LM3S5632 Luminary Micro, Inc, LM3S5632 Datasheet - Page 415

• Manufacturer Part Number: LM3S5632
• Description: Lm3s5632 Arm Microcontroller
• Manufacturer: Luminary Micro, Inc

15
15.1
June 02, 2008
Synchronous Serial Interface (SSI)
The Stellaris
serial communication with peripheral devices that have either Freescale SPI, MICROWIRE, or Texas
Instruments synchronous serial interfaces.
The Stellaris
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Block Diagram
Figure 15-1. SSI Module Block Diagram
System Clock
Master or slave operation
Support for Direct Memory Access (DMA)
Programmable clock bit rate and prescale
Separate transmit and receive FIFOs, 16 bits wide, 8 locations deep
Programmable interface operation for Freescale SPI, MICROWIRE, or Texas Instruments
synchronous serial interfaces
Programmable data frame size from 4 to 16 bits
Internal loopback test mode for diagnostic/debug testing
SSIPCellID0
SSIPCellID1
SSIPCellID2
SSIPCellID3
DMA Request
Interrupt
Identification Registers
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Synchronous Serial Interface (SSI) is a master or slave interface for synchronous
SSI module has the following features:
SSIPeriphID0
SSIPeriphID1
SSIPeriphID2
SSIPeriphID3
SSIPeriphID4
SSIPeriphID5
SSIPeriphID6
SSIPeriphID7
Control/Status
SSICR0
SSICR1
SSISR
Preliminary
Interrupt Control
Clock Prescaler
DMA Control
SSIDMACTL
SSICPSR
SSIMIS
SSIICR
SSIRIS
SSIDR
SSIIM
RxFIFO
TxFIFO
8 x 16
8 x 16
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LM3S5632 Microcontroller
Transmit/
Receive
Logic
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SSITx
SSIRx
SSIClk
SSIFss