LM3S101-CRN20-XNPT Luminary Micro, Inc., LM3S101-CRN20-XNPT Datasheet - Page 218

• Manufacturer Part Number: LM3S101-CRN20-XNPT
• Description: Microcontroller
• Manufacturer: Luminary Micro, Inc.

12
12.1
Figure 12-1.
March 22, 2006
System Clock
Interrupt
Peripheral ID
SSIPeriphID0
SSIPeriphID7
.
.
.
Synchronous Serial Interface (SSI)
The Synchronous Serial Interface (SSI) is a master or slave interface for synchronous serial
communication with peripheral devices that have either Freescale SPI, National Semiconductor
MICROWIRE, or Texas Instruments synchronous serial interfaces.
The Stellaris SSI has the following features:
Block Diagram
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, National Semiconductor MICROWIRE,
or Texas Instruments synchronous serial interfaces
Programmable data frame size from 4 to 16 bits
Internal loopback test mode for diagnostic/debug testing
SSI Block Diagram
Control / Status
SSIPCellID0
SSIPCellID1
SSIPCellID2
SSIPCellID3
Prime Cell
SSICR0
SSICR1
SSISR
Interrupt Control
Prescaler
SSICPSR
Clock
SSIMIS
SSIDR
SSIRIS
SSIICR
Preliminary
SSIIM
TxFIFO
RxFIFO
8 x 16
8 x 16
.
.
.
.
.
.
Transmit/
LM3S101 Data Sheet
Receive
Logic
SSITx
SSIRx
SSICLK
SSIFss
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