LG -P970 Service Manual page 78

3.12.2.8 McSPI
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The multichannel serial port interface is a master/slave synchronous serial bus.
The McSPI instances include the following main features:
• Serial clock with programmable frequency, polarity, and phase for each channel
• Wide selection of SPI word lengths ranging from 4 bits to 32 bits
• Up to four master channels or single channel in slave mode
LGE Internal Use Only • Master multichannel mode:
– Full duplex/half duplex
– Transmit-only/receive-only/transmit-and-receive modes
TI Confidential — NDA Restrictions
Figure 20-1. Multichannel Modules SPi1, SPi2, SPi3, and SPi4
Device
L4 interconnect
MPU SS
INT
System
DMA
PRCM
L4 interconnect
MPU SS
INT
System DMA
PRCM
L4 interconnect
MPU SS
INT
System
DMA
PRCM
Multichannel
spi1_clk
SPI1 I/F
spi1_simo
spi1_somi
spi1_cs0
SPI1_IRQ
spi1_cs1
spi1_cs2
spi1_cs3
SPI1_DMA_RX[0,3]
SPI1_DMA_TX[0,3]
SPI1_FCLK
SPI1_SWAKEUP
Multichannel
spim_clk
SPIm I/F
spim_simo
m=[2,3]
spim_somi
spim_cs0
SPIn_IRQ
spim_cs1
SPIn_DMA_RX[0,3]
SPIn_DMA_TX[0,3]
SPIn_FCLK
SPIn_SWAKEUP
Multichannel
spi4_clk
SPI4 I/F
spi4_simo
spi4_somi
spi4_cs0
SPI4_IRQ
SPI4_DMA_RX[0]
SPI4_DMA_TX[0]
SPI4_FCLK
SPI4_SWAKEUP
mcspi-001
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3. TECHNICAL BRIEF
McSPI Overview
Only for training and service purposes