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PRELIMINARY
S3C6400X RISC MICROPROCESSOR
SPI CONTROLLER
29-1
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
29
SPI
OVERVIEW
The Serial Peripheral Interface (SPI) can interface the serial data transfer. SPI includes two 8, 16, 32-bit shift
registers for transmission and receiving, respectively. During SPI transfer, data is simultaneously transmitted
(shifted out serially) and received (shifted in serially). SPI supports the protocols for National Semiconductor
Microwire and Motorola Serial Peripheral Interface.
FEATURES
The SPI supports the following features:
z
Full
duplex
z
8/16/32-bit shift register for TX/RX
z
8-bit prescale logic
z
3 clock source
z
8bit/16bit/32bit bus interface
z
The Motorola SPI protocol and National Semiconductor Microwire
z
Two independent transmit and receive FIFOs, each 16 samples deep by 32-bits wide
z
Master-mode and Slave-mode
z
Receive-without-transmit
operation