Oki 3391 Printer User Manual


 
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Note: From the illustration above, you can see that the command and the command response are output at the same time. This is because
the bit 0 to bit 3 of OPRXD are fixed so that the response can be returned before decoding the command.
OPTXD
OPCLK
OPRXD
OPCLR-N
1 2 3 2
31
6
5 or 8
bit0 bit7
Command (first) Command (second)
Command response (first) Command response (second)
Note
bit0 bit7
Reset
within
BU5148S
Power ON
Write instruction for LSI
reset
LSI write for LED data,
etc.
Read instruction for
data read
Response check
for OK or NG
Error notification
Instruction for
retransmission
1
2
3
4
7
8
5
6
NO
YES
7