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
Table 8. SD/SDIO Card Using GPIOs for Level Shifting (continued)
SIGNAL NAME
PIN PIN PIN
OR PIN FUNCTION
NO. NAME TYPE
(CONNECTION)
A3 4DIR DAT3-dir.h Direction control for 4A/4B Input
B3 1A DAT0.h Data bit 1 connected to host. Referenced to V
CCA
. I/O
C3 Depopulated ball
D3 56DIR I/O01-dir.h Direction control for 5A/5B and 6A/6B. Referenced to V
CCA
. Tie to V
CCA
if unused. Input
E3 GND GND Ground
F3 12A O5.h General-purpose output connected to host. Referenced to V
CCA
. Output
G3 11A I4.h General-purpose input connected to host. Referenced to V
CCA
. Input
A4 2DIR DAT1-dir.h Direction control for 2A/2B connected to host Input
B4 1DIR DAT0-dir.h Direction control for 1A/1B connected to host Input
C4 3DIR DAT2-dir.h Direction control for 3A/3B connected to host Input
D4 GND GND Ground
Card select from host. Active low. When CS0 = high, 1A, 2A, 3A, 4A, 1B, 2B, 3B, 4B, 9A,
E4 CS0 CS0.h Input
9B, and 10A2 are placed in Hi Z, and 10B1 is low.
F4 13A I6.h General-purpose input connected to host. Referenced to V
CCA
. Input
G4 CS1 (tie-low) Card select. Tie to GND for proper operation. Input
A5 MODE1 (tie-low) Input
MODE1, MODE0 determine mode of operation (see Table 1).
Tie MODE0 to V
CCA
. Tie MODE1 to GND.
B5 MODE0 (tie-high) Input
C5 GND GND Ground
D5 4B DAT3 Data bit 4 connected to card. Referenced to V
CCB0
. I/O
E5 GND GND Ground
F5 7B I/O2 General-purpose I/O. Referenced to V
CCB1
. I/O
G5 8B I/O3 General-purpose I/O. Referenced to V
CCB1
. I/O
A6 10B1 CLK Clock signal connected to card Output
B6 9B1 CMD Command signal connected to card Output
C6 2B DAT1 Data bit 2 connected to card. Referenced to V
CCB0
. I/O
D6 11B O4 General-purpose output. Referenced to V
CCB1
. Output
E6 10B2 O6 General-purpose output. Referenced to V
CCB1
. Output
F6 5B I/O0 General-purpose I/O. Referenced to V
CCB1
. I/O
G6 6B I/O1 General-purpose I/O. Referenced to V
CCB1
. I/O
A7 V
CCB0
V
CCB0
B-port supply voltage. V
CCB0
powers 1B, 2B, 3B, 4B, 9B1, and 10B1. Power
B7 1B DAT0 Data bit 1 connected to card. Referenced to V
CCB0
. I/O
C7 3B DAT2 Data bit 3 connected to card. Referenced to V
CCB0
. I/O
D7 12B I5 General-purpose input. Referenced to V
CCB1
. Input
E7 9B2 DNU I/O pin not used in this mode. Leave unconnected. I/O
F7 14B DNU Open-drain output not used in this mode. Leave unconnected. Output
G7 V
CCB1
V
CCB1
B-port supply voltage. V
CCB1
powers 5B, 6B, 7B, 8B, 9B2, 10B2, 11B, 12B, and 14B. Power
18
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