Oki ML420 - Entering and Exiting Menu Mode; Resetting the Menu to the Factory Defaults; Printing the Menu Settings

42113901TH01 Rev.3 26 /
Oki Data CONFIDENTIAL
OPTXD
OPCLK
OPRXD
OPCLR-N
1232 31
6
7
5 or 8
bit0 bit7
Command (first)
Command (second)
Command response (first)
Command response (second)
Note
bit0 bit7
Reset
within IC
Power ON
Write instruction for IC
reset
IC 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
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.