MMC, SD CARD, Memory Stick, SmartMedia, AND xD-Picture Card
±15-kV
ESD-PROTECTED VOLTAGE-TRANSLATION TRANSCEIVER
SCES615H – OCTOBER 2004 – REVISED JANUARY 2007
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Configuration 1c - Interfacing With SD/SDIO Card or MMC
(SPI Mode)
Table 4. SD/SDIO Card or MMC
PIN
NO.
A1
B1
C1
D1
E1
F1
G1
A2
B2
C2
D2
E2
F2
G2
PIN
NAME
V
CCA
10A1
9A
9DIR
78DIR
7A
V
CCA
2A
3A
10A2
4A
6A
8A
5A
SIGNAL NAME
OR
(CONNECTION)
V
CCA
SCLK.h
DI.h
(tie-high)
(tie-high)
(tie-low)
V
CCA
CS.h
(tie-low)
DNU
(tie-low)
(tie-low)
(tie-low)
(tie-low)
Serial clock signal from host
Serial data in (master out slave in) connected to host. Connect 9DIR to V
CCA
to make 9A
an input.
Direction control for 9A/9B. Tie high to make 9A an input and 9B an output.
Direction control for 7A/7B and 8A/8B. Not used in this mode. Tie to V
CCA
.
I/O pin not used in this mode. Tie to GND.
A-port supply voltage. V
CCA
powers all A-port I/Os and control inputs.
Card select connected to host. Connect 2DIR to V
CCA
to make 2A an input.
I/O pin not used in this mode. Tie to GND.
Clock feedback to host. Not used in this mode. Leave unconnected.
I/O pin not used in this mode. Tie to GND.
I/O pin not used in this mode. Tie to GND.
I/O pin not used in this mode. Tie to GND.
I/O pin not used in this mode. Tie to GND.
PIN FUNCTION
A-port supply voltage. V
CCA
powers all A-port I/Os and control inputs.
PIN
TYPE
Power
Input
I/O
Input
Input
I/O
Power
I/O
I/O
Output
I/O
I/O
I/O
I/O
8
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