LM3S1960 Luminary Micro, Inc, LM3S1960 Datasheet - Page 306

• Manufacturer Part Number: LM3S1960
• Description: Lm3s1960 Arm Microcontroller
• Manufacturer: Luminary Micro, Inc

Synchronous Serial Interface (SSI)
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13.1
13.2
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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 13-1. SSI Module Block Diagram
Functional Description
The SSI performs serial-to-parallel conversion on data received from a peripheral device. The CPU
accesses data, control, and status information. The transmit and receive paths are buffered with
SSIPCellID0
SSIPCellID1
SSIPCellID2
SSIPCellID3
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
System Clock
Interrupt
Identification Registers
®
®
microcontroller includes two Synchronous Serial Interface (SSI) modules. Each SSI
SSIPeriphID0
SSIPeriphID1
SSIPeriphID2
SSIPeriphID3
SSI module has the following features:
Control / Status
SSICR0
SSICR1
SSISR
SSIPeriphID4
SSIPeriphID5
SSIPeriphID6
SSIPeriphID7
Preliminary
Interrupt Control
Prescaler
SSICPSR
Clock
SSIDR
SSIMIS
SSIRIS
SSIICR
SSIIM
RxFIFO
TxFIFO
8 x 16
8 x 16
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July 25, 2008
Transmit/
Receive
Logic
SSITx
SSIRx
SSIFss
SSIClk