User's Manual

Table Of Contents
xiv S3C2450X RISC MICROPROCESSOR
Table of Contents (Continued)
Chapter 20 HS_SPI Controller
1 Overview....................................................................................................................................................20-1
2 Features ....................................................................................................................................................20-1
3 Signal Descriptions....................................................................................................................................20-2
4 Operation...................................................................................................................................................20-2
4.1 Operation Mode ...............................................................................................................................20-3
4.2 FIFO Access ....................................................................................................................................20-3
4.3 Trailing Bytes in the Rx FIFO...........................................................................................................20-3
4.4 Packet Number Control ...................................................................................................................20-3
4.5 NCS Control.....................................................................................................................................20-3
4.6 HS_SPI Transfer Format .................................................................................................................20-4
5 Special Function Register Descriptions ....................................................................................................20-5
5.1 Setting Sequence of Special Function Register ..............................................................................20-5
5.2 Special Function Register................................................................................................................20-6
Chapter 21 SD/MMC Host Controller
1 Overview....................................................................................................................................................21-1
2 Features ....................................................................................................................................................21-1
3 Block Diagram ...........................................................................................................................................21-2
4 Sequence ..................................................................................................................................................21-3
4.1 SD Card Detection Sequence..........................................................................................................21-3
4.2 SD Clock Supply Sequence.............................................................................................................21-4
4.3 SD Clock Stop Sequence ................................................................................................................21-5
4.4 SD Clock Frequency Change Sequence.........................................................................................21-5
4.5 SD Bus Power Control Sequence....................................................................................................21-6
4.6 Change Bus Width Sequence..........................................................................................................21-7
4.7 Timeout Setting for DAT Line ..........................................................................................................21-8
4.8 SD Transaction Generation .............................................................................................................21-8
4.9 SD Command Issue Sequence .......................................................................................................21-9
4.10 Command Complete Sequence.....................................................................................................21-10
4.11 Transaction Control with Data Transfer Using DAT Line ..............................................................21-12
4.12 Abort Transaction...........................................................................................................................21-16
5 SDI Special Registers ...............................................................................................................................21-17
5.1 Configuration Register Types ..........................................................................................................21-17
5.2 SDMA System Address Register.....................................................................................................21-18
5.3 Block Size Register..........................................................................................................................21-19
5.4 Block Count Register .......................................................................................................................21-21
5.5 Argument Register ...........................................................................................................................21-22
5.6 Transfer Mode Register ...................................................................................................................21-23
5.7 Command Register..........................................................................................................................21-25
5.8 Response Register ..........................................................................................................................21-27
5.9 Buffer Data Port Register.................................................................................................................21-29
5.10 Present State Regis
ter
...................................................................................................................21-30
5.11 Host Control Register ....................................................................................................................21-36
5.12 Power Control Register..................................................................................................................21-37