Serial Peripheral Interface; Overview Of Serial Peripheral Interface; Key Features Of Serial Peripheral Interface - Samsung S5PC110 Manual

S5PC110_UM
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SERIAL PERIPHERAL INTERFACE

3.1 OVERVIEW OF SERIAL PERIPHERAL INTERFACE

The Serial Peripheral Interface (SPI) in S5PC110 transfers serial data using various peripherals. SPI includes two
8, 16, 32-bit shift registers to transmit and receive data. During an 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.

3.2 KEY FEATURES OF SERIAL PERIPHERAL INTERFACE

The features of SPI include:
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Full duplex
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8/16/32-bit shift register for TX/RX
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8-bit Prescaler logic
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2 clock sources: PCLK and SPI_EXT_CLK from SYSCON
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Supports 8-bit/16-bit/32-bit bus interface
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Supports the Motorola SPI protocol and National Semiconductor Microwire
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Two independent 32-bits wide transmit and receive FIFOs: depth 64 in port 0 and depth 16 in port 1
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Master-mode and Slave-mode
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Receive-without-transmit operation
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Tx/Rx maximum frequency at up to 50MHz
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