Circuit Diagram (13/13) - Oki OKIFAX4550 Maintenance Manual

3.13 46F Circuit Diagram (13/13)
1. Block diagram
46F-PCB circuit diagram (13/13) shown the consists of the ispLSI2032E-110LT44
(PLD: Programmable Logic Device) of IC22.
Figure A.18 shows the related signals of PLD.
2. Functions
• chip select decode
• wait control
• MUPIS-WR
• AFXN
• High voltage PWN signal
• DACK0
OH1-N (MUPISRDY)
MUPISID1
DMPWM-P
41309401TH Rev.4
: V34CS and MUPISCS signals are produced from NMDCS2 and
A18 signals.
: NMDWAIT signal is produced from MUPISRDY-N signal.
: MUPISWR signal is produced from WRL-N and CLK signal
: AFXN signal is produced from AFXN-I and PLD internal control
signal.
: DBPWM, CB1PWM, and CB2PWM output signals are produced
respectively from DBPWM-P input signal and DBENP, CB1ON-
P, and CB2ON-P signals.
: DACK0-O signal is produced from DACK0-I signal.
IC22 (PLD)
NMDCS2
CS decode
A18
wait control
WRL-N
MUPIS-WR
CLK
AFXN-I
PLD-CS
AFXN
D0
DBENP
PWM control
CB10N-P
CB20N-P
DACK0-I
DACK0
Figure A.18 Related Signals of PLD
V34CS
MUPISCS
NMDWAIT
MUPISWR
AFXN
DBPWM
CB1PWM
CB2PWM
DACK0-O
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