Freescale Semiconductor KIT34825EPEVME User Manual

Freescale Semiconductor

User’s Guide

KIT34825EPEVME Evaluation Board

Document Number: KT34825UG

Rev. 2.0, 8/2010

Figure 1. KIT34825EPEVME Evaluation Board

Table of Contents

1 Kit Contents / Packing List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2 Important Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

3 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

4 Hardware Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

5 Software Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

6 Using the Evaluation Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

7 KIT34825EPEVME Board Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

8 KIT34825EPEVME Evaluation Board Bill of Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

9 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

10 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

© Freescale Semiconductor, Inc., 2009 - 2010. All rights reserved.

Kit Contents / Packing List

1 Kit Contents / Packing List

• KIT34825EPEVME Evaluation Board (1)

• Standard USB A-to-B cable (1)

• CD34825 (1)

KIT34825EPEVME Evaluation Board, Rev. 2.0

2 Freescale Semiconductor

2 Important Notice

Freescale provides the enclosed product(s) under the following conditions:

This evaluation kit is intended for use of ENGINEERING DEVELOPMENT OR EVALUATION
PURPOSES ONLY. It is provided as a sample IC pre-soldered to a printed circuit board to make
it easier to access inputs, outputs, and supply terminals. This EVB may be used with any
development system or other source of I/O signals by simply connecting it to the host MCU or
computer board via off-the-shelf cables. This EVB is not a Reference Design and is not intended
to represent a final design recommendation for any particular application. Final device in an
application will be heavily dependent on proper printed circuit board layout and heat sinking
design as well as attention to supply filtering, transient suppression, and I/O signal quality.

The goods provided may not be complete in terms of required design, marketing, and or
manufacturing related protective considerations, including product safety measures typically
found in the end product incorporating the goods. Due to the open construction of the product, it
is the user's responsibility to take any and all appropriate precautions with regard to electrostatic
discharge. In order to minimize risks associated with the customers applications, adequate design
and operating safeguards must be provided by the customer to minimize inherent or procedural
hazards. For any safety concerns, contact Freescale sales and technical support services.

Should this evaluation kit not meet the specifications indicated in the kit, it may be returned within
30 days from the date of delivery and will be replaced by a new kit.

Freescale reserves the right to make changes without further notice to any products herein.
Freescale makes no warranty, representation or guarantee regarding the suitability of its products
for any particular purpose, nor does Freescale assume any liability arising out of the application
or use of any product or circuit, and specifically disclaims any and all liability, including without
limitation consequential or incidental damages. “Typical” parameters can and do vary in different
applications and actual performance may vary over time. All operating parameters, including
“Typical”, must be validated for each customer application by customer’s technical experts.

Freescale does not convey any license under its patent rights nor the rights of others. Freescale
products are not designed, intended, or authorized for use as components in systems intended
for surgical implant into the body, or other applications intended to support or sustain life, or for
any other application in which the failure of the Freescale product could create a situation where
personal injury or death may occur.

Should Buyer purchase or use Freescale products for any such unintended or unauthorized
application, Buyer shall indemnify and hold Freescale and its officers, employees, subsidiaries,
affiliates, and distributors harmless against all claims, costs, damages, and expenses, and
reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use, even if such claim alleges that Freescale
was negligent regarding the design or manufacture of the part.Freescale™ and the Freescale
logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are the
property of their respective owners.© Freescale Semiconductor, Inc., 2010. All rights reserved.

Important Notice

KIT34825EPEVME Evaluation Board, Rev. 2.0

Freescale Semiconductor 3

Introduction

3 Introduction

This KIT34825EPEVME evaluation kit is for demonstrating the capability and features of the 34825 and
is aimed to make it easy for users to evaluate the performance of the 34825. The KIT34825EPEVME
evaluation kit contains an 34825 evaluation board, a graphic user interface (GUI) software for personal
computers (PC), and connection cables.

The 34825 is designed to support the Universal Charging Solution (UCS) recommended by the OMTP
(Open Mobile T
wired accessories. A typical application circuit is shown in Figure 2. The 34825 offers five pins (VBUS,
ID, DP, DM, and GND) to directly interface to the
connected to the evaluation kit (which simulates a cell phone system) through the mini-USB connector.
The 34825 also offers pins to interface to the USB, audio, UART, the I2C bus, and the interrupt (
signals of the baseband in the cell phone system. All these signals are simulated by the evaluation kit so

users do not need to generate them.

erminal Platform) as well as to use the same 5-pin micro or mini-USB connector for other

mini or micro-USB connector. Accessories are

INT)

Baseband

GPIO

I2C

UART

USB XCVR

AUDIO

34825

VDDIO
INT
I2C_SDA
I2C_SCL
RXD
TXD
D+
D­SPK_L
SPK_R
MIC

VDD

ISET

OUT

VBUS

DP

DM

GND

LI+

ID

Charger

USB Connector

V

BUS

ID

D+

D-

GND

Figure 2. The Typical Application Circuit of 34825

The evaluation kit is designed to work together with a PC running Microsoft Windows for easy

emonstration or evaluation. All baseband signals in Figure 2 are generated by the evaluation kit with

d
the help from the PC, so the user does not need to provide special equipment. The 34825 evaluation

oard contains an MCU block to generate the I2C signals to control the 34825 and to receive the interrupt

b
signal from the 34825 using a GPIO pin. The MCU block is controlled by the PC with the GUI via a USB
connection. The PC together with the MCU block simulates the host device of the I2C bus and the
interrupt interface of the baseband circuit in a cell phone system. The evaluation kit uses the PC to obtain
the audio signals and a USB flash memory device to generate the D+ and D- signals. The UART signals
can be obtained from the MCU block but is not enabled in this version of the MCU firmware.

The evaluation board offers other features for the simp

lification of the evaluation. A remote control
simulator is offered for simulation the remote control buttons. An accessory simulator allows users to
simulate the attachment or detachment of accessories without connecting a real accessory to the
mini-USB connector. LEDs are used to indicate two logic outputs. Jumpers are offered for configuration
of the evaluation board. The evaluation board offers all test points needed for evaluation of the 34825 or
directly connecting the IC to a real cell phone printed circuit board (PCB) with jumping wires.

KIT34825EPEVME Evaluation Board, Rev. 2.0

4 Freescale Semiconductor

Introduction

Standard A
Connector

MCU Block

Standard B
Connector

Jumpers

Remote
Control
Simulator

3.1 EVB Features

• Input supply voltage ranges

• VDD: from 2.7 to 5.5V

• VBUS: from 2.8 to 28V

• VDDIO: from 1.65 to 3.6V

• All baseband signals generated in the evaluation kit with a PC

• An on-board USB-to-I2C interface acting as an I2C host

• Powered and controlled by one USB port

• LEDs status indication of the OUT and the

• On-board accessory and remote control simulators

• Can be directly jump connected to a real cell phone PCB for evaluation

• 5 inch x 4 inch board size

MIC Jack

Figure 3. The 34825 Evaluation Board

ISET

Stereo
Headphone Jack

MC34825
Circuit

Mini-USB
Connector

Test Points

Accessory
Simulator

3.2 Required Equipment

Minimum required equipment:

• USB-enabled computer with Windows 2000 or later operating system

• A standard USB A-to-B cable

KIT34825EPEVME Evaluation Board, Rev. 2.0

Freescale Semiconductor 5

Hardware Description

4 Hardware Description

The hardware in the evaluation kit includes an 34825 evaluation board and a standard USB A-to-B cable.
The evaluation board has three major blocks: the circuit related to the 34825, the remote control and
accessory simulator, and the USB-to-I2C interface. This section describes the above three blocks as well
as an example of an audio accessory with remote control.

4.1 34825 Circuit

The schematic related to the 34825 is shown in Figure 4. Jumpers are offered to configure the evaluation
board for demonstration or evaluation purposes. When the evaluation board is used to be directly jump
connected to a cell phone PCB, these jumpers should be disconnected to prevent interference between
the signals from the evaluation board and the cell phone board.

4.1.1 I2C and Interrupt Signals

The I2C signals are the interrupt signal are connected to the MCU. The transistors Q1 and Q2 are for
level shifting between the 5V I2C signal for the MCU and the VDDIO from the 34825. The jumpers J6, J7,
and J8 should normally be always connected unless the evaluation board is used to directly jump these
signals to a cell phone PCB, in which case the signals are jumped directly from the corresponding test
points TP3, TP4 and TP5 to the cell phone PCB and the above jumpers should be disconnected.

4.1.2 Audio Signals

The audio signals include the microphone (MIC) signal and the stereo speaker (SPK_L and SPK_R)
signals. These three signals are connected to the microphone and the stereo audio jacks.

4.1.3 UART Signals

The UART signals are connected to the MCU on the evaluation board via jumpers J16 and J17 as well
as transistors Q3 and Q4. The two transistors are for level shifting purpose. Since the UART features are
not enabled, users should keep the JP16 and JP17 open all the time. The UART feature can be evaluated
with the UART signals from a different circuit by jumping the signals to test points TP18 and TP19.

4.1.4 LED Indicators

The evaluation offers two LEDs to indicate the status of the two logic signals ISET and OUT. When a
power supply is attached to the mini-USB connector, depending on the type of the power supply, the
output will indicate either high impedance open-drain output or low impedance to ground. The red LED
DS2 is used to indicate the
datasheet for more details), the voltage at the VBUS pin is switched to the OUT pin. The red LED DS1
will indicate the voltage level at the OUT pin. Jumpers J4 and J5 should always be connected for these
two signals. There are another two LEDs on the Evaluation Board DS3 and DS4. They are reserved for
Freescale internal use only. Please keep the jumpers J10 and J11 open all the time.

ISET

ISET logic level. If the internal power MOSFET is turned on (refer to the

KIT34825EPEVME Evaluation Board, Rev. 2.0

6 Freescale Semiconductor

VDDIO

21

21

21

DS1

DS1

U4

U4

123

TP23TP23

TP24TP24

TP25TP25

123

U5

U5

DS4

DS4

DS3

DS3

DS2

DS2

2 1

RED LED

RED LED

R

R

R

R

R431KR43

RED LED

RED LED

R421KR42

RED LED

RED LED

R371KR37

1K

RED LED

RED LED

R391KR39

1K

L

L

4

3.5mm STEREO JACK

3.5mm STEREO JACK

4

L

L

3.5mm STEREO JACK

3.5mm STEREO JACK

Hardware Description

J11J11

1K

1K

1 2

J10J10

1 2

J4J4

1 2

J15

123

TP14TP14

VBUS

17

18

VBUS

C6

0.1UFC60.1UF

J15

USB_5_MINI_AB_SKT

ID

C3

4700 PFC34700 PF

USB_5_MINI_AB_SKT

ID DP DM

TEST1

10

TEST2

8

TxD

7

RxD

6

D-

5

D+

4

EP

21

TP9TP9

TP15TP15

TP18TP18

TP19TP19

TP21TP21

TP22TP22

4S25

TP16TP16

TP17TP17

19

20

DP

DM

J5J5

1 2

TP8TP8

TP6TP6

C1

1.0UFC11.0UF

OUT

15

U2

MIC

3

SPK_L

2

SPK_R

1

TP3TP3

5V D- D+ ID G

5V D- D+ ID G

S1
S3S4

TP13TP13

TP11TP11

TP10TP10

TP2TP2

C2

1.0UFC21.0UF

VDD

11

16

VDD

OUT

ISET

MC34825U2MC34825

VDDIO

INTB12I2C_SDA

I2C_SCL

9

13

14

TP5TP5

VDDIO

TP4TP4

TP12TP12

C7

100PF(optional)

C7

100PF(optional)

ID

C5

2.2uFC52.2uF

VDD_3V3

C4

1.0UFC41.0UF

VDD_5V

TP20TP20

TP27TP27

TP26TP26

TP1TP1

TP7TP7

S2

J19

J19

USB_TYPE_A_FEMALE

USB_TYPE_A_FEMALE

VD-D+G

VD-D+G

S1A1A2A3A4

OUT

VDD_3V3

VDDIO

VDD

VDD_5V

VBUS

1 2

J12J12

J9J9

1 2

VDD_3V3

5

Vout

Vin1ON/OFF

U1

U1

1 2

4

NC

3

V_CON

J13J13

GND

LP2980IM5X-3.3

LP2980IM5X-3.3

2

VDDIO

VDD_5V

J6J6

J7J7

J8J8

1 2

1 2

1 2

R36

4.7k

R36

4.7k

INTB

VDDIO

I2C_SCL

I2C_SDA

23

1

R35

4.7k

R35

4.7k

R38

4.7k

R38

4.7k

R41

4.7k

R41

4.7k

R40

4.7k

R40

4.7k

Q2

FDV303NQ2FDV303N

VDDIO

1

Q1

FDV303NQ1FDV303N

23

Q4

FDV303NQ4FDV303N

J17J17

J16J16

1 2

1 2

23

R44

4.7k

R44

4.7k

1

VDDIO

R45

4.7k

R45

4.7k

TxD

RxD

1

VDD_5V

23

Q3

FDV303NQ3FDV303N

Figure 4. The 34825 Schematic of the KIT34825EPEVME Evaluation Board

KIT34825EPEVME Evaluation Board, Rev. 2.0

Freescale Semiconductor 7

Hardware Description

4.1.5 On-Board LDO and VDD_5V

The evaluation board has a 3.3V LDO on the board. This LDO generates the VDDIO voltage as well as
to generate a reference voltage (3.3V) for the USB charger simulator (see section
information). Unless powered by a different source, the JP13 should always be connected for the VDDIO
supply.

The 3.3V LDO is powered by a 5V supply (VDD_5V) from the standard type-B USB connector. The
VDD_5V supply are also used to supply the 34825 via jumper J12 to the VDD pin during the evaluation.
In addition, the VDD_5V can also be used to generate the 5V supply to the VBUS pin in the mini-USB
connector to simulate various power supplies, together with the D+/D- connection and the ID connection.
Jumper J9 is for this purpose. More details are given in the section

4.2 Remote Control and Accessory Simulator

The remote control simulator contains 13 resistors (R3 to R15) that are corresponding to the 13 supported
keys (see datasheet for more details) and a push button (SW1) to simulate the action of the remote
control. The left side of
to select one ID resistor value by shorting the corresponding jumper in J1 and then to press the push
button SW1. Shorting pin1 and pin2 of the jumper header J1 represents the S0 key. Shorting pin3 and
pin4 of the J1 represents S1 key, and so on.

The right side of Figure 5 shows the schematic of the accessory simulator. Resistor R16 to R34 represent
all supported ID resistors. R16 and R17 are in series with the remote control key resistors to form the
correct ID resistors. Shorting one pair of the headers in J2 is equivalent to connecting one ID resistor to
the ID pin.

The headers of 39 and 40 in J2 are connected to the DP and DM pins of the 34825. Shorting these two
headers is equivalent to short the DP and DM pins. To simulate the attachment of a dedicated charger,
the users can short the 39 and 40 headers first and then short jumper J9 to connect the VDD_5V to the
VBUS pin of the mini-USB connector. Once the J9 are shorted, the 34825 sees a 5V at the VBUS pin and
starts the power supply type identification. The identification result will be a dedicated charger.

Figure 5 shows the detailed schematic. To simulate a key press, the user needs

4.2 for more

4.2.

Resistors R1 and R2 and jumper J3 are for simulating the USB charger. The USB charger requires the
power supply to offer a 0.6V to the DM pin when the DP pin is sourced with a 0.6V. Shorting J3 first and
then J9 creates and equivalent attachment of a USB charger to the mini-USB connector.

The headers in J2 should be left open unless an accessory is being simulated.

4.3 USB-to-I2C Interface

The USB-to-I2C interface consisting of the MCU block and the standard type-B connector enables users
to use the PC as the host controller of the I2C bus. Users can access the I2C register map with the GUI
in the PC and receive the interrupt signal from the 34825. The schematic of the USB-to-I2C interface is
given in
connector is given to connect the evaluation board to the PC. The USB bus voltage is the supply of the
VDD_5V discussed earlier.

8 Freescale Semiconductor

Figure 6. The MCU in the schematic is powered by the USB bus voltage. A standard type-B

KIT34825EPEVME Evaluation Board, Rev. 2.0

VDD_3V3

Hardware Description

ڋڋڋڋڌ
ڋڋڋڌڋ
ڋڋڋڌڌ
ڋڋڌڋڋ
ڋڋڌڋڌ
ڋڋڌڌڋ
ڋڋڌڌڌ
ڋڌڋڋڋ
ڋڌڋڋڌ
ڋڌڋڌڋ
ڋڌڋڌڌ
ڋڌڌڋڋ
ڋڌڌڋڌ

DP

DM

ID

3940
3738
3536
3334
3132
2930
2728
2526
2324
2122
1920
1718
1516
1314
1112
910
78

34
12

J2

J2

R3 2.0KR3 2.0K
R4 604R4 604
R5 604R5 604
R6 806.0R6 806.0
R7 806.0R7 806.0
R8 1.21KR8 1.21K
R9 2.0KR9 2.0K
R10 2.0KR10 2.0K
R11 2.0KR11 2.0K
R12 2.43KR12 2.43K
R13 2.8KR13 2.8K
R14 3.24KR14 3.24K
R15 3.57KR15 3.57K

ID

12

6 5

HDR_2X13

HDR_2X13

34

78
910
1112
1314
1516
1718
1920
2122
2324
2526

J1

J1

1
2

SW1

SW1

DTSHW-67N

DTSHW-67N

3
4

R34 10R34 10

R33 75R33 75
R32 28.7KR32 28.7K
R31 34.0KR31 34.0K
R30 40.2KR30 40.2K
R29 49.9KR29 49.9K
R28 64.9KR28 64.9K
R27 80.6KR27 80.6K
R26 102KR26 102K
R25 121KR25 121K
R24 150KR24 150K
R23 200KR23 200K
R22 255KR22 255K
R21 301KR21 301K
R20 365KR20 365K
R19 442KR19 442K
R18 523KR18 523K
R17 590KR17 590K
R16 976KR16 976K

6 5

HDR_2X20

HDR_2X20

Figure 5. The Schematic for the Remote Control and the Accessory Simulator.

J3J3

1 2

ڋڋڋڋڋ
ڋڋڋڋڋ
ڋڌڌڌڋ
ڋڌڌڌڌ
ڌڋڋڋڋ
ڌڋڋڋڌ
ڌڋڋڌڋ
ڌڋڋڌڌ
ڌڋڌڋڋ
ڌڋڌڌڋ
ڌڋڌڌڌ
ڌڌڋڋڋ
ڌڌڋڋڌ
ڌڌڋڌڋ
ڌڌڋڌڌ
ڌڌڌڋڋ
ڌڌڌڋڌ
ڌڋڌڋڌ
ڌڌڌڌڋ

R2

3.57KR23.57K

0.6V

R1

806.0R1806.0

VDD_5V

1 2
3 4

7 8

9 10
11 12
13 14
15 16

2

34

2

34

1

1

USB_TYPE_B

USB_TYPE_B

J18

J18

HDR_2X8

HDR_2X8

J14

J14

S2
2

-D

-D

3

+D

+D

4

G

G

1

V

V

S1

VDD_5V

R50

C12

C12

22PF

22PF

R50

10M

10M

1 2

Y1

12MHzY112MHz

C9

0.1UFC90.1UF

R49

R49

1.5K

1.5K

R46 27R46 27
R47 27R47 27

C11

C11

22PF

22PF

C10

C10

4.7UF

4.7UF

RST
VPP

65

PTE3
PTA0
PTA1
PTA2
PTA3

VDD_5V

VPP

C8

0.1UFC80.1UF

I2C_SCL

INTB

I2C_SDA

PTE3

TxD

RxD

C15

C15

2.2uF

2.2uF

U3

U3

5

VDD

2

OSC1

3

OSC2

4

VREG

11

IRQ

10

PTC0/TxD

12

PTC1/RxD

18

PTE0/TCLK

7

PTE1/T1CH01

17

PTE2/T2CH01

9

PTE4/D-

8

PTE3/D+

1

VSS

MC908JB16FAE

MC908JB16FAE

VDDA
VREFGA0
VREFGA1

RST

CGMOUT1
CGMOUT2
CGMXFC1
CGMXFC2

PTD0

PTA0/KBA0
PTA1/KBA1
PTA2/KBA2
PTA3/KBA3
PTA4/KBA4
PTA5/KBA5
PTA6/KBA6
PTA7/KBA7

VSSA0
VSSA1

PTA0
PTA1
PTA2
PTA3

RST

C14

C14

0.1UF

0.1UF

VDD_5V

R481KR48

1K

C13

C13

0.1UF

0.1UF

V_CON

DS5

DS5

RED LED

RED LED

C16

C16

4.7UF

4.7UF

VDD_5V

21

30
29
25
32

31
23
27
26

6

22
21
20
19
16
15
14
13

28
24

Figure 6. The MCU Block and I/O of the KIT34825EPEVME Schematic

KIT34825EPEVME Evaluation Board, Rev. 2.0

Freescale Semiconductor 9