SYNCHRONOUS SERIAL INTERFACE (SSI)
MOTOROLA
PORT C
6 - 77
• Interface to a Variety of Serial Devices, Including:
Codecs (usually without additional logic)
MC145502
MC145503
MC145505
MC145402 (13-bit linear codec)
MC145554 Family of Codecs
MC145532
Serial Peripherals (A/D, D/A)
Most Industry-Standard A/D, D/A
DSP56ADC16 (16-bit linear A/D)
DSP56K to DSP56K Networks
Motorola SPI Peripherals and Processors
Shift Registers
• Interface to Time Division Multiplexed Networks without Additional Logic
• Six Pins:
STD SSI Transmit Data
SRD SSI Receive Data
SCK SSI Serial Clock
SC0 Serial Control 0 (defined by SSI mode)
SC1 Serial Control 1 (defined by SSI mode)
SC2 Serial Control 2 (defined by SSI mode)
• On-chip Programmable Functions Include:
Clock – Continuous, Gated, Internal, External
Synchronization Signals – Bit Length and Word Length
TX/RX Timing – Synchronous, Asynchronous
Operating Modes – Normal, Network, On-Demand
Word Length – 8, 12, 16, 24 Bits
Serial Clock and Frame Sync Generator
• Four Interrupt Vectors:
Receive
Receive with Exception
Transmit
Transmit with Exception
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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