LM3S301 Luminary Micro, Inc, LM3S301 Datasheet - Page 263

• Manufacturer Part Number: LM3S301
• Description: Lm3s301 Arm Microcontroller
• Manufacturer: Luminary Micro, Inc

13
13.1
Figure 13-1. SSI Module Block Diagram
July 5, 2006
Synchronous Serial Interface (SSI)
The Stellaris Synchronous Serial Interface (SSI) 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.
The Stellaris SSI has the following features:
Block Diagram
SSIPCellID0
SSIPCellID1
SSIPCellID2
SSIPCellID3
System Clock
Master or slave operation
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
Interrupt
Identification Registers
SSIPeriphID 0
SSIPeriphID 1
SSIPeriphID 2
SSIPeriphID 3
Control / Status
SSICR0
SSICR1
SSISR
SSIPeriphID 4
SSIPeriphID 5
SSIPeriphID 6
SSIPeriphID 7
Preliminary
Interrupt Control
Prescaler
SSICPSR
Clock
SSIMIS
SSIICR
SSIDR
SSIRIS
SSIIM
RxFIFO
TxFIFO
8 x 16
8 x 16
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LM3S301 Data Sheet
Transmit /
Receive
Logic
SSITx
SSIRx
SSIFss
SSIClk
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