Renesas SH7781 - Manual (Page 1202)

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
Figure 24.1 Block Diagram of MMCIF
24.2 Input/Output Pins
Table 24.1 summarizes the pins of the MMCIF.
Table 24.1 Pin Configuration
Pin Name I/O Function
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.