Texas Instruments OMAP5910 Reference Manual
OMAP5910 Dual-Core Processor
MicroWire Interface
Reference Guide
Literature Number: SPRU686
October 2003
IMPORTANT NOTICE
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections,
modifications, enhancements, improvements, and other changes to its products and services at any
time and to discontinue any product or service without notice. Customers should obtain the latest
relevant information before placing orders and should verify that such information is current and
complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order
acknowledgment.
TI warrants performance of its hardware products to the specifications applicable at the time of sale
in accordance with TI’s standard warranty. Testing and other quality control techniques are used to the
extent TI deems necessary to support this warranty. Except where mandated by government
requirements, testing of all parameters of each product is not necessarily performed.
TI assumes no liability for applications assistance or customer product design. Customers are
responsible for their products and applications using TI components. To minimize the risks associated
with customer products and applications, customers should provide adequate design and operating
safeguards.
TI does not warrant or represent that any license, either express or implied, is granted under any TI
patent right, copyright, mask work right, or other TI intellectual property right relating to any
combination, machine, or process in which TI products or services are used. Information published by
TI regarding third-party products or services does not constitute a license from TI to use such products
or services or a warranty or endorsement thereof. Use of such information may require a license from
a third party under the patents or other intellectual property of the third party, or a license from TI under
the patents or other intellectual property of TI.
Reproduction of information in TI data books or data sheets is permissible only if reproduction is without
alteration and is accompanied by all associated warranties, conditions, limitations, and notices.
Reproduction of this information with alteration is an unfair and deceptive business practice. TI is not
responsible or liable for such altered documentation.
Resale of TI products or services with statements different from or beyond the parameters stated by
TI for that product or service voids all express and any implied warranties for the associated TI product
or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such
statements.
Following are URLs where you can obtain information on other Texas Instruments products and
application solutions:
Products Applications
Amplifiers amplifier.ti.com Audio www.ti.com/audio
Data Converters dataconverter.ti.com Automotive www.ti.com/automotive
DSP dsp.ti.com Broadband www.ti.com/broadband
Interface interface.ti.com Digital Control www.ti.com/digitalcontrol
Logic logic.ti.com Military www.ti.com/military
Power Mgmt power.ti.com Optical Networking www.ti.com/opticalnetwork
Microcontrollers microcontroller.ti.com Security www.ti.com/security
Telephony www.ti.com/telephony
Video & Imaging www.ti.com/video
Wireless www.ti.com/wireless
Mailing Address: Texas Instruments
Post Office Box 655303 Dallas, Texas 75265
Copyright 2003, Texas Instruments Incorporated
About This Manual
This serial synchronous interface can drive two serial external components.
For the external devices, this interface is compatible with the MicroWire
standard and is seen as the master.
Notational Conventions
This document uses the following conventions.
- Hexadecimal numbers are shown with the suffix h. For example, the
Preface
Read This First
following number is 40 hexadecimal (decimal 64): 40h.
Related Documentation From Texas Instruments
The following documents describe the OMAP5910 device and related
peripherals. Copies of these documents are available on the Internet at
www.ti.com. Tip: Enter the literature number in the search box provided at
www.ti.com.
OMAP5910 Dual-Core Processor MPU Subsystem Reference Guide (litera-
ture number SPRU671)
OMAP5910 Dual-Core Processor DSP Subsystem Reference Guide
(literature number SPRU672)
OMAP5910 Dual-Core Processor Memory Interface Traffic Controller
Reference Guide (literature number SPRU673)
OMAP5910 Dual-Core Processor System D MA Controller Reference Guide
(literature number SPRU674)
OMAP5910 Dual-Core Processor LCD Controller Reference Guide (litera-
ture number SPRU675)
OMAP5910 Dual-Core Processor Universal Asynchronous
Receiver/Transmitter ( U A RT) Devices Reference Guide (literature number
SPRU676)
5OMAP5910SPRU686
Trademarks
Related Documentation From Texas Instruments / Trademarks
OMAP5910 Dual-Core Processor Universal Serial Bus (USB) and Frame
Adjustment Counter (FAC) Reference Guide (literature number SPRU677)
OMAP5910 Dual-Core Processor Clock Generation and System Reset
Management Reference Guide (literature number SPRU678)
OMAP5910 Dual-Core Processor General-Purpose Input/Output (GPIO)
Reference Guide (literature number SPRU679)
OMAP5910 Dual-Core Processor MMC/SD Reference Guide (literature
number SPRU680)
OMAP5910 Dual-Core Processor Inter-Integrated Circuit (I2C) Controller
Reference Guide (literature number SPRU681)
OMAP5910 Dual-Core Processor Timer Reference Guide (literature number
SPRU682)
OMAP5910 Dual-Core Processor Inter-Processor Communication
Reference Guide (literature number SPRU683)
OMAP5910 Dual-Core Processor Camera Interface Reference Guide
(literature number SPRU684)
OMAP5905 Dual-Core Processor Multichannel Serial Interface (MCSI)
Reference Guide (literature number SPRU685)
OMAP5910 Dual-Core Processor Micro-Wire Interface Reference Guide
(literature number SPRU686)
OMAP5910 Dual-Core Processor Real-Time Clock (RTC) Reference Guide
(literature number SPRU687)
OMAP5910 Dual-Core Processor HDQ/1-Wire Interface Reference Guide
(literature number SPRU688)
OMAP5910 Dual-Core Processor PWL, PWT, and LED Peripheral
Reference Guide (literature number SPRU689)
OMAP5910 Dual-Core Processor Multi ch an ne l B u f f er ed Seria l Port ( M cB SP )
Reference Guide (literature number SPRU708)
Trademarks
OMAP and the OMAP symbol are trademarks of Texas Instruments.
6 OMAP5910 SPRU686
Contents
Contents
1 MicroWire Interface 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 MicroWire Registers 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Protocol Description 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 Example of Protocol Using a Serial EEPROM (XL93LC66) 21. . . . . . . . . . . . . . . . . . . . . . . .
1.3.1 Read Cycle 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3.2 Write Cycle 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4 Example of Protocol Using an LCD Controller (COP472-3) 23. . . . . . . . . . . . . . . . . . . . . . . .
1.4.1 Loading Sequence 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5 Example of Protocol Using the Autotransmit Mode 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.6 Example of the Autotransmit Mode With DMA Support 26. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figures
1 Block Diagram 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Behavior of a X25C02 EEPROM Read Cycle 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Behavior of a XL93LC66 EEPROM Read Cycle 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Read Cycle in the Autotransmit Mode 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tables
1 MicroWire Registers 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Transmit-Data Register (TDR) 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Receive-Data Register (RDR) 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Control-and-Status Register (CSR) 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Setup Register 1 (SR1) 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 Setup Register 2 (SR2) 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 Setup Register 3 (SR3) 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8 Setup Register 4 (SR4) (Read/Write) 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 Setup Register 5 (SR5) (Read/Write) 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7SPRU686
8 SPRU686
1 MicroWire Interface
This serial synchronous interface can drive two serial external components.
For the external devices, this interface is compatible with the MicroWire
standard and is seen as the master (see Figure 1).
A transmit DMA mode is available.
Figure 1. Block Diagram
MicroWire Interface
Clock register
MPUXOR_CK
IPB
Clock
enable
Setup registers
Control−and−status
register
Clock
divider
UWIRE.CS[3:0]
1.1 MicroWire Registers
The starting address in the peripheral range (hex) is FFFB:3000
Table 1 lists the MicroWire registers. Table 2 through Table 9
describe the individual registers.
Control
logic
2
UWIRE.SCLK
DMA_REQ to system DMA_REQ[6:0]
Inth lvl2 (2,3) - edge
Transmit data register
(16 bits)
Receive data register
(16 bits)
UWIRE.SDO
UWIRE.SDI
Table 1. MicroWire Registers
Register Description R/W Size Address Offset
TDR Transmit data register W 16 bits FFFB:3000 0x00
RDR Receive data register R 16 bits FFFB:3000 0x00
9MicroWire InterfaceSPRU686
MicroWire Interface
Table 1. MicroWire Registers (Continued)
Register OffsetAddressSizeR/WDescription
CSR Controland status register R/W 16 bits FFFB:3000 0x04
SR1 Setup register 1 R/W 16 bits FFFB:3000 0x08
SR2 Setup register 2 R/W 16 bits FFFB:3000 0x0C
SR3 Setup register 3 R/W 16 bits FFFB:3000 0x10
SR4 Setup register 4 R/W 16 bits FFFB:3000 0x14
SR5
Setup register 5 R/W 16 bits FFFB:3000 0x18
Table 2. Transmit-Data Register (TDR)
Bits Field Description
15−0 TD Data to transmit Undefined
Whatever its size, the word must be aligned on the most significant bit (MSB)
side.
Note:
The MSB (bit 15) is the first transmitted bit.
Reset
Value
Table 3. Receive-Data Register (RDR)
Bits Field Description
15−0 RD Received data Undefined
Whatever its size, the word is aligned on the least significant bit (LSB) side.
Note:
The LSB (bit 0) is the last received bit.
MicroWire Interface10 SPRU686
Reset
Value
Loading...