LM3S3768 Luminary Micro, Inc, LM3S3768 Datasheet - Page 429

• Manufacturer Part Number: LM3S3768
• Description: Lm3s3768 Arm Microcontroller
• Manufacturer: Luminary Micro, Inc

15
15.1
June 02, 2008
Synchronous Serial Interface (SSI)
The Stellaris
is a master or slave interface for synchronous serial communication with peripheral devices that
have either Freescale SPI, MICROWIRE, or Texas Instruments synchronous serial interfaces.
Each 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
®
®
microcontroller includes two Synchronous Serial Interface (SSI) modules. Each SSI
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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LM3S3768 Microcontroller
Transmit/
Receive
Logic
429
SSITx
SSIRx
SSIClk
SSIFss