GL422/GL423 USB 2.0 +SD/MMC-controller Combo Solution

©2000-2006 Genesys Logic Inc. - All rights reserved.

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CHAPTER 2

FEATURES

2.1 USB 2.0 Interface

• Complies with Universal Serial Bus Specification Version 2.0

• Complies with USB Mass Storage Class Specification Version 1.0

• Integrated USB 2.0 Transceiver Macro-cell (UTM), Serial Interface Engine (SIE), Build-in

power-on reset (POR) and low-voltage detector (LVD)

• Supports one USB device address and up to 5 endpoints, including one control, one interrupt and

2 bulk IN/OUT endpoint pairs

• Embedded 8051 micro-controller operates at 60MHz clock

• 64 / 512 bytes Data Payload for full / high speed Bulk Endpoint

• Supports USB 2.0 TEST mode features

2.2 SD Host Interface

• Complies with SD Specification Version 1.1

• Backward compatible with SD Specification, Version 1.0

• Supports SPI mode and CPRM functions

• Supports clock rate up to 25 MHZ for SD1.0

• Supports clock rate up to 52MHz for SD1.1

• Buffers for multi-block flash memory programming

• DMA operation between buffers and flash memory

• Supports automatic CRC16 generation and verification on DATA 3-0

2.3 MMC Host Interface

• Complies with MultiMediaCard System Specification, Version 4.0

• Backward compatible with MultiMediaCard System Specification, Version 3.3

• Supports SPI mode and CPRM functions

• Supports clock rate up to 25 MHZ for MMC 3.3

• Supports clock rate up to 52MHz for MMC 4.0

• Buffers for multi-block flash memory programming

• DMA operation between buffers and flash memory

• Supports automatic CRC16 generation and verification on DATA 7-0