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S3C2451X RISC MICROPROCESSOR
8
CF CONTROLLER
OVERVIEW
CF controller supports PC card memory/IO mode & True-IDE mode.
CF controller is compatible with CF standard spec. R3.0.
FEATURES
The CF controller features:
The CF controller supports only 1 slot.
The CF controller consists of 2 parts – PC card controller & ATA controller. They are multiplexing from or to PAD
signals. Users have to use the only 1 mode, PC card or True-IDE mode. Default mode is PC card mode. The CF
controller has a top level SFR that has card power enable bit, output port enable bit & mode select (True-IDE or
PC card) bit.
The PC card controller features:
The PC card controller has 2 half-word (16bits) write buffers & 4 half-word (16bits) read buffers.
The PC card controller has 5 word-sized (32bits) Special Function Registers.
–
3 timing configuration registers. (Attribute memory, Common memory, I/O interface)
–
1 status & control configuration register
–
1 interrupt source & mask register
Timing configuration register consists of 3 parts – Setup, Command & Hold.
–
PC card interface has 4 state (IDLE, SETUP, COMMAND & HOLD)
–
Each part of register indicates the operation timing of each state.
The ATA controller features:
The ATA controller is compatible with the ATA/ATAPI-6 standard.
The ATA controller support only PIO mode.
The ATA controller has 30 word-sized (32bits) Special Function Registers.
The ATA controller has 1 FIFO that is 16 x 32bit.
The ATA controller has internal DMA controller (from ATA device to memory or from memory to ATA device).
AHB master (DMA controller) support 8 burst & word size transfer.
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.
CF CONTROLLER
8-1
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