Description; Features - Epson S1R72105 Technical Manual

1. DESCRIPTION

S1R72105 contains the SCSI-3 interface controller and the USB 1.1 controller that support SCAM and FAST20
transfer, which is capable of bridging general-purpose I/O port and IDE DMA port as well as SCSI and USB
interfaces.

2. FEATURES

«CPU Interface»
It can be connected to a general-purpose CPU
«SCSI Interface»
Compatible with SCSI-2 (10Mbps (synchronous), 5Mbps (asynchronous))
Compatible with SCSI-3 FAST20 (20Mbps (synchronous)) transfer
Compatible with SCAM Lv.1 (compatible with Lv.2 with firmware)
Automatic processing of phase control
Built-in single end driver
Active negation I/O mounted
«USB Interface»
Compatible with full speed mode (12Mbps) transfer
Compatible with control transfer by endpoint 0 and bulk and interrupt transfers by three individual
endpoints
Split of the built-in SRAM (256 bytes) is programmable by user definition
In addition to two-way endpoint 0, a maximum of three endpoints can be set
«PORT Interface»
General-purpose 8/16 bit-selectable purpose interface
It allows selection between master and slave
Since it allows DMA connection to IDE(ATAPI), IDE (ATAPI) equipment can be easily turned into the
SCSI and USB equipment
«Others»
Built-in oscillation circuit: 20MHz/40MHz
Built-in PLL circuit (generates both USB and SCSI clocks from 20MHz oscillation)
100 pin QFP (0.5 mm pitch)
Supply voltage: 5.0V±10% and 3.3V±0.3V
No anti-radiation design
Rev.1.0
S1R72105 Technical Manual
EPSON 1