Xerox WorkCentre XK50cx Service Manual page 35

Circuit
KS32C6400 Assigned I/O Ports & /Chip_SELECT Pins
* /External_Chip_Select : /ECS0 : Pin117 : /MCS : Modem Chip Select.
: /ECS1 : Pin118 : /USB_CS : USB Chip Select.
: /ECS2 : Pin119 : /IP_CS : DUO_IP2 Chip Select.
PORT NAME PIN NO
GOP0/TXD1 121
GOP1/TXD2 123
GOP2/nEDACK1 138
GOP3/TONE 148
GOP4/nRST0 149
GOP5/nIOWR1 133
GOP6/nIOWR2 154
GOP7/nIORD1 155
GOP8/DRV_SDO 152
GOP9/CLKOUT 151
GOP10 150
GOP11/nHSC 153
GOP12/nEDACK2 128
GOP13/nECS3
GIP0/RXD1 122
GIP1/RXD2 124
GIP2/nEINT1 135
GIP3/nEINT2 136
GIP4/nEDREQ1 137
GIP5/nEDREQ2 127
GIP6/nEINT3
GIOP0/TCK 126
GIOP1/TMS 125
GIOP2/TDI 120
GIOP3/nTRST 116
GIOP4/TDO 115
GIOP5 103
GIOP6
GIOP7/nWAIT
EEDATA 145
EECLK 146
4-8
I/O SIGNAL NAME
O RESERVED
O OPE_TXD
O /XDACK
O KEYCLICK
O WATCHDOG
O TONE_CTL
O /OPE_RST
O /BIAS_ON
O /IP_RST
O IP_CLK
O /USB_RST
O /SPK_CTL
O /USB_XDACK
42 O /DRAM_EN
I RESERVED
I OPE_RXD
I /MIRQ
I TX_INT
I /XDREQ
I /USB_XDREQ
41 I /USB_INT
I TCK
I TMS
I TDI
I /TRST
O TDO
O
/M_RST
38 O /HOOK_OFF
31 O /RING_DET
O AMB_TEMP
O TX_CTL
DESCRIPTION
H
N.C
SERIAL DATA FROM KS32C6400 TO OPE MICOM
IDLE STATE
KEYCLICK TONE
WATCHDOG RESET OFF
LINE MONITORING
OPE RESET OFF
PRINT HEAD BIAS OFF
DUO_IP2 RESET OFF
40MHz CLOCK TO DUO_IP2
RESET OFF : IDLE STATE
AUDIO AMP OFF
IDLE STATE
Disable DRAM to idle state
N.C
SERIAL DATA FROM OPE MICOM TO KS32C6400
MODEM INTERRUPT INACTIVE
IDLE
IDLE
IDLE
IDLE
RESERVED TEST PIN FOR ICE(JTAG)
RESERVED TEST PIN FOR ICE(JTAG)
RESERVED TEST PIN FOR ICE(JTAG)
RESERVED TEST PIN FOR ICE(JTAG)
RESERVED TEST PIN FOR ICE(JTAG)
MODEM RESET OFF : IDLE STATE
Ext. Phone Hook ON
-
AMBIENT TEMPERATURE DATA FROM HEAD
RX PASS SIGNAL
L
N.C
DMA ACKNOWLEDGE TO SCAN IP
WATCHDOG RESET
KEYCLICK
OPE RESET
PRINT HEAD BIAS ON
DUO_IP2 RESET ON
RESET ON
AUDIO AMP OFF
DMA ACKNOWLEDGE TO USB IC
Enable DRAM to read state
N.C
MODEM INTERRUPT ACTIVE
TX MOTOR INTERUPT
DMA REQUEST FROM SCAN IP
DMA REQUEST FROM USB IC
USB IC INTERUPT
MODEM RESET ON
Ext. Phone Hook OFF
RING DETECTED
TX LINE SIGNAL