Xerox WorkCentre Pro 412 Service Manual page 42

Circuit Description
5-3-2 Power on/off Reset (WorkCentre Pro 412 & FaxCentre 12)
1) Signal Operation
Input Signal
Output Signal
• Power on/off detect
Reset time (Td)
• Td = (Ct*V sensing)/I charge (...Ct = 33µF, Is = 100µA)
2) Timing Chart
5-3-3 Power on/off Reset (WorkCentre M15/M15i)
1) Signal Operation
Input Signal
Output Signal
Reset Time (Td)
• Td = (Ct*V sensing)/I charge (...Ct=33µF, Is=100µA)
2) Timing Chart
MCLK
nRESET
nPWRGD
HICLK
reRESETn
RESETn
5-4
+5V Power Line (VCC)
KS32C61200 nRESET 29F800B nRESET
VCC RISING/FALLING 4.5°¦4.6V
1.48 to 1.52ms
+3.3V Power Line (VCC)
ARM946ES nRESET and 29LU16ø
• POWER ON/OFF DETECT VCC RISING/FALLING 4.5°¦4.6V
1.48 to 1.52ms
20 MCLK
15 HCLK
5.461 ms
20 MCLK
(65535 MCLK)
5.461 ms
(65535 MCLK)
3/03 WorkCentre Pro 412, FaxCentre F12 &
CLK falling
WorkCentre M15/M15i