Mmc Protocol Block And Schematic Diagrams - Intel PXA27 Series Design Manual

15.4.1.2

MMC Protocol Block and Schematic Diagrams

See Figure 15-1
controller and an MMC device stack. The block diagram shows high-level signal usage and
connectivity when using the MMC communication protocol with MMC devices.
Figure 15-1. MMC Protocol Interface Block Diagram
®
Intel PXA27x Processor Family Design Guide
for the block diagram showing the interface between the MMC/SD/SDIO Card
PXA27x
Processor
MMC/SD/SDIO
Controller
(MMC Protocol)
MMCLK
MMCMD
MMDAT<0>
MMDAT<1> NC
MMDAT<2>/
NC
MMCCS<0>
MMDAT<3>/
NC
MMCCS<1>
MultiMediaCard/SD/SDIO Card Controller
MMC Stack
Clock
CLK
Command
CMD
Response
Write Data
DAT
Read Data
MMC_001_P2
II:15-5