JM20335 Overview
The JM20335 is single chip solution to bridge between Hi-Speed USB and ATA/ATAPI-based mass storage device. It provides the capability to translate USB mass storage mands to ATA/ATAPI munication protocol. The USB adheres the Mass Storage Class Bulk-Only Transport Specification, and supports dual LUN operation, which could connect to two ATA/ATAPI devices.
JM20335 Key Features
- pliance with USB 2.0 electrical specification
- Support USB High-Speed and Full-Speed Operation
- pliance with USB Mass Storage Class, Bulk-Only Transport Specification
- Support ATA/ATAPI Ultra DMA Mode 0, 1, 2, 3, 4, 5
- Support ATA/ATAPI Multi-Word DMA Mode 0, 1, 2
- Support ATA/ATAPI PIO Mode 0, 1, 2, 3, 4
- Support ATA/ATAPI PACKET mand set
- Support ATA/ATAPI LBA48 addressing mode
- Support dual LUN (Logic Unit Number) with automatically master/slave enumeration
- Support 12MHz external crystal