Intel PXA27 Series Design Manual page 8

Contents
14.5.2.1 Signals ............................................................................................II: 14-6
14.5.2.2 Block Diagram.................................................................................II: 14-6
15 MultiMediaCard/SD/SDIO Card Controller..........................................................................II: 15-1
15.1 Overview......................................................................................................................II: 15-1
15.2 Signals .........................................................................................................................II: 15-2
15.3 Layout Notes................................................................................................................II: 15-2
15.4 Modes of Operation Overview .....................................................................................II: 15-4
15.4.1 MMC/SD/SDIO Mode Using MMC Protocol ...................................................II: 15-4
15.4.1.1 MMC Protocol Signals ....................................................................II: 15-4
15.4.1.2 MMC Protocol Block and Schematic Diagrams ..............................II: 15-5
15.4.1.3 MMC Protocol Layout Notes ...........................................................II: 15-6
15.4.2 MMC/SD/SDIO Mode Using SD or SDIO Protocols .......................................II: 15-7
15.4.2.1 SD and SDIO Protocol Signals .......................................................II: 15-7
15.4.2.2 SD and SDIO Protocol Block and Schematic Diagrams .................II: 15-8
15.4.2.3 SD and SDIO Protocol Layout Notes............................................II: 15-10
15.4.3 SPI Mode with MMC, SD Card, and SDIO Card Devices.............................II: 15-11
15.4.3.1 SPI Mode Signals .........................................................................II: 15-11
15.4.3.2 SPI Protocol Block and Schematic Diagrams ...............................II: 15-12
15.4.3.3 SPI Protocol Layout Notes............................................................II: 15-12
16 Baseband Interface ..............................................................................................................II: 16-1
16.1 Overview......................................................................................................................II: 16-1
17 Memory Stick Host Interface ...............................................................................................II: 17-1
17.1 Overview......................................................................................................................II: 17-1
17.2 Signals .........................................................................................................................II: 17-1
17.3 Schematic/Block Diagram............................................................................................II: 17-1
17.4 Layout Notes................................................................................................................II: 17-2
18 Keypad Interface...................................................................................................................II: 18-1
18.1 Overview......................................................................................................................II: 18-1
18.2 Signals .........................................................................................................................II: 18-2
18.3 Block Diagram .............................................................................................................II: 18-3
18.4 Layout Notes................................................................................................................II: 18-4
18.4.1 Recommended Pull-down Resistors...............................................................II: 18-4
18.4.2 Alternate Function During Standby and Sleep Mode......................................II: 18-4
18.4.3 Reduce Power During Standby and Sleep Mode ...........................................II: 18-4
18.4.4 Using the Keypad Signals to Wake-up from Standby and Sleep Mode..........II: 18-4
18.4.5 How to Enable Specific Combinations of Direct Keys ....................................II: 18-4
18.4.6 Interfacing to a Matrix Keypad ........................................................................II: 18-5
18.5 Modes of Operation Overview .....................................................................................II: 18-6
18.5.1 Keypad Matrix and Direct Keys and No Rotary Encoder................................II: 18-6
18.5.1.1 Signals ............................................................................................II: 18-6
18.5.1.2 Block Diagram.................................................................................II: 18-7
18.5.2 Keypad Matrix and Direct Keys with One Rotary Encoder .............................II: 18-8
18.5.2.1 Signals ............................................................................................II: 18-8
18.5.2.2 Block Diagram.................................................................................II: 18-9
18.5.3 Keypad Matrix and Direct Keys with Two Rotary Encoders .........................II: 18-10
18.5.3.1 Signals ..........................................................................................II: 18-10
18.5.3.2 Block Diagram...............................................................................II: 18-11
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Intel PXA27x Processor Family Design Guide