Renesas SH7781 用户手册

24.   Multimedia Card Interface (MMCIF) 

Rev.1.00  Jan. 10, 2008  Page 1172 of 1658 
REJ09B0261-0100 

 

Figure 24.1 shows a block diagram of the MMCIF. 

MMCDAT

MMCCMD

MMCCLK

MMCIF

FIFO

FSTAT
TRAN
ERR
FRDY

Peripheral bus

Peripheral bus interface

Data transmission/

reception control

Command 

transmission/

response

reception control

Interrupt control

MMC mode control

Card clock

generator

Port

 

Table 24.1 summarizes the pins of the MMCIF. 

MMCCLK Input/Output 

Card 

clock 

output 

MMCCMD Input/Output 

Command output/response input 

MMCDAT Input/Output 

Data 

input/output 

Note: For 

insertion/detachment 

of a card or for signals switching over between open-drain and 

CMOS modes, use ports of this LSI.