w86l488y-ay Winbond Electronics Corp America, w86l488y-ay Datasheet - Page 12

• Manufacturer Part Number: w86l488y-ay
• Description: Winbond Host Interface Sd/sdio/mmc Memory Card Bridge
• Manufacturer: Winbond Electronics Corp America

W86L488AY Pin Descriptions, continued
Crystal Driver (VDD3 powered):
Host Interface Signal (VDDH powered):
47:50
60:64
9:12
PIN
1:5
54
55
22
19
23
20
26
29
16
17
38
45
D15/A0
ADAT3
BDAT3
D[13:9]
NAME
ACMD
BCMD
XCSN
ACLK
BCLK
D[8:4]
D[3:0]
A[4:1]
ACDI
BCDI
HCKI
ACS
BCS
XTO
D14
XTI
TYPE
DIO
DIO
DIO
DIO
DIO
DIO
DIO
DO
DO
DI
DI
DI
DI
Crystal clock input or External clock input,
Crystal clock output. Left this pin open when use external input.
SD/MMC mode:
Data line bit [3] or Card detect.
SDIO mode:
Data line bit [3] or Card detect.
SPI mode:
SD/MMC mode:
Command line.
SDIO mode:
Command line.
SPI mode:
Card data input.
16-bit Mode:
Data bus D15.
Test Mode:
A0 = 1 : Internal register accesses data bus [7:0] to D[15:8].
Card select.
This pin will be tri-state when the command is not driven.
Clock output . This pin will stay at high or low when card clock
is not needed depends on the configuration of Control
Register (A[3:1] = 001) setting.
Host clock input.
Chip select input, host asserts low to enable.
Address input.
A0 = 0 : Internal register accesses data bus [7:0] to D[7:0].
Data bus D14.
Data bus D[13:9].
Data bus D[8:4], D[7:0] is the low byte of the data bus.
Data bus D[3:0].
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DESCRIPTION
Publication Release Date: June 04, 2006
W86L488
Revision 1.21