w86l488 Winbond Electronics Corp America, w86l488 Datasheet - Page 4

• Manufacturer Part Number: w86l488
• Description: Sd/ Sdio/ Mmc Memory Card Bridge
• Manufacturer: Winbond Electronics Corp America

1. GENERAL DESCRIPTION
The W86L488 is a SD/SDIO/MMC interface bridge between microprocessor and SD/SDIO/MMC
device. The data width of microprocessor is 8 or 16-bits. W86L488 supports synchronous or
asynchronous type of host interface. It also supports DMA and Interrupt type of transfer mode to
improve data transfer performance. The signals on the SD bus are captured or driven by W86L488.
W86L488 is monitored and controlled by microprocessor via internal registers. W86L488 fits for most
of IA devices, such as PDA, Cellular Phone, DSC, and MP3 player.
2. FEATURES
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Ordering Information
W86L488Y
W86L488AY
PART NUMBER
Compliant with SD spec. Version 1.01. (Support SDIO)
Compliant with MMC spec. Version 3.2.
Simultaneously access two ports of SD/SDIO/MMC supported. (W86L488AY only)
Support physical layer commands of SD/SDIO/MMC interface.
Support SD/MMC and SPI mode for SD/SDIO/MMC interface.
Support Keitaide-Music MMC card commands in SPI mode.
Support SDIO interrupt and bus suspend/resume operation.
Built-in 128 bytes data buffer for data transmit (send/receive).
Support two types of Host microprocessor Interface access – synchronous and asynchronous.
DMA and Interrupt transfer mode supported.
Host microprocessor Interface support (Such as: Motorola's Dragon Ball series;Intel's Strong
ARM, ARM series; Hitachi's SH2 series; Fujisui's FR30)
Support 8/16 bits data bus of Microprocessor I/F.
Built-in 3.58 to 25MHz crystal driver circuit, support external oscillator or crystal clock.
Operation voltage: 2.7~3.6V for SD/SDIO/MMC, 2.5/3.3V for Host CPU interface.
48/64-pin QFN package.
WINBOND HOST INTERFACE SD/SDIO/MMC
1Port SD/SDIO
2Port SD/SDIO
DESCRIPTION
Preliminary W86L488 Data Sheet
48-PIN QFN
64-PIN QFN
PACKAGE TYPE
- 1 -
MEMORY CARD BRIDGE
Publication Release Date: February 5, 2004
Commercial, 0
Commercial, 0
PRODUCTION FLOW
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Revision 0.82
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