Epson Stylus Color 980 - Parallel Interface (Reverse Channel)

EPSON Stylus Color 980 Revision A
Product Description Interface 22
1.3.2 Parallel Interface (Reverse Channel)
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Transmission mode: IEEE-1284 nibble mode
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Adaptable connector: See the forward channel.
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Synchronization: Refer to the IEEE-1284 specification
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Handshaking: Refer to the IEEE-1284 specification
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Data trans. timing: Refer to the IEEE-1284 specification
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Signal level: IEEE-1284 level 1 device
(See forward channel.)
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Extensibility request:
The printer responds affirmatively when the extensibility request
values are 00H or 04H,as follows;
00H:Request Nibble Mode Reverse Channel Transfer.
04H:Request device ID using Nibble Mode Rev Channel
Transfer.
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Device ID:
The printer sends following device ID string upon request.
When IEEE1284.4 is enabled;
[00H] [60H]
MFG:EPSON;
CMD:ESCPL2,PRPXL,BDC,D4;
MDL:Stylus[SP]COLOR[SP]980;
CLS:PRINTER;
DES:EPSON[SP]Stylus[SP]COLOR[SP]980;
When IEEE1284.4 is disabled;
[00H] [5DH]
MFG:EPSON;
CMD:ESCPL2,PRPXL,BDC;
MDL:Stylus[SP]COLOR[SP]980;
CLS:PRINTER;
DES:EPSON[SP]Stylus[SP]COLOR[SP]980;
NOTES:
1. [00H] denotes a hexadecimal value of zero.
2. MDL value and DES value depend on the EEPROM setting.
3. CMD value depends on the IEEE1284.4 setting.
See Table 1-14 which shows pin assignment for reverse channel