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Multichannel Buffered Serial Port
Table A-28. McSPI Instance Summary
Module Name
Base Address
Size
MCSPI1
0x4809 8000
4KB
MCSPI2
0x4809 A000
4KB
MCSPI3
0x480B 8000
4KB
MCSPI4
0x480B A000
4KB
A.14.1 McSPI Use Guidelines
For the unsupported MCSPI1 module, next guidelines must be followed:
•
Keep MCSPI_SYSCONFIG[4:3] SIDLEMODE = 0x0.
•
Keep MCSPI_SYSCONFIG[2] ENWAKEUP = 0x0.
•
Keep MCSPI_SYSCONFIG[9:8] CLOCKACTIVITY= 0x0.
•
Set MCSPI_SYSCONFIG[0] AUTOIDLE = 0x1.
•
Keep all interrupts masked.
A.15 Multichannel Buffered Serial Port
A.15.1 McBSP Overview
The multichannel buffered serial port (McBSP) provides a full-duplex direct serial interface between
OMAP36xx in CYN package and external devices. There are four McBSP modules (McBSP1, McBSP2,
McBSP3, and McBSP5) in the OMAP36xx in CYN package devices.
The following functions are offered on the die, but are not accessible in the OMAP36xx in CYN package
devices:
•
McBSP4 module
•
mcbsp_clks pin: external clock input, shared by all McBSP modules
•
McBSP1 modes:
–
Transmit-master and receive-slave mode
–
Transmit-slave and receive-master mode
A.15.2 McBSP Environment
A.15.2.1 McBSP Signal Descriptions
The four McBSP modules consist of a data-flow path and a control path connected to external devices by
a serial interface with 4-pin configuration.
describes the McBSP signals. Signals, highlighted in orange are unavailable in OMAP36xx in
CYN package devices. See also the caution following the table.
Table A-29. Input/Output Description
Signal Name
I/O
(2)
Primary
Primary
Reset Value
Control and
Audio Data
Voice Data
(1)
Internal
Function
Data
Signal Name
mcbspi_dr
I
DR
Receiver serial
–
✓
✓
✓
data
mcbspi_dx
I/O
(3)
DX
Transmitter
0
✓
✓
✓
serial data
(4)
(1)
i = 1, 2, 3, 5
(2)
I = Input; O = Output
(3)
I/O in half-duplex, O in full-duplex mode
(4)
Can be both transmitter and receiver serial data when in half duplex mode
3693
SWPU177N – December 2009 – Revised November 2010
OMAP36xx Multimedia Device in CYN Package
Copyright © 2009–2010, Texas Instruments Incorporated
Содержание OMAP36 Series
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Страница 2974: ...2974 UART IrDA CIR SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3054: ...3054 Multichannel SPI SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3462: ...3462 MMC SD SDIO Card Interface SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
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