General Description
The GL811USB is a highly-compatible, low cost USB 2.0 to ATA / ATAPI bridge controller, which integrates Genesys Logic own design high speed UTMI (USB 2.0 Transceiver Macrocell Interface) transceiver.
As a one-chip solution which complies with Universal Serial Bus specification rev. 2.0 and ATA / ATAPI-6 specification rev 1.0, the GL811USB can support various kinds of ATA / ATAPI device. There are totally 4 endpoints in the GL811USB controller, Control (0), Bulk In (1), Bulk Out (2), and Interrupt (3). By complies with the USB Storage Class specification ver.1.0 (Bulk only protocol), the GL811USB can support not only plug and play but also Windows XP/ 2000/ ME default driver.
The GL811USB uses 12MHz crystal and slew-rate controlled pads to reduce the EMI issue. With 48-pin LQFP (9mmX9mm) package, the GL811USB is the best cost/ performance solution to fit different situations in the USB 2.0 high speed storage class applications such as Hard Disk, CD-ROM, CD-R / RW and DVD-ROM.

FEATUREs
● Complies with Universal Serial Bus specification rev. 2.0.
● Complies with ATA/ATAPI-6 specification rev 1.0.
● Complies with USB Storage Class specification ver.1.0. (Bulk only protocol)
● Operating system supported: Win XP/ 2000/ ME/ 98/ 98SE; Mac OS 9.X/ X.
● Supports 4 endpoints: Control (0) / Bulk Read (1) / Bulk Write (2) / Interrupt (3).
● 64 / 512 bytes Data Payload for full / high speed Bulk Endpoint.
● Supports 8-bit/16-bit Standard PIO mode interface.
● Supports 16-bit Multiword DMA mode and Ultra DMA mode interface (Ultra 33 / 66 / 100).
● Embedded USB 2.0 UTMI transceiver.
● Embedded 7.5 MIPS RISC CPU.
● ROM size: 4k words; RAM size: 128 bytes.
● Supports Power Down mode and USB suspend indicator.
● Supports USB 2.0 TEST mode features.
● 12MHz external clock to provide better EMI3.3V power input.
● 5V tolerance pad for IDE interface.
● Supports Wakeup ability.
● Available in 48-pin LQFP (9 mm * 9mm) package.