W86L488AY WINBOND [Winbond], W86L488AY Datasheet - Page 7

• Manufacturer Part Number: W86L488AY
• Description: SD/ SDIO/ MMC MEMORY CARD BRIDGE
• Manufacturer: WINBOND [Winbond]

4. PIN DESCRIPTIONS
4.1 W86L488Y Pin Descriptions
SD/SDIO/MMC Interface (VDD3 powered):
PIN
21
22
15
16
17
20
DAT0/CDO
DAT1/IRQ
DAT3/CS
CMD/CDI
DAT2
NAME
CLK
DO/DI
DO/DI
DO/DI
DO/DI
DO/DI
TYPE
DO
SD/MMC mode:
Data line bit 0 signal for SD/SDIO card, data signal for MMC
card.
SPI mode:
Card data output in SPI mode.
SD/MMC mode:
Data line bit 1 signal for SD/SDIO card or interrupt request for
SDIO.
SPI mode:
No use.
SD/MMC mode:
Data line bit 2 signal for SD/SDIO card or read wait for SDIO.
SPI mode:
No use.
SD/MMC mode:
Data line bit 3 or Card detect for SD/SDIO card.
SPI mode:
Card select.
SD/MMC mode:
Command response for SD/SDIO card or MMC card.
SPI mode:
Card data input.
This pin will tri-state when the command is not driven.
Clock output signal for SD/SDIO card or MMC card. This pin
will stay at high or low when card clock is not needed depends
on the state of CKDH bit setting.
- 4 -
Publication Release Date: February 5, 2004
DESCRIPTION
Preliminary W86L488
Revision 0.82