HB28H016/D032/B064/B128MM2
MultiMediaCard Mode Pad Definition
Pin No.
Name
Type*1
Description
1
RSV
NC
No connection
2
CMD
I/O/PP/OD
Command/Response
3
VSS1
S
Ground
4
VCC
S
Power supply
5
CLK
I
Clock
6
V
S
Ground
SS2
7
DAT
I/O/PP
Data
Note: 1. S: power supply; I: input; O: output; PP: push-pull; OD: open-drain; NC: No connection or VIH
DAT
VSS2
CLK
VCC
VSS1
CMD
RSV
enable
enable
Interface driver
MultiMediaCard Mode I/O-drivers
SPI Mode
The Serial Peripheral Interface (SPI) is a general-purpose synchronous serial interface originally found on
certain Motorola microcontrollers. The MultiMediaCard SPI interface is compatible with SPI hosts
Rev.5.0, Jan. 2003, page 5 of 88