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SN74AVCA406EZXYR 数据表(PDF) 3 Page - Texas Instruments

部件名 SN74AVCA406EZXYR
功能描述  MMC AND SD CARD VOLTAGE-TRANSLATION TRANSCEIVER
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

SN74AVCA406EZXYR 数据表(HTML) 3 Page - Texas Instruments

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SN74AVCA406E
MMC AND SD CARD VOLTAGE-TRANSLATION TRANSCEIVER
SCES659C – OCTOBER 2007 – REVISED MARCH 2008
PIN DESCRIPTION
ZQS
ZXY
NAME
FUNCTION
TYPE
BALL NO.
BALL NO.
A1
B4
DAT2A
Data bit 3 connected to host. Referenced to VCCA.
I/O
A2
B5
CMD-dir
Direction control for command bit (CMDA/CMDB)
Input
A3
C5
DAT0-dir
Direction control for DAT0A/DAT0B
Input
A4, C2
RSV
Reserved (for possible future functionality). Leave unconnected.
A5
C5
DAT2B
Data bit 3 connected to memory card. Includes a 70-k
Ω pullup resistor to VCCB.
I/O
B1
A4
DAT3A
Data bit 4 connected to host. Referenced to VCCA.
I/O
B2
Depopulated ball
B3
A5
VCCA
A-port supply voltage. VCCA powers all A-port I/Os and control inputs.
Power
B4
D5
VCCB
B-port supply voltage. VCCB powers all B-port I/Os.
Power
B5
D4
DAT3B
Data bit 4 connected to memory card. Includes a 470-k
Ω pulldown resistor to VCCB.
I/O
C1
A3
CLKA
Clock signal connected to host. Referenced to VCCA.
Input
C3
B3
GND
Ground
C4
C3
GND
Ground
C5
D3
CLKB
Clock signal connected to memory card. Referenced to VCCB.
Output
D1
B2
DAT0A
Data bit 1 connected to host. Referenced to VCCA.
I/O
D2
B1
CMDA
Command bit connected to host. Referenced to VCCA.
I/O
Connected to card detect on the mechanical connector.
D3
CD
Output
CD has an internal 100-k
Ω pullup resistor to VCCA.
D4
C2
CMDB
Command bit connected to memory card. Includes a 15-k
Ω pullup resistor to VCCB.
I/O
D5
D2
DAT0B
Data bit 1 connected to memory card. Includes a 70-k
Ω pullup resistor to VCCB.
I/O
E1
A2
DAT1A
Data bit 2 connected to host. Referenced to VCCA.
I/O
Clock feedback to host for resynchronizing data. Used in OMAP processors. Leave
E2
A1
CLK-f
Output
unconnected if not used.
E3
C1
DAT123-dir
Direction control for DAT1A/B, DAT2A/B, and DAT3A/B
Input
Connected to write protect on the mechanical connector.
E4
WP
Output
WP has an internal 100-k
Ω pullup resistor to VCCA
E5
D1
DAT1B
Data bit 2 connected to memory card. Includes a 70-k
Ω pullup resistor to VCCB.
I/O
Copyright © 2007–2008, Texas Instruments Incorporated
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