This manual covers all DM Series Mobiles, unless otherwise specified. This manual provides sufficient information to
enable qualified service technicians to troubleshoot and repair DM
For details on radio operation or basic troubleshooting, refer to the applicable manuals available separately.
These servicing instructions are for use by qualified personnel only. To
reduce the risk of electric shock, do not perform any servicing other than
!
C a u t i o n
that contained in the Operating Instructions unless you are qualified to do
so. Refer all servicing to qualified service personnel.
Product Safety and RF Exposure Compliance
Before using this product, read the operating instructions for safe usage
contained in the Product Safety and RF Exposure booklet enclosed with
!
C a u t i o n
This radio is restricted to occupational use only to satisfy ICNIRP/FCC RF energy exposure
requirements. Before using this product, read the RF energy awareness information and operating
instructions in the Product Safety and RF Exposure booklet enclosed with your radio (Motorola
Publication part number 6866537D37) to ensure compliance with RF energy exposure limits.
For a list of Motorola-approved antennas, and other accessories, visit the following web site which
lists approved accessories: http://www.motorola.com/governmentandenterprise
your radio.
ATTENTION!
Series Mobiles to the component level.
Computer Software Copyrights
The Motorola products described in this manual may include copyrighted Motorola computer programs stored in
semiconductor memories or other media. Laws in the United States and other countries preserve for Motorola certain
exclusive rights for copyrighted computer programs, including, but not limited to, the exclusive right to copy or reproduce
in any form the copyrighted computer program. Accordingly, any copyrighted Motorola computer programs contained in
the Motorola products described in this manual may not be copied, reproduced, modified, reverse-engineered, or
distributed in any manner without the express written permission of Motorola. Furthermore, the purchase of Motorola
products shall not be deemed to grant either directly or by implication, estoppel, or otherwise, any license under the
copyrights, patents or patent applications of Motorola, except for the normal non-exclusive license to use that arises by
operation of law in the sale of a product.
Document Copyrights
No duplication or distribution of this document or any portion thereof shall take place without the express written
permission of Motorola. No part of this manual may be reproduced, distributed, or transmitted in any form or by any
means, electronic or mechanical, for any purpose without the express written permission of Motorola.
Disclaimer
The information in this document is carefully examined, and is believed to be entirely reliable. However, no responsibility is
assumed for inaccuracies. Furthermore, Motorola reserves the right to make changes to any products herein to improve
readability, function, or design. Motorola does not assume any liability arising out of the applications or use of any product
or circuit described herein; nor does it cover any license under its patent rights nor the rights of others.
Trademarks
MOTOROLA and the Stylized M logo are registered in the U.S. Patent & Trademark Office. All other product or service
names are the property of their respective owners.
The following major changes have been implemented in this manual since the previous edition:
EditionDescriptionDate
6866575D40-AInitial editionJune 2007
i
6866575D40-BAdded VHF Low Power Band Information. Added issue
C boards to all bands.
Nov. 2007
Page 4
ii
Notes
Page 5
DM 3400/DM 3401/
DM 3600/DM 3601
Mobile Radios
Detailed Service Manual
Contents
Chapter 1Service Maintainability
Chapter 2Control Head Service Information
Chapter 3Controller Service Information
Chapter 4GPS Service Information
Chapter 5UHF1 Low Power Service Information
Chapter 6UHF1 High Power Service Information
Chapter 7VHF Low Power Service Information
Chapter 8VHF High Power Service Information
Appendix AEMEA Regional Warranty, Service and
Technical Support
Glossary
November, 2007
Page 6
Notes
Page 7
M
DM 3400/DM 3401/
DM 3600/DM 3601
Mobile Radios
Chapter 1
Service Maintainability
Issue: November, 2007
Page 8
Computer Software Copyrights
The Motorola products described in this manual may include copyrighted Motorola computer programs stored
in semiconductor memories or other media. Laws in the United States and other countries preserve for
Motorola certain exclusive rights for copyrighted computer programs, including, but not limited to, the
exclusive right to copy or reproduce in any form the copyrighted computer program. Accordingly, any
copyrighted Motorola computer programs contained in the Motorola products described in this manual may
not be copied, reproduced, modified, reverse-engineered, or distributed in any manner without the express
written permission of Motorola. Furthermore, the purchase of Motorola products shall not be deemed to grant
either directly or by implication, estoppel, or otherwise, any license under the copyrights, patents or patent
applications of Motorola, except for the normal non-exclusive license to use that arises by operation of law in
the sale of a product.
Page 9
Chapter 1 - Service Maintainability
Table of Contents
Section 1Introduction
1.0Notations Used in This Manual............................................................................1-1
Throughout the text in this publication, you will notice the use of note and caution notations. These
notations are used to emphasize that safety hazards exist, and due care must be taken and
observed.
NOTE: An operational procedure, practice, or condition that is essential to emphasize.
1-1
!
C a u t i o n
CAUTION indicates a potentially hazardous situation which, if
not avoided, might
2.0Radio Description
The DM series radios are available in the following frequency ranges and power levels.
Table 1-1 Radio Frequency Ranges and Power Levels
Freq. BandBandwidthPower Level
VHF136–174 MHz1-25 Watts
UHF B1 403–470 MHz 1-25 Watts
These digital radios are among the most sophisticated two-way radios available. They have a
robust design for radio users who need high performance, quality, and reliability in their daily
communications. This architecture provides the capability of supporting a multitude of legacy and
advanced features resulting in a more cost-effective two-way radio communications solution.
result in equipment damage.
25-45 Watts
25-40 Watts
Page 12
1-2Radio Description
Notes
Page 13
Section 2
MAINTENANCE
1.0Introduction
This chapter provides details about the following
•Preventive maintenance (inspection and cleaning).
•Safe handling of CMOS and LDMOS devices.
•Repair procedures and techniques.
2.0Preventive Maintenance
Periodic visual inspection and cleaning is recommended.
2.1Inspection
2-1
Check that the external surfaces of the radio are clean, and that all external controls and switches
are functional. It is not recommended to inspect the interior electronic circuitry.
2.2Cleaning Procedures
The following procedures describe the recommended cleaning agents and the methods to be used
when cleaning the external and internal surfaces of the radio. External surfaces include the control
head and housing assembly. These surfaces should be cleaned whenever a periodic visual
inspection reveals the presence of smudges, grease, and/or grime.
NOTE: Internal surfaces should be cleaned only when the radio is disassembled for service or repair.
The only recommended agent for cleaning the external radio surfaces is a 0.5% solution of a mild
dishwashing detergent in water. The only factory recommended liquid for cleaning the printed circuit
boards and their components is isopropyl alcohol (100% by volume).
The effects of certain chemicals and their vapors can have harmful results on
!
C a u t i o n
certain plastics. Avoid using aerosol sprays, tuner cleaners and other
chemicals.
Page 14
2-2Preventive Maintenance
Cleaning External Plastic Surfaces
Apply the 0.5% detergent-water solution sparingly with a stiff, non-metallic, short-bristled brush to
work all loose dirt away from the radio. Use a soft, absorbent, lintless cloth or tissue to remove the
solution and dry the radio. Make sure that no water remains entrapped near the connectors, cracks,
or crevices.
Cleaning Internal Circuit Boards and Components
Isopropyl alcohol (100%) may be applied with a stiff, non-metallic, short-bristled brush to dislodge
embedded or caked materials located in hard-to-reach areas. The brush stroke should direct the
dislodged material out and away from the inside of the radio. Make sure that controls or tunable
components are not soaked with alcohol. Do not use high-pressure air to hasten the drying process
since this could cause the liquid to collect in unwanted places. Once the cleaning process is
complete, use a soft, absorbent, lintless cloth to dry the area. Do not brush or apply any isopropyl
alcohol to the frame, control head and housing assembly.
NOTE: Always use a fresh supply of alcohol and a clean container to prevent contamination by
dissolved material (from previous usage).
2.1Safe Handling of CMOS and LDMOS Devices
Complementary metal-oxide semiconductor (CMOS) devices are used in this family of radios, and
are susceptible to damage by electrostatic or high voltage charges. Damage can be latent, resulting
in failures occurring weeks or months later. Therefore, special precautions must be taken to prevent
device damage during disassembly, troubleshooting, and repair.
Handling precautions are mandatory for CMOS circuits and are especially important in low humidity
conditions.
Page 15
Preventive Maintenance2-3
DO NOT attempt to disassemble the radio without first referring to the following CAUTION
statement.
This radio contains static-sensitive devices. Do not open the radio unless you are
properly grounded. Take the following precautions when working on this unit:
!
C a u t i o n
• Store and transport all CMOS devices in conductive material so that
all exposed leads are shorted together. Do not insert CMOS devices
into conventional plastic “snow” trays used for storage and
transportation of other semiconductor devices.
• Ground the working surface of the service bench to protect the
CMOS device. We recommend using a wrist strap, two ground
cords, a table mat, and a floor mat.
• Wear a conductive wrist strap in series with a 100k resistor to
ground. (Replacement wrist straps that connect to the bench top
covering are Motorola part number 4280385A59).
• Do not wear nylon clothing while handling CMOS devices.
• Do not insert or remove CMOS devices with power applied. Check
all power supplies used for testing CMOS devices to be certain that
there are no voltage transients present.
• When straightening CMOS pins, provide ground straps for the
apparatus used.
• When soldering, use a grounded soldering iron.
• If at all possible, handle CMOS devices by the package and not by
the leads. Prior to touching the unit, touch an electrical ground to
remove any static charge that you may have accumulated. The
package and substrate may be electrically common. If so, the
reaction of a discharge to the case would cause the same damage
as touching the leads.
Page 16
2-4Preventive Maintenance
2.2Repair Procedures and Techniques — General
NOTE
Environmentally Preferred Products (EPP) (refer to the marking on the printed circuit
boards — examples shown below) were developed and assembled using environmentally preferred components and solder assembly techniques to comply with the European Union’s Restriction of Hazardous Substances (ROHS) Directive 2002/95/EC
and Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC. To
maintain product compliance and reliability, use only the Motorola specified parts in this
manual.
Any rework or repair on Environmentally Preferred Products must be done using the appropriate
lead-free solder wire and lead-free solder paste as stated in the following table:
When damaged parts are replaced, identical parts should be used. If the identical replacement part
is not locally available, check the parts list for the proper Motorola part number and order the part
from the nearest Motorola Radio Products and Solutions Organization listed in Appendix Aof this
manual.
Rigid Circuit Boards
The family of radios uses bonded, multi-layer, printed circuit boards. Since the inner layers are not
accessible, some special considerations are required when soldering and unsoldering components.
The printed through holes may interconnect multiple layers of the printed circuit. Therefore, exercise
care to avoid pulling the plated circuit out of the hole.
When soldering near a connector:
•Avoid accidentally getting solder in the connector.
•Be careful not to form solder bridges between the connector pins.
•Examine your work closely for shorts due to solder bridges.
Page 17
Preventive Maintenance2-5
Chip Components
Use the RLN4062 Hot-Air Repair Station for chip component replacement. Adjust the temperature
control to 370°C (700°F), and adjust the airflow to a minimum setting. Airflow can vary due to
component density.
•To remove a chip component:
1.Use a hot-air hand piece and position the nozzle of the hand piece approximately 0.3 cm
(1/8") above the component to be removed.
2.Begin applying the hot air. Once the solder reflows, remove the component using a pair of
tweezers.
3.Using a solder wick and a soldering iron or a power desoldering station, remove the excess
solder from the pads.
•To replace a chip component using a soldering iron:
1.Select the appropriate micro-tipped soldering iron and apply fresh solder to one of the solder
pads.
2.Using a pair of tweezers, position the new chip component in place while heating the fresh
solder.
3.Once solder wicks onto the new component, remove the heat from the solder.
4.Heat the remaining pad with the soldering iron and apply solder until it wicks to the compo-
nent. If necessary, touch up the first side. All solder joints should be smooth and shiny.
•To replace a chip component using hot air:
1.Use the hot-air hand piece and reflow the solder on the solder pads to smooth it.
2.Apply a drop of solder paste flux to each pad.
3.Using a pair of tweezers, position the new component in place.
4.Position the hot-air hand piece approximately 0.3 cm (1/8”) above the component and begin
applying heat.
5.Once the solder wicks to the component, remove the heat and inspect the repair. All joints
should be smooth and shiny.
Page 18
2-6Preventive Maintenance
Shields
Removing and replacing shields is recommended to be done with an Air Blower,
BOSCH GHG 600-3 or equivalent. The temperature should be set to approximately 400°C (752°F).
•To remove the shield:
1.Place the circuit board in the circuit board holder.
2.Add solder paste flux around the base of the shield.
3.Position the heat-focus head onto the shield.
4.Turn on the heater and wait until the shield lifts off the circuit board.
5.Once the shield is off, turn off the heat, and grab the part with a pair of tweezers.
6.Remove the circuit board from the circuit board holder.
•To replace the shield:
1.Add solder to the shield if necessary, using a micro-tipped soldering iron.
2.Next, rub the soldering iron tip along the edge of the shield to smooth out any excess solder.
Use solder wick and a soldering iron to remove excess solder from the solder pads on the
circuit board.
3.Place the circuit board back in the circuit board holder.
4.Place the shield on the circuit board using a pair of tweezers.
5.Position the heat-focus head over the shield.
6.Turn on the heater and wait for the solder to reflow.
7.Once complete, turn off the heat, raise the heat-focus head and wait approximately one
minute for the part to cool.
8.Remove the circuit board and inspect the repair. No cleaning should be necessary.
Page 19
Section 3
TEST EQUIPMENT AND SERVICE AIDS
1.0Recommended Test Equipment
The list of equipment contained in Table 3-1 includes most of the standard test equipment required
for servicing Motorola mobile radios.
Table 3-1 Recommended Test Equipment
EquipmentCharacteristicExampleApplication
3-1
Service MonitorCan be used as a
substitute for items
marked with an asterisk
(*)
Digital RMS
Multimeter*
RF Signal
Generator*
Oscilloscope*2 Channel
Power Meter and
Sensor*
RF Millivolt Meter100 mV to 3 V RF
100 µV to 300 V
5 Hz to 1 MHz
10 Meg Ohm Impedance
100 MHz to 1 GHz
-130 dBm to +10 dBM
FM Modulation 0 kHz to
10 kHz
50 MHz Bandwidth
5 mV/div to 20 V/div
5% Accuracy
100 MHz to 500 MHz
50 Watts
10 kHz to 1 GHz
Aeroflex 2975
(www.aeroflex.com), Motorola
R2670, or equivalent.
Fluke 179 or equivalent
(www.fluke.com)
Agilent N5181A
(www.agilent.com), Ramsey
RSG1000B
(www.ramseyelectronics.com),
or equivalent
Leader LS8050
(www.leaderusa.com), Tektronix
TDS1001b
(www.tektronix.com), or
equivalent
Bird 43 Thruline Watt Meter
(www.bird-electronic.com) or
equivalent
Boonton 92EA
(www.boonton.com) or
equivalent
Frequency/deviation meter and
signal generator for wide-range
troubleshooting and alignment
AC/DC voltage and current
measurements. Audio voltage
measurements.
Receiver measurements
Waveform measurements
Transmitter power output
measurements
RF level measurements
Power Supply0 V to 32 V
0 A to 20 A
B&K Precision 1790
(www.bkprecision.com) or
equivalent
Voltage supply
Page 20
3-2Service Aids
2.0Service Aids
Table 3-2 lists the service aids recommended for working on the radio. While all of these items are
available from Motorola, most are standard workshop equipment items, and any equivalent item
capable of the same performance may be substituted for the item listed.
Table 3-2 Service Aids
Motorola
Part Number
RLN4460_Test SetEnables connection to audio/accessory jack. Allows
PMKN4010_Mobile & Repeater Rear
Programming Cable
PMKN4016_Mobile & Repeater Rear
Accessory Programming and
Test Cable
PMKN4018_Mobile & Repeater Rear
Accessory Connector Universal
Cable
HKN6184_Mobile Front Programming CableConnects the radio’s front connector to a USB port for
HLN8027_Mini UHF to BNC AdaptorAdapts radio antenna port to BNC cabling of test
HPN4007_Power SupplyProvides the radio with power when bench testing.
HPN4008_Power Supply 1-25WProvides the radio with power when bench testing.
8180384Y11Housing EliminatorTest Fixture used to bench test the radio PCB.
DescriptionApplication
switching for radio testing.
Connects the radio’s rear connector to a USB port for
radio programming and data applications.
Connects the radio’s rear connector to a USB port for
radio programming, data applications, testing and
alignment.
Connects the radio’s rear connector to accessory
devices such as desk sets. Cable contains all 26 wires
and is unterminated at the user end.
radio programming and data applications.
equipment.
6686119B01Removal ToolAssists in the removal of radio control head.
3.0Programming Cables
Figure 3-1 Mobile Front Programming Cable HKN6184_
Page 21
Programming Cables3-3
Figure 3-2 Mobile & Repeater Rear Programming Cable PMKN4010_
DB 25 CONNECTOR
1
14
915 15
CABLE
USB CONNECTOR
13
4
25
1455 24
CABLE
TO MOBILE RADIO
REAR ACCESSORY
CONNECTOR
25
26
1
VIEWED FROM
FRONT (PIN END)
OF CONNECTOR
2
WIRE DIAGRAM
REAR ACCESSORY
CONNECTOR
DESCRIPTION
PIN No.
VCC (5v)
3
2 2
DATA -
DATA +
1
4
9
11
17
16 16
10
GND
SPEAKER -
EXT MIC
DIGI IN 1
(EXT PTT)
GND
SPEAKER +
USB DB25P
1
3
7
17
20
1
Figure 3-3 Mobile & Repeater Rear Accessory Programming and Test Cable PMKN4016_
Page 22
3-4Programming Cables
Notes
Page 23
Section 4
POWER-UP SELF-TEST
NOTE: This section is for reference only. If at any time one of the error codes is present, the radio
should be returned to a qualified Motorola Service Center.
1.0Power-Up Error Codes (Display Model only)
Upon powering up, the radio performs certain tests to determine if its basic electronics and software
are in working order. Any error detected has an associated error code that is presented on the radio
display. These error codes are intended to be used by a service technician when the radio
generates the Self Test Fail Tone. If these tests are successfully completed, the radio will generate
th e S el f Tes t To ne .
There are two classes of detectable errors, fatal and non-fatal. If it is considered as a fatal error, then
the normal radio operation will be inhibited. Fatal errors include hardware errors detected by the
microprocessor and certain memory errors. These memory errors include incorrect ROM checksum,
incorrect RAM checksum, and incorrect checksums of codeplug (Persistent Storage) blocks that
contain operating parameters. If the codeplug block operating parameters are corrupted, operation
of the unit on the proper frequency, system, and group are in question. Attempts to use this
information could provide the user with a false sense of security that others are receiving his
messages. Corrupted codeplug blocks of call IDs, or their associated aliases are considered nonfatal errors. While the user may be inconvenienced, normal communication is still possible.
4-1
Table 4-1 Power-Up Self Check Error Codes
Error CodeDescriptionError TypeCorrective Action
ERROR 01/02FLASH ROM Codeplug
Checksum
ERROR 01/22Tuning Codeplug
Checksum
FAIL 01/81
FAIL 02/81
FAIL 01/82DSP RAM1 Test FailureFATAL•Turn radio off and then on
FAIL 01/84DSP RAM2 Test FailureFATAL•Turn radio off and then on.
Host or DSO firmware
checksum
NON-FATAL•Reflash the entire codeplug.
NON-FATAL•Reflash tuning codeplug.
•Retune the radio using Global Tuner
FATAL•Reflash the firmware.
•Manually put radio into bootstrap
mode, and reflash firmware
•Replace radio by sending to the
nearest Motorola Depot
•Manually put radio into bootstrap
mode, and reflash firmware.
•Replace radio by sending to the
nearest Motorola Depot.
Page 24
4-2Operational Error Codes
Table 4-1 Power-Up Self Check Error Codes
Error CodeDescriptionError TypeCorrective Action
FAIL 01/88External SDRAM FailureFATAL•Turn radio off, and then on.
•Manually put radio into bootstrap
mode, and reflash firmware.
•Replace the main board.
FAIL 01/90General Hardware Test
Failure
FAIL 01/A0Abacus IC Test Failure or
Wrong IC Version
FAIL 01/A2Tuning Codeplug
Checksum
FAIL 01/C0DSP ROM Test FailureFATAL•Turn radio off, and then on. Manually
FATAL•Turn radio off, and then on.
•Manually put radio into bootstrap
mode, and reflash firmware.
•Replace radio by sending to the
nearest Motorola Depot.
FATAL•Reflash tuning codeplug
•Retune the radio using Global Tuner.
FATAL•Reflash tuning codeplug.
•Retune the radio using Global Tuner.
put radio into bootstrap mode, and
reflash firmware.
•Replace radio by sending to the
nearest Motorola Depot.
NOTE: A non-display radio emits only the Self Test Fail Tone if it fails the self test.
2.0Operational Error Codes
During radio operation, the radio performs dynamic tests to determine if the radio is working
properly. Problems detected during these tests are presented as error codes on the radio's display.
The presence of an error code should prompt a user that a problem exists and that a Motorola
Authorized MOTOTRBO dealer should be contacted. Use Table 4-2 to aid in understanding
particular operational error codes.
Table 4-2 Operational Error Codes
Error CodeDescriptionError TypeCorrective Action
ERROR 001Synthesizer Out of Lock
Radio band mismatch
ERROR 002Personality Checksum or
System Block Error
NON-FATAL•Reflash the tuning codeplug.
•Reflash the entire codeplug.
•Replace radio by sending to the
nearest Motorola Depot.
NON-FATAL•Reflash the entire codeplug.
Page 25
M
DM 3400/DM 3401/
DM 3600/DM 3601
Mobile Radios
Chapter 2
Control Head
Service Information
Issue: November, 2007
Page 26
Computer Software Copyrights
The Motorola products described in this manual may include copyrighted Motorola computer programs stored
in semiconductor memories or other media. Laws in the United States and other countries preserve for
Motorola certain exclusive rights for copyrighted computer programs, including, but not limited to, the
exclusive right to copy or reproduce in any form the copyrighted computer program. Accordingly, any
copyrighted Motorola computer programs contained in the Motorola products described in this manual may
not be copied, reproduced, modified, reverse-engineered, or distributed in any manner without the express
written permission of Motorola. Furthermore, the purchase of Motorola products shall not be deemed to grant
either directly or by implication, estoppel, or otherwise, any license under the copyrights, patents or patent
applications of Motorola, except for the normal non-exclusive license to use that arises by operation of law in
the sale of a product.
Section 4Control Head PCBs / Schematics / Parts lists
1.0Allocation of Schematics and Circuit Boards .......................................................4-1
2.0Numeric Display Control Head - PCB 8471214H02 / Schematics.......................4-3
Numeric Display Control Head - PCB 8471214H02 ...............................................4-3
Numeric Display Control Head Schematic Diagram...............................................4-4
3.0Numeric Display Control Head Parts List ............................................................4-5
4.0Display Control Head - PCB 8415026C08 / Schematics .....................................4-6
Display Control Head - PCB 8415026C08 .............................................................4-6
Display Control Head Schematic Diagram .............................................................4-7
5.0Display Control Head Parts List ..........................................................................4-8
Page 28
ii
Notes
Page 29
Section 1
OVERVIEW
1.0Numeric Display Model
The Control Head contains the internal speaker, the On/Off/Volume knob, the microphone
connector, several buttons to operate the radio and several indicator Light Emitting Diodes (LED) to
inform the user about the radio status and channel. The switches and indicators on the Control Head
are directly controlled by the processor in the radio.
1-1
Page 30
1-2Display Model
2.0Display Model
The Control Head contains the internal speaker, the On/Off/Volume knob, the microphone
connector, several buttons to operate the radio, several indicator Light Emitting Diodes (LED) to
inform the user about the radio status, and a Liquid Crystal Display (LCD) for alpha - numerical
information e.g. channel number or call address name. The switches, indicators, and LCD on the
Control Head are directly controlled by the processor in the radio.
Page 31
Section 2
THEORY OF OPERATION
1.0Introduction
There are two different Control Heads supported by the DMseries radios, a Display Control Head
and a Numeric Display Control Head. Information concerning the radio’s Control Head interface can
be found in section 1.8 of Controller Service Information section.
1.1Numeric Display Control Head
The Numeric Display Control Head contains the internal speaker, the on/off switch, the volume
knob, the microphone connector, several buttons to operate the radio, a two-digit LED channel
indicator display and several indicator LEDs to inform the user about the radio status. The OMAP
processor (U1000) inside the radio controls the LEDs and the LED channel display via a serial data
bus.
2-1
1.1.1Power Supply
The power supply to the control head is taken from the radio’s 9V3 voltage via connector J6001, pin
30. The voltage 9V3 is at 9.3 V and is used for the LEDs, the backlight LEDs, and is regulated to
3.3V by U6000. The regulated 3.3 V supplies power to the logic level shifters, shift registers and
BCD decoders.
1.1.2Serial Peripheral Interface (SPI)
The radio communicates with the control head via its SPI bus. Four lines are connected to the shift
register U6002: CLOCK (J6001, pin 24), DATA (J6001, pin 25), LED_CS (J6001, pin 23) and
RESET (J6001, pin 28). CLOCK, DATA and RESET are also connected to the shift register U6005.
Additionally, one more line is connected from the radio to U6005: DISPLAY_CS (J6001, pin 26). All
5 lines are level translated from 1.8 V to 3.3 V through U6003.
The radio sends data to the shift registers by first asserting the appropriate chip select and the data
is loaded to the appropriate registers. Data is latched into the shift registers when the CS transitions
from low to high.
1.1.3Switches
This control head supports two switches to control channel up/down, and two programmable
switches P1 and P2. The switches are connected to the OMAP inside the radio via a 4 row by 3
column scanning matrix with only four used positions. Each of the 3 column output lines is toggled
high in sequence and the 4 row input lines are monitored to detect if a button has been pressed. The
OMAP processor then decodes which switch was pressed using the appropriate column and row
stimulus and response information.
The momentary on-off switch is a dedicated function which is not part of the keypad matrix network.
ON_OFF_SW signal is connected to the host radio via J6001, pin 22. When this signal is
momentary grounded, on/off switch on the host radio is triggered.
Page 32
2-2Introduction
1.1.4Dual Seven-Segment Display
The two digit numerical display is controlled by the shift register U6005, BCD decoder/drivers U6006
and U6007. The higher 4 bits of U6005 output are decoded by U6007 and display the left digit. The
lower 4 bits of U6005 output are decoded by U6006 and display the right digit. U6002 pin 4 controls
on and off for the display.
1.1.5Status LEDs and Backlight Circuit
All indicator LEDs (red, yellow and green) and icon LEDs are driven by current sources. LEDs on or
off are set by the radio sending a data message to the control head shift register U6002 via the SPI
bus. The control head shift register U6002 determines the LED state from the received data and
switches the LEDs on or off via Q6004, Q6005, Q6007, Q6011, and Q6012.
Backlighting for the keys is provided by 5 LEDs driven from a constant current circuit Q6014. The
backlighting can be either on or off controlled by the U6002 (pins 3 and 4).
1.1.6Mobile Microphone Port (MMP) Interface
The Mobile Microphone Port (MMP) is a newly defined Motorola Accessory Port that contains audio,
digital I/O, serial interfaces, and accessory supply lines; and is similar in function to Motorola’s
legacy microphone connectors. The multiplexing of these functions is handled by circuitry internal to
the radio. The function of each pin is listed in Table 2-1.
Table 2-1 Mobile Microphone Port Functions
MMP Pin
Number
MMP Pin NameFunction
1ACC_IDAccessory Identifier
2GPIO_3 / PTTGeneral Purpose I/O or PTT
3SpkrHandset Audio
4GPIO_2 / D-USB D-
5GND (Ground)Ground
6Opt_5V / Vbus5 Volt Supply
7Mic+Mic Input
8GPIO_1 / D+USB D+
9GPIO_4 / HookGeneral Purpose I/O or Hook
10GPIO_0 / PwrOnGeneral Purpose I/O or Power On
Detect
The MMP includes 2 serial interfaces: an USB port and an ACC_ID interface. The USB port can be
used as either a device (radio is device) or as a host (radio is host). When configured as a device,
the radio can be programmed or tuned using MOTOTRBO CPS or Tuner software. When configured
as a host, various smart accessories can be used with the radio. See section 1.7 of Controller
Service Information sectionfor more information on the USB interface.
Page 33
Introduction2-3
The ACC_ID interface is used by accessories to provide the radio with information needed to
configure the interface for that accessory. See section 1.6 of Controller Service Information section
for more information on the ACC_ID interface.
Note: The USB ports are designed to support Motorola accessories and approved applications only
and will not support third party “Plug-n-Play” USB devices.
1.1.7Speaker
The control head contains a speaker for the receive audio. The receive audio signal from the audio
PA (located inside the radio) is fed via connector J6001, pins 10 and 11 to the speaker connector.
The speaker is connected to the speaker connector P6004. The control head speaker can be
disconnected if an external speaker, connected on the MAP is used. For more details on the audio
PA and audio routing see section 1.11 of Controller Service Information section.
1.1.8Electrostatic Transient Protection
Electrostatic transient protection is provided for the sensitive components in the control head by
diodes VR6001, VR6002, VR6020, VR6042 VR6043, and VR6045. The diodes limit any transient
voltages to tolerable levels. The associated capacitors provide Radio Frequency Interference (RFI)
protection.
1.1.9Volume Encoder
The volume control is facilitated by the digital encoder S6010. Pins 1 and 3 of S6010 are connected
to the radio OMAP processor (U1000) via J6001, pins 13 and 14. There are active pull-ups internal
to the OMAP. When S6010 is rotated, active low pulses are generated on both pins in off-phase
pattern. The phase of the two signals determines the direction of the rotation. The number of the
pulses determines the magnitude of the rotation.
1.2Display Control Head
The Display Control Head contains the internal speaker, the on/off switch, the volume knob, the
microphone connector, several switches to operate the radio, several indicator LEDs to inform the
user about the radio status, and a dot matrix liquid crystal display (LCD) for alphanumerical
information. The OMAP processor (U1000) inside the radio controls the LEDs and the LCD via serial
data bus.
1.2.1Power Supply
The power supply to the control head is taken from the radio’s 9V3 voltage via connector J6001, pin
30. The voltage 9V3 is at 9.3 V and is used for the LEDs, the backlight LEDs, and is regulated to
2.2 V by U6000. The regulated 2.2 V supplies power to the logic level shifters, shift registers and
LCD module.
Page 34
2-4Introduction
1.2.2Serial Peripheral Interface (SPI)
The radio communicates with the control head via its SPI bus. Three lines are connected to the shift
register U6002: CLOCK (J6001, pin 24), DATA (J6001, pin 25), and LED_CS (J6001, pin 23).
CLOCK and DATA are also connected to the LCD module via J6000. Additionally, three more lines
are connected from the radio to LCD module: DISPLAY_CS (J6001, pin 26), D/C (J6001, pin 27)
and RESET (J6001, pin 28). All 6 lines are level translated from 1.8 V to 2.2 V through U6003.
The radio sends data to the shift registers by first asserting the appropriate chip select and the data
is loaded to the appropriate registers. Data is latched into the shift registers when the CS transitions
from low to high.
1.2.3Switches
This control head supports 11 switches to control channel up/down, menu navigation, and four
programmable switches P1 through P4. The switches are connected to the OMAP inside the radio
via a 4 row by 3 column scanning matrix with only four used positions. Each of the 3 column output
lines is toggled high in sequence and the 4 row input lines are monitored to detect if a button has
been pressed. The OMAP processor then decodes which switch was pressed using the appropriate
column and row stimulus and response information.
The momentary on-off switch is a dedicated function which is not part of the keypad matrix network.
ON_OFF_SW signal is connected to the host radio via J6001, pin 22. When this signal is
momentary grounded, on/off switch on the host radio is triggered.
1.2.4LCD Display
The 132x34 full dot matrix LCD is controlled by the LCD controller/driver chip on the LCD module.
The radio communicates with the LCD module via CLOCK (J6001, pin 24), DATA (J6001, pin 25),
DISPLAY_CS (J6001, pin 26), D/C (J6001, pin 27) and RESET (J6001, pin 28). The radio sends
data to the LCD by first asserting chip select low and the data is loaded to the appropriate registers.
Data is latched into the shift registers when the CS transitions from low to high. U6003 on the control
head board is used to provide level shifting from the 1.8 V radio logic level to the 2.2 V LCD logic
level.
1.2.5Status LEDs and Backlight Circuit
All indicator LEDs (red, yellow and green) and icon LEDs are driven by current sources. LEDs on or
off are set by the radio sending a data message to the control head shift register U6002 via the SPI
bus. The control head shift register U6002 determines the LED state from the received data and
switches the LEDs on or off via Q6004, Q6005, and Q6007.
Backlighting for the keys is provided by 18 LEDs driven from a constant current circuit Q6014. The
backlighting can be either on or off controlled by a constant current circuit (Q6008, U6001 and
associated parts). There are 4 levels of backlight: off, low, medium and high, which are controlled by
two outputs from the shift register (U6002, pins 3 and 4). The current is controlled by transistor
Q6008. The Op Amp U6001 monitors the current by measuring the voltage drop across R6019,
R6020 and adjusting the bias of Q6008 to achieve the required level as set by the combined shift
register outputs. The total current is distributed among all the LEDs. Resistors R6037,R6040, R6041
and R6042 provide compensation to the component variation between LEDs. They ensure the even
brightness on the control head.
Page 35
Introduction2-5
1.2.6Mobile Microphone Port (MMP) Interface
The Mobile Microphone Port (MMP) is a newly defined Motorola accessory port that contains audio,
digital I/O, serial interfaces, and accessory supply lines; and is similar in function to Motorola’s
legacy microphone connectors. The multiplexing of these functions is handled by circuitry internal to
the radio. The function of each pin is listed in Table 2-2
Table 2-2 Mobile Microphone Port Functions
.
MMP Pin
Number
1ACC_IDAccessory Identifier
2GPIO_3 / PTTGeneral Purpose I/O or PTT
3SpkrHandset Audio
4GPIO_2 / D-USB D-
5GND (Ground)Ground
6Opt_5V / Vbus5 Volt Supply
7Mic+Mic Input
8GPIO_1 / D+USB D+
9GPIO_4 / HookGeneral Purpose I/O or Hook
10GPIO_0 / PwrOnGeneral Purpose I/O or Power On
The MMP includes 2 serial interfaces: an USB port and an ACC_ID interface. The USB port can be
used as either a device (radio is device) or as a host (radio is host). When configured as a device,
the radio can be programmed or tuned using MOTOTRBO CPS or Tuner software. When configured
as a host, various smart accessories can be used with the radio. See section 1.7 of Controller
Service Information section for more information on the USB interface.
MMP Pin NameFunction
Detect
The ACC_ID interface is used by accessories to provide the radio with information needed to
configure the interface for that accessory. See section 1.6 of Controller Service Information section
for more information on the ACC_ID interface.
Note: The USB ports are designed to support Motorola accessories and approved applications only
and will not support third party “Plug-n-Play” USB devices.
1.2.7Speaker
The control head contains a speaker for the receive audio. The receive audio signal from the audio
PA (located inside the radio) is fed via connector J6001, pins 10 and 11 to the speaker connector.
The speaker is connected to the speaker connector P6004. The control head speaker can be
disconnected if an external speaker, connected on the MAP, is used. For more details on the audio
PA and audio routing see section 1.11 of Controller Service Information section.
Page 36
2-6Introduction
1.2.8Electrostatic Transient Protection
Electrostatic transient protection is provided for the sensitive components in the control head by
diodes VR6001, VR6002, VR6020, VR6042 VR6043, and VR6045. The diodes limit any transient
voltages to tolerable levels. The associated capacitors provide Radio Frequency Interference (RFI)
protection.
1.2.9Volume Encoder
The volume control is facilitated by the digital encoder S6010. Pins 1 and 3 of S6010 are connected
to the radio OMAP processor (U1000) via J6001, pins 13 and 14. There are active pull-ups internal
to the OMAP. When S6010 is rotated, active low pulses are generated on both pins in off-phase
pattern. The phase of the two signals determines the direction of the rotation. The number of the
pulses determines the magnitude of the rotation.
Page 37
3-1
Section 3
TROUBLESHOOTING CHARTS
1.0Numeric Display Model Control Head Troubleshooting Flow Chart
1.1On/Off
Radio cannot be switched on via ON/OFF button.
No
J6001 Pin 22
= 2.45V?
Yes
Press and hold ON/OFF button
J6001 Pin 22
=0V?
Yes
Check control head with a
known functional brick.
No
Check flex cable, and
brick power supply and
ignition sense
connection.
Check and clean gold
contacts on S6010.
Page 38
3-2Display Model Control Head Troubleshooting Flow Chart
J6001 Pin 22
= 2.45V?
2.0Display Model Control Head Troubleshooting Flow Chart
2.1On/Off
Radio cannot be switched on via ON/OFF button.
No
Yes
Press and hold ON/OFF button.
J6001 Pin 22
=0V?
Yes
Check control head with a
known functional brick.
Check flex cable, and
brick power supply and
ignition sense
connection.
Check and clean gold
contacts on S6010.
Page 39
Display Model Control Head Troubleshooting Flow Chart3-3
2.2Display
Power Up Alert Tone is OK but display shows nothing.
LCD flex cable
inserted and locked
down in J6000?
Yes
Replace control head with a
known functional unit.
Display
working?
Update radio with latest
firmware and codeplugs.
No
Yes
No
Re- insert and lock down
LCD flex cable.
Replace LCD module on
original control head.
Page 40
3-4Display Model Control Head Troubleshooting Flow Chart
2.3Backlight
Power Up Alert Tone is OK but Backlight could not be
turned on via menu or programmable key (P4).
Are U6002
Pin 3, 4
Toggling?
Yes
Are R6036
Pin 1 or 2
Toggling?
Yes
Replace R6037, R6040 -42
and all backlight LEDs.
No
No
Check open or short on
U6002 and U6003.
Check open or short on
U6001 and Q6008.
Page 41
Section 4
CONTROL HEAD PCBS / SCHEMATICS / PARTS LISTS
1.0Allocation of Schematics and Circuit Boards
Table 4-1 Numeric Display Control Head Diagrams and Parts List
PCB :
Numeric Display Control Head
8471214H02 Main Board Top Side
8471214H02 Main Board Bottom Side
SCHEMATICS
Numeric Display Control Head Schematic DiagramPage 4-4
Parts List
8471214H02Page 4-5
Table 4-2 Display Control Head Diagrams and Parts List
PCB :
Display Control Head
8415026C08 Main Board Top Side
8415026C08 Main Board Bottom Side
SCHEMATICS
Display Control Head Schematic DiagramPage 4-7
Parts List
8415026C08Page 4-8
Page 4-3
Page 4-3
Page 4-6
Page 4-6
4-1
Page 42
4-2Allocation of Schematics and Circuit Boards
Notes
Page 43
Numeric Display Control Head - PCB 8471214H02 / Schematics4-3
2.0Numeric Display Control Head - PCB 8471214H02 / Schematics
D6023
D6022
D6021
3
1
S6000
D6008
1
1
1
G2
S6010
1
2
24
G1
J6010
2
13
D6053
1
D6052
1
D6051
1
12
D6011
D6005
S6009
1
1
S6012
Top Side View
2
3
5
6
J6003
7
9
84
10
1
S6006
D6004
U6007
R6002
16
9
C6008
7
C6067
C6005
C6102
R6062
R6063
R6057
R6058
R6059
R6060
R6061
U6003
R6003
14
8
U6000
R6086
C6074
C6073
R6001
R6008
R6013
R6005
R6065
VR6003
8
R6004
3
Q6014
2
R6070
R6075
16
9
C6050
VR6009
30
C6103
R6051
R6050
R6056
R6055
R6054
R6053
R6052
C6019
VR6004
C6018
1
U6006
C6017
C6015
C6016
VR6008
C6013
2
C6051
C6052
C6054
M6000
C6057
C6066
J6001
C6056
8
9
U6002
C6009
C6104
C6101
C6100
G2
2
P6004
G1
16
9
U6005
16
2
3
Q6010
R6068
1
2
8
1
C6091
C6088
C6087
C6090
C6086
R6067
R6066
R6084
R6081
R6080
R6085
R6083
3
Q6011
2
3
Q6012
C6081
C6083
C6080
C6085
C6082
1
8
R6006
R6007
R6039
C6055
C6053
1
C6012
S6002
C6014
1
C6065
D6010
C6010
R6071
2
2
R6011
R6073
R6033
R6026
R6032
R6072
C6072
R6025
VR6002
VR6045
VR6001
VR6040VR6042VR6043
VR6020
R6035
C6060
C6061
C6063
C6064
C6011
C6068
VR6000
3
Q6004
R6010
R6009
3
Q6005
2
3
Q6007
2
M6001
Bottom Side View
1
VR6005
VR6006 VR6007
2
M6002
1
Numeric Display Control Head - PCB 8471214H02
Page 44
4-4Numeric Display Control Head - PCB 8471214H02 / Schematics
D60054815809H04LED GREEN
D60084815809H04LED GREEN
D60104815809H04LED GREEN
D60114815809H04LED GREEN
D60214815809H04LED GREEN
D60224815809H03LED YELLOW
D60234815809H02LED RED
D60514815809H04LED GREEN
D60524815809H04LED GREEN
D60534815809H04LED GREEN
J60010915555H0130-PIN CONTROL HEAD
J60030964501H0210-PIN GCAI CONNECTOR
J60100916947H0124-PIN SOCKET
M60003915452H01GROUNDING SPRING
M60013915452H01GROUNDING SPRING
M60023915452H01GROUNDING SPRING
P60042815162H012-PIN SPEAKER
C60882113944A3668pF
C60892113944A3668pF
C60902113944A3668pF
C60912113944A3668pF
D60004815809H04LED GREEN
D60014815809H04LED GREEN
D60024815809H04LED GREEN
D60034815809H04LED GREEN
D60044815809H04LED GREEN
D60054815809H04LED GREEN
D60064815809H04LED GREEN
D60074815809H04LED GREEN
D60084815809H04LED GREEN
D60094815809H04LED GREEN
D60104815809H04LED GREEN
D60114815809H04LED GREEN
D60214815809H04LED GREEN
D60224815809H03LED YELLOW
D60234815809H02LED RED
J60000916769H0110-PIN FLEX CONNECTOR
J60010915555H0130-PIN CONTROL HEAD
J60030964501H0210-PIN GCAI CONNECTOR
M60003915452H01GROUNDING SPRING
M60013915452H01GROUNDING SPRING
M60023915452H01GROUNDING SPRING
P60042815162H012-PIN SPEAKER
U60035115502H01LOGIC TRANSLATOR
VR6000 NOT PLACED DIODE, 5.6V ZENER
VR6001 4813977A43DIODE, 5.6V ZENER
VR6002 4813977A43DIODE, 5.6V ZENER
VR6003 4813977A48DIODE, 20V ZENER
VR6004 NOT PLACED DIODE, 5.6V ZENER
VR6005 NOT PLACED DIODE, 5.6V ZENER
VR6006 NOT PLACED DIODE, 5.6V ZENER
VR6007 NOT PLACED DIODE, 5.6V ZENER
VR6008 NOT PLACED DIODE, 5.6V ZENER
VR6009 NOT PLACED DIODE, 5.6V ZENER
VR6020 4813977A43DIODE, 5.6V ZENER
VR6040 NOT PLACED DIODE, 5.6V ZENER
VR6042 4813977A43DIODE, 5.6V ZENER
VR6043 4813977A43DIODE, 5.6V ZENER
VR6045 4813977A43DIODE, 5.6V ZENER
Motorola
Part No.
Description
CONVERTER
Page 49
M
DM 3400/DM 3401/
DM 3600/DM 3601
Mobile Radios
Chapter 3
Controller
Service Information
Issue: November, 2007
Page 50
Computer Software Copyrights
The Motorola products described in this manual may include copyrighted Motorola computer programs stored
in semiconductor memories or other media. Laws in the United States and other countries preserve for
Motorola certain exclusive rights for copyrighted computer programs, but not limited to, the exclusive right to
copy or reproduce in any form, the copyrighted computer program. Accordingly, any copyrighted Motorola
computer programs contained in the Motorola products described in this manual may not be copied,
reproduced, modified, reverse-engineered, or distributed in any manner without the express written
permission of Motorola. Furthermore, the purchase of Motorola products shall not be deemed to grant either
directly or by implication, estoppel or otherwise, any license under the copyrights, patents or patent
applications of Motorola, except for the normal non-exclusive license to use that arises by operation of law in
the sale of a product.
Controller Audio and USB Schematic Diagram....................................................3-38
4.1Controller R4 Parts List ...............................................................................3-39
Page 53
Section 1
THEORY OF OPERATION
1.0Controller
The Controller section consists of 4 main ICs. These are the Texas Instrument OMAP1710 Host/
DSP Processor (U1000), Flash memory (U2000), SDRAM memory (U2001) and the MAKO Audio/
Power Management (U3200) chip.
Figure 1-1 shows how the Controller interfaces with the RF section, GPS, Control Head and
peripherals in DM series radio. The Controller, RF section, GPS, Control Head interface, Accessory
interface, and Option Board interface are placed on a single Transceiver board. The physical
interfaces between the Transceiver board and Option Board and between the Transceiver board
and Control Head are via flex type connectors. All of the user interfaces are located on the Control
Head.
Battery
5V_GPS
VBUS1,2
1.4V
TDA1519C
9.3V
Reg.
5V
Reg.
VBUS
Reg.
Audio
9.3V
Reg.
9.3V
Reg.
Curr.
Limit
PA
Audio PA
ON_OFF_CTRL
FETSW1
SW5
Core
Reg.
I2C
5V
Reg
V2_1.875V
V4_2.775V
V7_2.775V
EXT_SWB+
V2_1.875V
V3_1.35V
V4_2.775V
V7_2.775V
V10_3.3V
Audio Atten.
V6_2.9V
V8_5V
V9_3V
PA_SUPPLY
PA_Driver_Supply
9.3V_RF
5V_RF
Vdd
Supply
FET_ENX
Power
Management
SW2
(LDOs,Codec,USB,1-Wire,ADC,DAC)
LDOs
Audio Preamp
Voice Codec
USB1,2 TXCR
OPT_SELA
ON/OFF Logic
1-Wire
FE_TUNE PA_BIAS RAMP_DAC
DAC1 DAC2DAC3
MAKO
24.576 MHz
11 Channels
ADC
USB_RS232
Interfaces
32.768 KHz
TOMAHAWK_ABACUS
SPI
4-Wire SPI
Curr. Sense
V2_1.875V
1.4V
4-Wire SSI
SSI
32.768KHz
SPI
Batt. Sense
SPI_1
Peripheral_IO
Core
USB0
USB1
UART1
CLK
PLL
12 MHz
ISS XT
McBSP2
OMAP1710
(MPU & DSP)
GPIOs
SPI_2
RF Interface
ABACUS
SSIRFCNTRL
ISS XR
KEYPAD
I/F
GPIOs
MPUIOs
16.8MHz
GPIOs
UART3
MEM I/F
McBSP1
GPIO
GPIOs
McBSP3
1-1
5V_GPS
1.5V
2.8V
Reg.
Level
Shift
Curr.
Sense
Curr. Sense
I2C
I2C
Logic
CTRL
SiRF
IC
SDRAM
(64Mb: 4M x 16)
FLASH
(64Mb: 4M x 16)
4-Wire SSI
32.768KHz
GPS
VBUS2
ADS
Emerg/Ignition
USB2
Peripherals
DATA
Serial_Parallel IC
DC Supply
Rear Accessory (MAP)
EXT_SWB+
LCD Driver/LED
9.3V2.9V Reg.
ON/OFF Switch
VBUS1
GCAI MMP
Figure 1-1 Controller Block Diagram
Keypad
&Navigation
buttons
Volume
Encoder
Control Head
SSI
Dir. CTRL /
Repeater
Option Board
Buffer
SYNC
GPIOs
SYNC
SSI
Page 54
1-2Controller
1.1Radio Power Distribution
Figure 1-2 illustrates the controller DC power distribution throughout the transceiver board.
*RX VCO Buffer (Q0202)
*RX FE Amp (Q0402)
*RX FE AGC
*RX FE DAC Doubler (Q0403)
st
*RX 1
LO Amp (Q0405)
2.8V_RF_Reg
U6402
2.8V_Dig_Reg
U6406
1.5V_RTC_Reg
U6407
*GPS Logics Translator (U1005)
2
C Bus Translator (U3503)
*I
GPS
SiRF
Figure 1-2 Radio Power Distribution
Page 55
Controller1-3
Voltage regulation is provided to the controller, GPS and RF sections by the following devices:
•+9.3V_PA: U3005, U3006, and U3030
•+9.3V_CNTRL: U3040 and U3030
•+9.3V_SW: U3001
•+12.6V_Ext SWB+: U3003
•+1.5V GPS RTC: U6407
•+1.4V OMAP Core: U3201
•Supplies for the Controller section: U3200 (MAKO)
•Supplies for the RF and GPS sections: U0601, U0941,U3002,U3004,U6402, and U6406
The 9V3_PA regulator uses Op Amp U3030-1 as a controlling element. The regulated output
voltage is divided by R3039 and R3040 and compared with an accurate reference voltage (5.1V DC)
determined by VR3040. The Op Amp's output voltage at pin 1 varies the amount of conduction in
transistors Q3032, U3005 and U3006 as necessary to keep voltages equal on pins 2 and 3 of the
Op Amp. A characteristic of the Op Amp which allows the regulator to start up is the fact the output
is high when both inputs are low, which occurs momentarily at turn-on. Dual diode D3030 serves two
purposes. Diode D3030 is used to protect transistors U3005 and U3006 if the 9.3V_PA line is
grounded. When this happens Q3032's base can only be 0.7V DC and transistors U3005 and
U3006 will be turned off. Diode D3030 also provides temperature compensation of the regulated
output voltage. The 9V3_PA supply powers the low level and driver stages of the RF power
amplifier.
The MAKO and GPS regulators are powered by the 9V3_CNTRL supply. Op Amp U3030-2
functions as a controlling element for the 9V3_CNTRL regulator. The regulated output voltage is
divided by R3045 and R3046 and compared with the reference voltage determined by VR3040. The
Op Amp's output voltage at pin 7 varies the amount of conduction in transistors Q3040 and U3040
as necessary to keep equal voltages on pins 5 and 6 of the Op Amp. As is the case with the 9V3_PA
regulator, the Op Amp characteristic allows the regulator to start up when both Op Amp inputs are
momentarily low at turn-on. Dual diode D3040 serves two purposes. Diode D3040 is used to protect
transistor U3040 if the 9.3V_CNTRL line is grounded. When this happens Q3040's base can only be
0.7V DC and transistor U3040 will be turned off. Diode D3030 also provides temperature
compensation of the regulated output voltage.
Regulator U3001 generates the 9.3V required by most RF, power control, and audio circuits. Input
and output capacitors C3005, and C3006/C3007/C3046 are used to reduce high frequency noise.
R3003 and R3004 resistor divider set the output voltage to 9.3V. This regulator output is
electronically enabled by 0V signal at pin 2. MAKO (U3200) FET_ENX, Q3206, and Q3041 are used
to control the on-off at U3001 pin 2.
Regulator U3003 generates the 12.6V required by external accessory device at connector J4000-7.
Input and output capacitors C3012, and C3012 / C3013 are used to reduce high frequency noise.
R3003 and R3004 resistor divider set the output voltage to 12.6V. This regulator output is
electronically enabled by 0V signal at pin 2. MAKO (U3200) FET_ENX, Q3206, and Q3041 are used
to control the on-off at U3003 pin 2.
There are a total of eight other LDO regulators used to regulate the 9.3V supply down to specific
application voltages. U0941, U3002, and U3004 are set to supply 5V output. U0601 is set to supply
3V for the Abacus III IC. U6402 and U6406 generate 2.8 V for GPS Digital IO and RF circuitry while
U6407 regulator provides 1.5V for the GPS RTC module. U3201 regulator, which is capable of
handling up to 1 Amp, is set to 1.4V for the OMAP core.
Page 56
1-4Controller
Switcher1 (Q3200) in conjunction with the MAKO power management IC (U3200) is a highly
efficient dc-dc converter. In this application, it is configured as a synchronous buck dc-dc regulator. It
generates an accurate 3.6V output, which supplies directly to the MAKO internal switcher2 circuit as
well as the 1.4V regulator for the OMAP Core (U3201). A pulse width modulated (PWM) signal is
output from U3200 pin G14 to Q3200 pin 4 and controls the output voltage level. External
components L3200 and C3203 are needed to filter out the dc-dc converter output. R3200 (0.1 ohm)
is used for current sense and over-current circuit protection with 2A threshold. MAKO switcher2
output 2.3V and supplies to the rest of MAKO internal LDOs.
Switcher5 (Q3202) circuitry is similar to Switcher1. It is also configured as a synchronous buck dcdc regulator. It generates an accurate 5.2V output, which supplies directly to both VBUS1 and
VBUS2 supplies. External components L3202 and C3212 are needed to filter out the output. Q3208
and Q3207 prevent internal voltage leakage onto VBUS_SUPPLY (U3200 pin B13). When the radio
is operated in the HOST mode, USB_CONNECT (U3200 pin L6) is toggled HIGH (3.3V) turning on
PMOS FET (Q3207) through Q3208 inverter, and thus provides 5.2V to both Q3203 and Q3204
drains. Software will enable VBUS1_CMD and VBUS2_CMD either VBUS1 or VBUS2 port base on
the detection mechanism. Note, only one of two VBUS ports can supply up to 500mA (max) at one
time. R3207 and R3208 (0.2 ohm) are used for current sense and over-current circuit protection with
800mA threshold. In device mode, USB_CONNECT is toggled LOW to disable VBUS supply.
The MAKO power management IC (U3200) provides eight more LDOs. Some LDOs are
programmable to meet the requirement for various ASIC devices. V2, V3, and V9 are programmable
via SPI while V4, V5, V6, V8, and V10 are fixed. See Figure 1-2 for details.
1.2Power On/Off
The radio can switch ON and OFF in one of the following three ways:
1.ON/OFF switch (No Ignition Mode)
2.Ignition Sense and ON/OFF switch (Ignition Mode)
3.Emergency
1.2.1ON/OFF Switch
The On-Off push button is connected between MAKO MECH_SW (U3200 pin E4) and ground. This
pin is configured to operate as a momentary push button by tying MAKO SW_TYPE (U3200 pin B3)
to 2.5V. The MAKO will monitor this debounced signal via its internal 'Virtual Toggle Switch' (VTS).
The signal changes state each time the button is pressed and released. At turn on, VTS is set as
soon as the debounce logic detects a button press. At turn off, the button press is debounced for an
additional two seconds before VTS is toggled back to off.
1.2.2Ignition Sense
Ignition sense is initiated by applying either the car battery or separate voltage that is higher than 7V
to rear accessory connector J4000 pin 25. It will drive NPN transistor (Q4006) into saturation which
pulls its collector to ground and presents an active low to MAKO IGN_X input (U3200 pin B4). When
there is no voltage at J4000 pin 25, Q4006 is turned off and its collector is internally pulled high by
the MAKO Vsave supply. Because of the noisy nature of ignition signal, a long debounce period of
250ms is used before it will be recognized as a valid input.
Page 57
Controller1-5
1.2.3Emergency
The emergency switch, when engaged, grounds the base of Q4005 via rear accessory connector
pin J4000-23. This causes Q4005 to turn off and Q4015 to turn on and pulls the collector of Q4015
to ground presenting an active low to MAKO EMERG_PB (U3200 pin F4). An active low signal at
this pin is indicating that the emergency button or switch is being pressed. When the emergency
switch is disengaged, pin J4000-23 is floating and Q4005 is turned on by 5V at the base. This
results in turning off Q4015. The collector of Q4015 is pulled to logic high via an MAKO internal pullup resistor on EMERG_PB (U3200 pin F4).
1.2.4Power-Up Sequence
Figure 1-3 describes the typical power-up sequence on the mobile radio and the following events
that occur sequentially.
*TX_PA_Final (Q0702)
Battery
(J3000)
*Antenna Switch ckt.
*Audio_PA (U3500)
Ext_SWB+
U3003
SW_9.3V_PA_Reg
U3005 & U3006
SW_9.3V_RF_Reg.
U3001
12.6V
9.3V
9.3V
1
ON_OFF_CNTRL
Push On_Off (J4001-9)
(ON: Short Press)
(OFF: Long Press)
Emergency (J4000-23)
(ON: Ground)
(OFF: No Connect)
Ignition (J4000-25)
(ON: >7V)
(OFF: 0V)
UNSW_9.3V_Reg
Default
Voltage
Selection
For V2
and V3
2.5V
U3040
9.3V9.1V
BPLUS &
BAT_7V5
SW_TYPE
PGLDO2
PGLDO3
MAKO
(U3200)
MECH_SW
EMERG_PB
IGN_X
32.768KHZ
FET_ENX
Y3201
+
20 ppm
P_FET
(Q3201)
2
SW1_SUMCOMP
LDOs
XTAL32_OUTXTAL32_IN
PA_BPLUS
Switcher2
LOGIC_VDD
V2_1.875V
V3_1.35V
V4_2.775V
V6_2.9V
V7_2.775V
V8_5V
V9_3V
V10_3.3V
RESETX
Switcher1
(Q3200)
Not Used
Not Used
POWER ON RESET
U3202
U3203
3.6V
U3201
4
1.4V Core (0.87mA/MHz)
1.8V IO
1.4V_Reg.
5
OMAP1710
(U1000)
6
3
PWRON_RST (R12)
MPU_RST (U20)
OSC_IN (Y2)OSC_OUT (W3)
12MHZ
Y1000
7
+
20 ppm
RST_OUT (AA20)
Figure 1-3 Power-Up Sequence
Page 58
1-6Controller
1.Users initiate one of the three on-off control functions (On-Off push button, Ignition or Emer-
gency).
2.The MAKO (U3200) generates an output low at FET_ENX (pin E2) once it detects a valid
input at either Mech_SW (pin E4), Emerg_PB (pin F4), or IGN_X (pin B4). Q3206 dual PNP/
NPN transistor acts as double inverter between the MAKO and Q3201 power MOSFET
switch as well as over voltage protection. This logic low at the gate of Q3201 results in switching 9.3V to both Q3200 switcher circuitry and 1.4V regulator (U3201).
3.Next the MAKO (U3200) asserts the RESETX (pin C5) low to the OMAP for an additional
32mS after all the DC regulators are stable. It is then de-asserted, allowing the OMAP processor to start.
1.2.5Power-Down Sequence
Figure 1-4 describes the recommended power-down sequence on the mobile radio for proper
shutdown. The following events will occur sequentially.
*TX_PA_Final (Q0702)
Battery
(J3000)
*Antenna Switch ckt.
*Audio_PA (U3500)
Ext_SWB+
U3003
SW_9.3V_PA_Reg
U3005 & U3006
SW_9.3V_RF_Reg.
U3001
12.6V
9.3V
9.3V
1
ON_OFF_CNTRL
Push On_Off (J4001-9)
(ON: Short Press)
(OFF: Long Press)
Emergency (J4000-23)
(ON: Ground)
(OFF: No Connect)
Ignition (J4000-25)
(ON: >7V)
(OFF: 0V)
Default
Voltage
Selection
For V2
and V3
UNSW_9.3V_Reg
U3040
2.5V
SW_TYPE
PGLDO2
PGLDO3
MECH_SW
EMERG_PB
IGN_X
BPLUS &
BAT_7V5
9.3V
MAKO
(U3200)
32.768KHZ
FET_ENX
Y3201
20 ppm
+
P_FET
(Q3201)
4
SW1_SUMCOMP
LDOs
XTAL32_OUTXTAL32_IN
PA_BPLUS
Switcher2
LOGIC_VDD
V2_1.875V
V3_1.35V
V4_2.775V
V6_2.9V
V7_2.775V
V8_5V
V9_3V
V10_3.3V
INT_X
RESET_X
5
9.1V
Switcher1
(Q3200)
3.6V
1.4V_Reg.
U3201
1.4V Core (0.87mA/MHz)
1.8V IO
OMAP1710
(U1000)
Not Used
3
Not Used
GPIO_62(G20)
SPI_BUS
2
SPI
U3202
U3203
POWER ON RESET
CLK32K_IN (P13)
OSC_IN (Y2)OSC_OUT (W3)
12MHZ
Y1000
20 ppm
+
Figure 1-4 Power-Down Sequence
Page 59
Controller1-7
1.Users initiate one of the three on-off control functions (On-Off push button, Ignition and
Emergency).
2.The MAKO (U3200) starts an internal 125 ms watchdog timer and sets the shutdown interrupt
flag which causes the INT_X (pin B4) interrupt output pin to assert low.
3.The OMAP (U1000) then determines by way of SPI register access that it must initiate the
power down sequence.
4.The MAKO (U3200) asserts the RESETX (pin C5) to active low (system reset), turns off all
MAKO DC regulators, and de-asserts the FET_ENX (pin E2) which turns off 9.3V for the controller.
1.3Clocks
Figure 1-5 illustrates the controller clocks used throughout the radio.
TOMAHAWK P2
U0100
CLK2 OUT
XOSC BASE
+
0.5 ppm (GPS & CPHER)
+
1.5 ppm (NONGPS)
16.8 MHZ
TCXO
ARX DAC
MAKO P2
U3200
XOUTXINXTAL32_OUTXTAL32_IN
24.576MHZ32.768KHZ
The OMAP processor (U1000), which consists of an ARM and DSP core, needs three clocks for
operation: a 32.768 kHz square-wave, a 12 MHz sine-wave, and a 16.8 MHz square-wave clock.
The 16.8 MHz clock source is provided from the Tomahawk TCXO with its supporting circuitry
Q0100 buffer amplifier, routes to squarer-circuit U1006, and feed to EXT_CLK (U1000 pin N18). The
32.768 kHz clock is generated by the MAKO crystal Y3201 oscillator; converted to a gated clock by
U3202 and U3303 circuitry; then directly feed to OMAP CLK32_IN (U1000 pin P13) as well as GPS
IC (U6400). The OMAP needs the 32.786 kHz to determine the input reference clock (12, 13, or
19.2 MHz) applied to OSC_IN (U1000 pin Y2). Without this 32 kHz clock, the OMAP will potentially
program all the wrong dividers for USB and UART booting. The 12 MHz sine-wave is the main
system reference clock for the OMAP which all the internal clocks are derived from. External pull-up
on OSC32K_IN (U1000 pin V13) and grounding both OSC32K_OUT (pin AA1 and VSS_11 (pin
Y13) indicating that an external 32 kHz clock is used. The 24.576 MHz crystal (Y3200) oscillator is
the reference clock for MAKO CODEC and SSI clock.
Q0100
16.8MHz
U6404
U1006
U3202
U3203
Y3201Y3200Y1000
32.768 KHz
+
20 ppm+30 ppm
12MHZ
+
20 ppm
Figure 1-5 Clock Connections
ABACUS III
FREF
SiRF GPS
REF_CLK
LOW_REF_CLK
EXT_CLK (N18)
CLK32K_IN (P13)
OSC_IN (Y2)
OSC_OUT (W3)
U0600
U6400
General Pupose
TIMER
DPLL1
OMAP 3.3 Core
OMAP1710
U1000
xN
OSC32K_IN (V13)
OSC32K_OUT (AA13)
VSS_11 (Y13)
SYS_CLK_IN (Y4)
MPU CLK
DSP CLKxN
TC CLKxN
1.4V
10K
Page 60
1-8Controller
1.4Serial Peripheral Interface (SPI)
Figure 1-6 illustrates the controller SPI used throughout the radio.
1.8V
TOMAHA WK P2
U0100
1.8V
ABACUS III
U0600
1.8V
MAKO P2
U3200
SPI_CLK
SPI_DW
SPI_DR
CEX
DOUTB
SPI_CLK
SPI_DO
SPI_DI
SPI_CS
HPD SP I
SPI_CLK
SPI_MOSI
SPI_MI SO
THK_CE
PC
PD
PE
ABACUS3_CE
MAKO_CE
SPIF.SCK (U19)
SPIF. DOUT (W21)
SPIF.DIN (U18)
GPIO_44 (P15)
GPIO_9 (Y8)
GPIO_58 (R11)
1.8V
OMAP1710
U1000
MMC1 SPI
SPI.C LK (M14)
MMC.CMD (P11)
SPI.C S2 (P20)
SPI.C S1 (P19)
SPI.RDY (R18)
SPI.C S3 (P18)
SERIAL_C LK
SERIAL_D ATA
LED_CS
DISPLAY_C S
1.8V
10K
PROGM_I O_CS
1.8V
Level Trans lator
U6003
SN74LVC07A
1.8V
Level Trans lator
U4001
SN74 LVC0 7A
2.9V2.9V
LED’s Register
U6002
SN74 AHC5 94
CLOCK
DATA
LED_CS
Interface
CLOCK
DATA
DISPLAY_C S
5V5V
Accy’s t Register
U4000
SN74AHC594
CLOCK
DATA
LED_CS
LCD
47K
Figure 1-6 SPI Connections
The OMAP processor (U1000) has two SPI busses that it uses to communicate with the various
peripheral IC's. The first is the High Performance Data (HPD) SPI bus and the second is the multimedia card (MMC) SPI.
The HPD SPI is a synchronous serial bus made up of four lines, SPI_CLK, SPI_MOSI, SPI_MISO,
and chip select. The SPI_CLK line is used to control the speed of the data to/from the peripheral IC's
and the OMAP processor. This clock can be adjusted to different speed based on the IC's
specification.
HPD SPI module is used to interface to Tomahawk (U0100), Abacus III (U0600), and the MAKO
(U3200). This interface operates at 1.8 V logic levels. SPI_MOSI, or commonly known as
TRANSMIT Data, is a data string from the OMAP while SPI_MISO or RECEIVE Data is data string
to the OMAP.
The MMC SPI is a 3-wire bus; consisting of SERIAL_CLK, SERIAL_DATA, and chip select. This SPI
bus is used to interface to accessory Serial-Parallel IC (U4000), the Control Head LED's and LCD
driver. For accessory Serial-Parallel IC, the logic level out of the processor is level shifted from 1.8V
to 5V through U4001 and pull-up resistors R4100, R4101, and R4103.
Page 61
Controller1-9
1.5Serial Synchronous Interface (SSI)
Figure 1-7 illustrates the controller SSI used on the radio controller design.
1.8V
1.8V
TOMAHAWK P2
U0100
1.8V
ABACUS III
U0600
1.8V
MAKO P2
U3200
OPTION
BOARD I/F
J4003
DMCS
TXCLK
SDTX
SFTX
CLKOUT
DOUTA
SYNCB
VC_DCLK
VC_FSYNC
VC_RX
VC_TX
CLK
FSYNC
VC_RX
VC_TX
OMAP1710
U1000
GPIO_2 (D15)
McBSP2.CLKX (Y6)
McBSP2.DX (AA5)
McBSP2.FSX (W7)
McBSP2
McBSP2.CLKR (V7)
McBSP2.DR (P10)
FS
McBSP2.FSR (W6)
GPIO_40 (W15)
McBSP1
McBSP1.CLKX (G21)
McBSP1.FSX (H15)
McBSP1.DX (H18)
McBSP1.DR (H20)
R3572
10K
McBSP3
McBSP3.CLKX (N14)
McBSP3.FSX (AA17)
McBSP3.DX (P14)
McBSP3.DR (T19)
Figure 1-7 SSI Connections
The OMAP processor (U1000) has a total of three SSI or multi-channel buffer serial ports (McBSP)
modules that are used to directly interface to the CODECs in the Tomahawk, Abacus, and MAKO,
as well as command/data connections to the Option Board, and between Tx and Rx radios within a
Repeater.
As shown in Figure 1-7, McBSP1 is a 4-wire bus and interface to the MAKO CODEC as well as the
Option Board. McBSP2 is 6-wire bus; 3-wire dedicated to the Tomahawk Tx audio and the other 3wire to Abacus Rx audio. McBSP3 is a 4-wire bus, and used primarily to interface between Tx and
Rx radios within a Repeater.
Page 62
1-10Controller
1.6ACC_ID Interface
Smart accessories use the Accessory ID (ACC_ID) Interface to help the radio determine which
smart accessory, if any, are attached to the radio. Figure 1-8 illustrates the ACC_ID connections
used within the radio.
R3591
5V
R3592
1.875V
R3588
OMAP1710
U1000
HDQ (N20)ACC_ID_UP (L7)
MAKO
U3200
ACC_ID_MMP (P9)
ACC_ID_MAP (M8)
R3515
2.9
V
R3514
2.9V
Vref1Vref2
SCL1
SDA1
5V
SCL2
SDA2
2-BitTranslator
U3508
MAP
Figure 1-8 ACC_ID Interface Connections
The MAKO (U3200) switches the ACC_ID busses from the Control Head MMP (Mobile Microphone
Port) connector and the rear MAP (Mobile Accessory Port) connector to the OMAP ACC_ID bus.
Level translator (U3508) is required to level shift between 2.9V to 5V.
MMP
Page 63
Controller1-11
1.7USB Interface
The OMAP processor (U1000) supports two USB ports. The radio makes use of these USB ports to
communicate with smart accessories, and connection to a host computer for radio programming via
CPS and tuning via the Tuner Tool. One port is available via the MMP connector and the other via
the MAP connector.
Note: The USB ports are designed to support Motorola accessories and approved applications only
and will not support third party "Plug-n-Play" USB devices.
Figure 1-9 shows the details of the HSSI connections within the radio.
V_SW5
Q320 7
DP (N6)
DM (P7)
DP (N7)
DM (P8)
0 VBus Di sable
1 VBus Enab le
Q320 8
D-
Q320 3
Q320 4
R3240
R3207
R3208
VBus
D+
D-
MMP
VBus
D+
OMAP 1710
Pin Group 1
Pin Group 0
USB1_ TXE N (W16)
USB1_ DAT (W 14)
USB1_ SE0 (R13)
USB0 TXEN (W4)
USB0_ DA T (P9)
USB0_SE0 (R8)
USB_INT (L15)
Mako
USB1_OE (B08)
USB1_ DAT_ TXD (C08)
USB1_SE0 (D08)
USB2_OE_RCV_RTS (A09)
USB2_ DA T_VP (B 09)
USB2_SE0_VM_RXD (C09)
USB_INTX (C10)
3/6 Wire
IF and
SPI
Registers
3 Wire
IF and
SPI
Registers
Vbus1
Monitor
USB1
Transceiver
Vbus2
Monitor
USB2
Transceiver
USB_Connect (L6)
VBus1_ Sens (E 12)
VBus1_ Cmd (C14)
VBus1 (H10)
VBus2_ Sens (F11)
VBus2_ Cmd (C13)
VBus2 (D 12)
MAP
Figure 1-9 USB Interface Connections
The OMAP processor USB host controller communicates with accessories at either 1.5 Mbps or 12
Mbps data rates depending on the accessory. Either port can be used as a host or a device, the only
limitation is that both ports cannot be used as a device at the same time.
The MAKO (U3200) incorporates two USB transceivers that provide the physical layer signaling for
the two ports. Each transceiver generates and receives the DP and DM differential signals of the
USB port. The transceiver interfaces to the OMAP processor through a three-wire interface
consisting of two bi-directional signals (SE0 and DAT), and one uni-directional signal (TXEN). The
MAKO also includes two bus monitors that sense the connection or removal of a device and
determine whether or not to supply current to that device via Q3203 or Q3204 up to a maximum of
500 mA per port.
The USB host/device mode assignment is determined when a user attaches a USB device to the
port. The accessory contains information about what the USB mode assignment should be, this
information is sent to the radio via the ACC_ID. See section 1.6 on page 1-10, for more details on
the ACC_ID implementation. When configured as a host, VBUS is turned on by the MAKO, when
configured as a device, VBUS will be shut off and the external host supplies the VBUS power.
Page 64
1-12Controller
1.8Control Head Interface
The Control Head interface can be broken up into 4 separate sections: Display and Indicators,
Keypad, Mobile Mic Port (MMP), and Audio signals. Each of these sections will be covered in detail.
The block diagram of the Control Head is shown in Figure 1-10. Two different versions of the Control
Head are currently supported: a Display Control Head with LCD display, and a Numeric Display
Control Head with a 2 digit LED display and indicators. Details of the various Control Heads can be
found in section, Control Head Service Information.
Display Version Only
LCD Display
132 x 34 Dot Matrix
Plus Icons
Display
Backlight
Display
Driver
Serial To Parallel Converter
RED YEL GRN
4 x 3 Push Button
CONTROL HEAD
Matrix
Numeric Display Version Only
DisplayDisplay
BCD to 7
BCD to 7
Segment
Segment
Driver
Driver
Serial to Parallel
Converter
Volume Knob
Display
Backlight
Icons
On/Off Switch
Speaker
Mobile Mic Port
Display Reset
Display D/C
Displ_CS (O/P)
Serial Data (O/P)
Serial Clock (O/P)
LED_CS (O/P)
Supply Voltage (Switched)
DC Ground
Power On/Off
2 Volume Encoder Outputs
SPKR+
SPKR-
4 Rows
3 Columns
GPIO-0/ Accessory Detach
GPIO-1/D+
GPIO-2/DGPIO-3/PTT
GPIO-4/HOOK
OPT_5V/Vbus
ACC_ID
Mic Audio
Headset Audio/Spkr+
Signal Ground
1.8.1Display and Indicators
The Control Head interface supports LED numeric displays and LCD full alphanumeric displays.
Both types of displays, as well as the LED indicators and backlights are controlled via a serial
connection with the OMAP processor (U1000). The serial interface consists of clock, data and chip
select lines that are connected directly from the OMAP processor to the serial devices in the Control
Head. See section Control Head Service Informationfor more information on the various Control
Heads supported.
Figure 1-10 Control Head Block Diagram
Page 65
Controller1-13
1.8.2Keypad
The keypad interface is a standard pulsed 4 row by 3 column configuration controlled directly by the
OMAP processor (U1000). Each of the 3 column output lines is toggled high in sequence and the 4
row input lines are monitored to detect if a button has been pressed. The OMAP processor then
decodes which button was pressed using the appropriate column and row stimulus and response
information. See section Control Head Service Information for more information on the various
Control Heads supported.
1.8.3Mobile Mic Port (MMP)
The Mobile Microphone Port (MMP) is a newly defined Motorola accessory port that contains audio,
digital I/O, serial interfaces, and accessory supply lines; and is similar in function to Motorola's
legacy microphone connectors. The multiplexing of these functions is handled by circuitry internal to
the MAKO (U3200). The function of each pin is listed in Table 1-1.
Table 1-1 Mobile Mic Port Functions
MMP Pin
Number
MMP Pin NameMAKO Pin
1ACC_IDAccessory Identifier
2GPIO_3 / PTTGeneral Purpose I/O or PTT
3SpkrHandset Audio
4GPIO_2 / D- USB D-
5GND (Ground)Ground
6Opt_5V / Vbus5 Volt Supply
7Mic+Mic Input
8GPIO_1 / D+ USB D+
9GPIO_4 / HookGeneral Purpose I/O or Hook
10GPIO_0 / PwrOnGeneral Purpose I/O or Power
On Detect
The MMP includes 2 serial interfaces: an USB port and an ACC_ID interface. The USB port can be
used as either a device (radio is device) or as a host (radio is host). When configured as a device,
the radio can be programmed or tuned using MOTOTRBO CPS or Tuner software. When configured
as a host, various smart accessories can be used with the radio. See section 1.7 on page 1-11 for
more information on the USB interface.
The ACC_ID interface is used by accessories to provide the radio with information needed to
configure the interface for that accessory. See section 1.6 on page 1-10 for more information on the
ACC_ID interface.
Note: The USB ports are designed to support Motorola accessories and approved applications only
and will not support third party "Plug-n-Play" USB devices.
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1-14Controller
1.8.4Audio Signals
The Control Head interface supports 3 audio signals from the radio: Speaker audio, Mic audio, and
Handset audio. Speaker audio is a differential audio connection to the radios audio PA. It is
connected in parallel with the MAP speaker terminals. Mic audio is a single ended low level audio
input connected to the MMP port. The Handset audio is a single ended audio output from the radio
connected to the MMP.
1.9Mobile Accessory Port (MAP)
The Mobile Accessory Port (MAP) is a newly defined Motorola accessory port that contains audio,
programmable digital I/O, serial interfaces, and accessory supply lines; and is similar in function to
Motorola's legacy products accessory connectors.
Table 1-2 Mobile Accessory Port Functions
MAP Pin
Number
1USB_D+
2USB_D-
3V_Bus
4USB_Ground
5ACC_MAP_ID_2Accessory Identifier
6ACC_MAP_ID_1
7Ext_SWB+Switched Battery Voltage
8Power GroundGround
9Ext_Spkr-External Speaker
10Ext_Spkr+
11Tx_AudioTx Audio Input
12Audio GroundGround
13Aux_Audio_Out_1Auxiliary Audio Output
MAP Pin NameMAKO Pin
USB for programming or Smart Accessory
14Rx_AudioRx Audio Output
15Aux_Audio_Out_2Auxiliary Audio Output
16GroundGround
17Prgm_In_1_(PTT)Programmable Input with prescribed function
of PTT
18GroundGround
19Prgm_IO_2 (Monitor)Programmable Input/Output with prescribed
function Monitor
20Prgm_IO_6Programmable Input/Output
Page 67
Controller1-15
Table 1-2 Mobile Accessory Port Functions
MAP Pin
Number
MAP Pin NameMAKO Pin
21Prgm_IO_3 (Chan_Act)Programmable Input/Output with prescribed
22Prgm_IO_7Programmable Input/Output
23Prgm_In_4 (Emergency)Programmable Input with dedicated function
24Prgm_IO_8Programmable Input/Output
25Prgm_In_5 (Ign Sense)Programmable Input with dedicated function
26Prgm_Out_9 (Ext_Alarm)Programmable Output with prescribed func-
1.9.1MAP Programmable I/Os
The MAP contains 7 general purpose I/Os. One is specifically an output, 1 is specifically an input,
and the remaining 5 can be either input or output. The MAP also contains 2 dedicated inputs. All
input signals map directly to OMAP (U1000) GPIOs, while all outputs are controlled from the OMAP
through a SPI connected shift register (U4000) referred here as the Acc_Shift_Reg. While 7 of the 9
I/Os are general purpose and designed to be programmable through the CPS, several have
recommended functions that will be detailed below.
function Channel Activity
for Emergency Switch
for Ignition Sense
tion of External Alarm
All of the programmable I/Os, except the dedicated inputs, use inverted logic, IE: a 1 on the
connector as an input will be seen by the OMAP as a 0 and visa versa. Also, a 1 output by the
OMAP through the Acc_Shift_Reg will be seen as a 0 output on the connector.
•Prgm_In_1 (PTT): Programmable input that has the recommended function of Push-To-Talk
(PTT). This signal connects to the OMAP GPIO_7 (U1000 pin M15) as an input.
•Prgm_IO_2 (Monitor): Programmable input/output that has the recommended function of
Monitor. This signal connects to the OMAP GPIO_32 (U1000 pin B17) as an input. The output
for this signal is driven from Acc_Shift_Reg bit 0 (U4000 pin 15).
•Prgm_IO_3 (Chan_Act): Programmable input/output that has the recommended function of
Channel Activity (Chan_Act). This signal connects to the OMAP GPIO_33 (U1000 pin J14) as
an input. The output for this signal is driven from Acc_Shift_Reg bit 1(U4000 pin 1).
•Prgm_I_4 (Emergency): Dedicated input that is having the function of Emergency
(Emerg_Sw). This signal connects to the MAKO EMERG_PB (U3200 pin F4) as an input.
•Prgm_I_5 (Ign_Sense): Dedicated input that is having the function of Ignition Sense
(Ign_Sense). This signal connects to the MAKO IGN_X (U3200 pin B4) as an input.
•Prgm_IO_6: Programmable input/output. This signal connects to the OMAP ARMIO_15
(U1000 pin E19) as an input. The output for this signal is driven from Acc_Shift_Reg bit 2
(U4000 pin 2).
•Prgm_IO_7: Programmable input/output. This signal connects to the OMAP ARMIO_3
(U1000 pin V8) as an input. The output for this signal is driven from Acc_Shift_Reg bit 3
(U4000 pin 3).
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1-16Controller
•Prgm_IO_8: Programmable input/output. This signal connects to the OMAP GPIO_24 (U1000
pin V5) as an input. The output for this signal is driven from Acc_Shift_Reg bit 4 (U4000 pin
4).
•Prgm_Out_9 (Ext_Alarm): Programmable output that has the recommended function of
External Alarm (Ext_Alarm). The output for this signal is driven from Acc_Shift_Reg bit 5
(U4000 pin 5).
1.9.2MAP Serial Interfaces
The MAP includes 2 serial interfaces: an USB port and an ACC_ID interface. The USB port can be
used as either a device (radio is device) or as a host (radio is host). When configured as a device,
the radio can be programmed or tuned using MOTOTRBO CPS or Tuner software. When configured
as a host, various smart accessories can be used with the radio. See section 1.7 on page 1-11 for
more information on the USB interface.
The ACC_ID interface is used by accessories to provide the radio with information needed to
configure the interface for that accessory. See section 1.6 on page 1-10 for more information on the
ACC_ID interface.
Note: The USB ports are designed to support Motorola accessories and approved applications only
and will not support third party "Plug-n-Play" USB devices.
1.9.3MAP Audio Signals
The MAP has Speaker, Tx, Rx, and Aux audio outputs. Speaker audio is a differential output from
the radio's audio PA (U3500). Tx audio is a mic/line level input audio for transmit. Rx audio is a line
level output audio from the receiver. Both Rx and Tx audio are programmable as emphasized or deemphasized audio. Aux audio provides 2 outputs that can be used for public address functions. See
section 1.8.4 on page 1-14 for more information on the audio circuits.
Page 69
Controller1-17
1.10Option Board Interface
The Option Board interface uses a SSI port from the OMAP processor (U1000) to transfer both data
and commands in a synchronous time slotted fashion. Data, as defined here, can be either digitized
audio to be processed or generated by the Option Board; or any other form of data that can be
formatted into the synchronous slots. The OMAP processor SSI has data out, data in, clock, and
frame sync signals associated with it. All of these signals as well as a separate system sync signal,
2 general purpose I/O's, reset, and PTT comprise all of the signals supported for this interface. This
SSI port is shared with the MAKO (U3200) providing a convenient path for audio data to be
processed or generated by the Option Board as shown in Figure 1-11. The entire Option Board
signal descriptions are given in Table 1-3.
OMAP McBSP1
McB SP1_Sync (H15)
VC_Fsync (D7)
Mako
McBSP1_BClk (G21)
McBSP1_Dout (H18)
McBSP1_ Din (H20)
Figure 1-11 Option Board SSI Connections and Data Flow
Table 1-3 Option Board Interface Signal Functions
Signal
I/O Relative To
Option Board
VC_DClk (E7)
VC_Rx (A7)
VC_Tx (B7)
Option Board
Interface
SSI_ Sync (J4003-4)
SSI_ Clk (J4003-6)
SSI_ Din (J4003-8)
SSI_ Dout (J4003-10)
Function
SSI_Data_InInputSynchronous Serial Interface data and com-
mands into the option board.
SSI_Data_OutOutputSynchronous Serial Interface data and com-
mands out of the option board.
SSI_ClkBidirectionalSynchronous Serial Interface clock for the SSI
data in and out
SSI_FsyncBidirectionalSynchronous Serial Interface frame sync for the
SSI data in and out
Shared_System_SyncInputSynchronization signal generated by the OMAP
Reset_OutInputOMAP reset
Page 70
1-18Controller
Table 1-3 Option Board Interface Signal Functions
Signal
Opt_GPIO_1BidirectionalGeneral purpose bidirectional I/O. Can be used
Opt_GPIO_2BidirectionalGeneral purpose bidirectional I/O. Can be used
Opt_Brd_PTTOutputPush To Talk signal from the option board.
SW_9V3InputSwitched supply for the option board.
1.11Audio
The audio circuitry consists of both analog and digital audio paths. Figure 1-12 shows the basic
block diagram of the audio interconnections.
OMAP U1000Mako U3200
SSI Out
SSI In
Digit al
BP+LBF &
Volu me
Digit al
BP+LBF &
Volu me
I/O Relative To
Option Board
DAC &
LPF
ADC
Mic B ias
Q3501
Ext Mic Enable
Function
for signaling between the option board and the
OMAP.
for signaling between the option board and the
OMAP.
Q3502
U3502-2
Level
Shifter
U3503
U5205-4
Digit al
Volu me
Control
U3501
U3502-1
Σ
Publi c Address
Enable 2
Q3504
Publi c Address
Enable 1
U3500
Q3505
U3502-4
U3502-3
I2C Bus
U3505-2
Mic B ias
Int
Ext
Low Leve l MuteAudio P A Enable
Q3503
Publi c Address
Mic E nable
Int S peaker
U3505-1
1.11.1Receive Audio
The OMAP (U1000) provides digital audio to the MAKO through use of a Serial Synchronous
Interface, SSI. The SSI bus is comprised of four lines: clock, frame sync, Rx data, and Tx data.
These four lines provide data to the MAKO (U3200) using a packet frame structure consisting of four
slots. The actual audio data is transferred to the MAKO in the first slot of each frame using 16-bit
pulse-code modulated PCM audio.
MMP Connector
Figure 1-12 Audio Block Diagram
Publi c Addr ess 1
Tx A udio
MAP Connector
Rx Audio
Ex t Sp eak er
Publi c Addr ess 2
Page 71
Controller1-19
The MAKO converts the PCM data to analog audio and applies several stages of gain and
attenuation to ensure the proper level is output to the analog audio circuitry (70mV RMS under
standard test conditions of 60% full deviation, 1kHz audio tone). The analog audio circuitry routes
audio to several external ports for accessories including: handset audio, Rx audio, and public
address (see Figure 1-12).
The normal RX audio path to the speakers is from the MAKO through an Op Amp (U3505-2) and low
level mute gate (Q3502) and through digital attenuator (U3501) that provides volume control for the
speaker outputs. The attenuator is controlled by the OMAP via a bidirectional I2C bus. Level shifting
of the I2C bus is provided by U3503. The digital attenuator provides 256 possible levels attenuation
as well as a shutdown mode for muting audio to the speakers. The attenuator is biased at half of the
supply to ensure proper operation using resistors R3569 and R3575; C3536 is used to provide a
strong AC ground at the bias point. The software volume implementation uses 32 positions to define
the radio's range and step size and is designed to operate with a 360 degrees fully rotational volume
knob. Approximately one full rotation of the front panel volume knob will correspond to a change in
audio level from minimum to maximum.
From the digital attenuator, the audio signal is passed to the audio PA (U3500). This is a bridge-tied
amplifier that provides a fixed gain of 40dB. The audio PA is enabled by pulling AUDIO_PA_ENA
low allowing the voltage on pin 8 of U3500 to go to 9.8V. Pulling AUDIO_PA_ENA high will set the
voltage on pin 8 of U3500 to about 5.3V and will mute the PA. Both the internal and external speaker
outputs are in parallel; the only way to disable the internal speaker is to unplug the connector on the
inside of the control head. The speaker output is calibrated to provide 7.5W into an 8-ohm load
under standard test conditions.
The various accessory audio paths are selectable via CPS depending on which accessories or
optional configurations are required to be supported. Please refer to Figure 1-12 to understand
which components the audio should pass through to get to a particular accessory output.
1.11.2Transmit Audio
Transmit audio can be sourced from either the MMP or the MAP microphone paths found on
connectors J4001-30 or J4000-11 respectively. The MMP microphone carries a 9.3V bias through a
660 ohm load from R3532 and R3547 with a strong AC ground from C3524 through only a 560 ohm
load from R3547. Both MMP and MAP paths are routed to the MAKO separately with the option of
disabling the 9.3V bias on the MAP microphone path through Q3501. Depending on whether an
MMP or MAP PTT signal was activated, a single switching stage will route the correct microphone
path to the necessary gain stages and ADC that will send 16-bit PCM audio to the OMAP for signal
processing via the SSI bus.
The transmit gain stages in the MAKO is calibrated based on an 80mV input under standard test
conditions. The microphone sensitivity is programmable through the use of CPS.
Page 72
1-20Controller
Notes
Page 73
Section 2
TROUBLESHOOTING CHARTS
1.0Controller Troubleshooting Chart
Controller
Check
2-1
Pass
Power-Up
Self Check
Yes
Speaker &
Control head
OK?
Yes
9.3V_RF @
pin 5 of U3001?
Yes
5V_SW @
pin 1 of U3002?
Yes
Check 9R1
9.1V@ E0401
Yes
Volume knob
functional?
Yes
Controller
OK
No
Go to Power-Up
Self Check
No
Go to Control head
charts
Check these three conditions @
No
U3001 (pin 4=13.2V; pin 2=0V;
pin 1=1.26V) before replacing
U3001.
Check these conditions @
No
U3002 (pin 4=9.3V; pin 2=1.26V;
before replacing U3002.
No
No
Apply on channel
frequency and standard
modulation and check
U3501 pin10 to see the
audio level varies with
volumne knob turn. If not,
check to see there is an
activity on I2C bus by
probe at I2C_CLK and
I2C_Data test points.
Q0108 pin 2
=2.8V
Yes
Check gate Q0107 for 0V.
No
Check
Lock_Detect
1.875V @
R2518
Check Tomahawk GPO Register
settings to see GPIO_4 is set to
output HIGH.
No
Yes
Check SPI programming
to Tomahawk IC.
If no I2C activities, then
there is possibility of no
connection between
OMAP BGA pins to the
traces. Try reflow OMAP
(U1000) first or x-ray for
possible BGA short.
Page 74
2-2Power-Up Troubleshooting Chart
2.0Power-Up Troubleshooting Chart
Power-Up
Self Check
72MHz @
TP_SDRAM_CLK
Testpoint
Yes
Go to Control head
charts
No
Y1000 pin 1
= 12MHz Sine
Wave
Yes
Check Flash & SDRAM
Voltages
1.875V @ R2011 & R2004
Check OMAP (U1000) &
SDRAM (2001) IC solder
connection.
Check OMAP (U1000) &
Flash (U2000) IC solder
connection
* Check to see volume pulses on J60001-14
(Vol_A) and J6001-13 (Vol_B) resemble this
diagram.
* Check BRICK’S DC power distribtion
* Check U6000 pin2 for 1.265V for
replacing U6000.
* Check SPI (Clock,Data,Display_CMD,Display_CE)
write to J6000 connector. If one of these signals is
absence, then trace the signal back to BRICK
control head J4001 connector before replacing
OMAP (U1000).
* Check SPI (Clock,Data,LED_CE) write to U6002.
If one of these signals is absence, then trace the
signal back to BRICK control head J4001 connector
Table 3-3 Controller GPS R4 Schematic Diagrams and Parts List
Controller R4 used on PCB:
8471495L03_C VHF (136-174 MHz), 1-25 W
8478023A16_C VHF (136-174 MHz), 25-45 W
8471165L05_C UHF (403-470 MHz), 1-25 W
8486777Z14_C UHF (403-470 MHz), 25-40 W
SCHEMATICS
Controller GPS
DC Supply
DC Distribution
Peripheral (sheet 1 of 2)
Peripheral (sheet 2 of 2)
Microprocessor
Memories
Audio and USB
FREQ SWITCH
(Used as SW8 for PORTABLE, Channel Activity for MOBILE)
(Used as SW4 for PORTABLE, Monitor for MOBILE)
(Used as SW2 for PORTABLE, Volume B for MOBILE)
(Used as SW1 for PORTABLE, Volume A for MOBILE)