Datasheet

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SN74AVCA406
MMC, SD CARD, Memory Stick, SmartMedia, AND xD-Picture Card
± 15-kV ESD-PROTECTED VOLTAGE-TRANSLATION TRANSCEIVER
SCES615H – OCTOBER 2004 – REVISED JANUARY 2007
Configuration 1c - Interfacing With SD/SDIO Card or MMC
(SPI Mode)
Table 4. SD/SDIO Card or MMC
SIGNAL NAME
PIN PIN PIN
OR PIN FUNCTION
NO. NAME TYPE
(CONNECTION)
A1 V
CCA
V
CCA
A-port supply voltage. V
CCA
powers all A-port I/Os and control inputs. Power
B1 10A1 SCLK.h Serial clock signal from host Input
Serial data in (master out slave in) connected to host. Connect 9DIR to V
CCA
to make 9A
C1 9A DI.h I/O
an input.
D1 9DIR (tie-high) Direction control for 9A/9B. Tie high to make 9A an input and 9B an output. Input
E1 78DIR (tie-high) Direction control for 7A/7B and 8A/8B. Not used in this mode. Tie to V
CCA
. Input
F1 7A (tie-low) I/O pin not used in this mode. Tie to GND. I/O
G1 V
CCA
V
CCA
A-port supply voltage. V
CCA
powers all A-port I/Os and control inputs. Power
A2 2A CS.h Card select connected to host. Connect 2DIR to V
CCA
to make 2A an input. I/O
B2 3A (tie-low) I/O pin not used in this mode. Tie to GND. I/O
C2 10A2 DNU Clock feedback to host. Not used in this mode. Leave unconnected. Output
D2 4A (tie-low) I/O pin not used in this mode. Tie to GND. I/O
E2 6A (tie-low) I/O pin not used in this mode. Tie to GND. I/O
F2 8A (tie-low) I/O pin not used in this mode. Tie to GND. I/O
G2 5A (tie-low) I/O pin not used in this mode. Tie to GND. I/O
8
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