Epson Stylus Pro 7500 - Nibble Mode

EPSON Stylus Pro 7500 Revision A
Product Description Interfaces 26
NIBBLE MODE
o
Data Transfer Format: IEEE-1284 Nibble Mode
o Synchronization System: Compatible with IEEE-1284 Specifications
o Handshake: Compatible with IEEE-1284 Specifications
o Logic level: TTL level (IEE-P1284 Level 1 device)
o Data transfer timing: Compatible with IEEE-1284 Specifications
o Expansion Request Data: If the expansion request data value is 00H or 04H,
the request is received. The meanings of these
values are as shown below.
00H:Request to carry out reverse channel transfers
in the Nibble mode.
04H:Request to return the ID of the device using
the Nibble mode for reverse channel
transfers.
o Device ID: [00H] [47H]
MFG: EPSON
CMD: ESCPL2, BDC;
MDL:Stylus [SP] Pro [SP] 7500
CLS: PRINTER
DES: EPSON [SP] Stylus [SP] Pro [SP] 7500;
*: [SP] is code 20<H>.
o See the table below for the signal layout and signal names.