參數(shù)資料
型號(hào): SN74AVCA406GQCR
廠商: Texas Instruments, Inc.
英文描述: MMC SD CARD MEMORY STICK SMARTMEDIA AND XD PICTURE CARD 15KV ESD PROTECTED VOLTAGE TRANSLATION TRANSCEIVER
中文描述: MMC中記憶棒SD卡SmartMedia和xD圖像卡15KV靜電保護(hù)電壓轉(zhuǎn)換收發(fā)器
文件頁(yè)數(shù): 24/51頁(yè)
文件大?。?/td> 1435K
代理商: SN74AVCA406GQCR
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SCES615B – OCTOBER 2004 – REVISED DECEMBER 2004
24
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Table 8. SD/SDIO Card Using GPIOs for Level Shifting
PIN
NO.
PIN
NAME
SIGNAL NAME
OR
(CONNECTION)
PIN FUNCTION
PIN
TYPE
A1
VCCA
10A1
VCCA
CLK.h
A-port supply voltage. VCCA powers all A-port I/Os and control inputs.
Clock signal from host
Power
B1
Input
C1
9A
CMD.h
Command signal connected to host
I/O
D1
9DIR
CMD-dir.h
Direction control for 9A/9B connected to host
Input
E1
78DIR
I/O23-dir.h
Direction control for 7A/7B and 8A/8B. Connected to host. Tie to VCCA if unused.
General-purpose I/O. Referenced to VCCA. Tie to VCCA or GND if unused.
A-port supply voltage. VCCA powers all A-port I/Os and control inputs.
Data bit 2 connected to host. Referenced to VCCA.
Data bit 3 connected to host. Referenced to VCCA.
Clock feedback to host for resynchronizing data. Used in OMAP processors. Optional on
other processors. Leave unconnected if not used.
Input
F1
7A
I/O2.h
I/O
G1
VCCA
2A
VCCA
DAT1.h
Power
A2
I/O
B2
3A
DAT2.h
I/O
C2
10A2
CLK-f.h
Output
D2
4A
DAT3.h
Data bit 4 connected to host. Referenced to VCCA.
General-purpose I/O. Referenced to VCCA. Tie to VCCA or GND if unused.
General-purpose I/O. Referenced to VCCA. Tie to VCCA or GND if unused.
General-purpose I/O. Referenced to VCCA. Tie to VCCA or GND if unused.
Direction control for 4A/4B
I/O
E2
6A
I/O1.h
I/O
F2
8A
I/O3.h
I/O
G2
5A
I/O0.h
I/O
A3
4DIR
DAT3-dir.h
Input
B3
1A
DAT0.h
Data bit 1 connected to host. Referenced to VCCA.
I/O
C3
Depopulated ball
D3
56DIR
I/O01-dir.h
Direction control for 5A/5B and 6A/6B. Referenced to VCCA. Tie to VCCA if unused.
Ground
Input
E3
GND
GND
F3
12A
O5.h
General-purpose output connected to host. Referenced to VCCA.
General-purpose input connected to host. Referenced to VCCA.
Direction control for 2A/2B connected to host
Output
G3
11A
I4.h
Input
A4
2DIR
DAT1-dir.h
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
E4
CS0
CS0.h
Card select from host. Active low. When CS0 = high, 1A, 2A, 3A, 4A, 1B, 2B, 3B, 4B, 9A, 9B,
and 10A2 are placed in Hi Z and 10B1 is low.
Input
F4
13A
I6.h
General-purpose input connected to host. Referenced to VCCA.
Card select. Tie to GND for proper operation.
Input
G4
CS1
(tie-low)
Input
A5
MODE1
(tie-low)
MODE1, MODE0 determine mode of operation (see Table 1). Tie MODE0 to VCCA. Tie
MODE1 to GND.
Input
B5
MODE0
(tie-high)
Input
C5
GND
GND
Ground
D5
4B
DAT3
Data bit 4 connected to card. Referenced to VCCB0.
Ground
I/O
E5
GND
GND
F5
7B
I/O2
General-purpose I/O. Referenced to VCCB1.
General-purpose I/O. Referenced to VCCB1.
Clock signal connected to card
I/O
G5
8B
I/O3
I/O
A6
10B1
CLK
Output
B6
9B1
CMD
Command signal connected to card
Output
C6
2B
DAT1
Data bit 2 connected to card. Referenced to VCCB0.
I/O
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