Interface; Scsi - Epson GT-9000 Service Manual

EPSON GT-9600

1.3 Interface

This section explains interface of this scanner. This scanner is equipped
with SCSI as standard interface. Refer to Service Manual of GT-9500
for pin alignment.

1.3.1 SCSI

Any items not included in this specification shall be in compliance with
ANSI X3. 131-1994 (SCSI 2).
† Function: The following functions are available, which are included
in ANSI X3. 131-1994 (SCSI 2).
1. Bus free phase
2. Arbitration phase
3. Selection/Re-selection phase
4. Command phase
Note) The LUN(Logical Unit Number) is fixed at "0" in this device.
The command Link Function is not supported.
5. Data phase
Data in phase
Data out phase
6. Status phase
7. Message phase
Message in phase
Message out in phase
8. Attention condition
9. Reset condition
Product Description
SCAM(SCSI Configured Auto Matically specification) [ANSI T10/1142
rev.15]
† Electric Specification
Compliant to ANSI X3. 131-1994 (SCSI 2)
Single ended
† Connector
Two 50-pin connectors (Half Pitch)
† Terminator
Internal terminator
Enable to control "active" or "inactive" by a switch. (SW=ON ---
Terminator available)
† SCSI ID
The SCSI ID is set with a rotary switch on the rear panel.
The switch numbers are corresponded to the available address and
can be set from 0 to 7. Factory setting ID=2.
† Command
This device use the following group "0" processor commands.
Table 1-2. Command List
Command Code
Test Unit Ready 00h
Request Sense 03h
Receive 08h
Send 0Ah
Inquiry 12h
Send Diagnostic 1Dh
NOTE: *1 Only the extension sense data format is supported for
sense data returned by the Request Sense Command.
*2 The Inquiry data is as follows. (see the next page)
Interface
Revision A
Description
Confirm for operation
Require a Sense data*1
Data transmission from Target to Initiator
Data Transmission from Initiator to Target
Require information of SCSI devise*2
Send diagnostic
6