Sharp FO 4400 - B/W Laser - All-in-One Service Manual page 100

FO-4400U
FO-CS1
LC24199B-WJ0-E (IC21) Terminal description (2/2)
PIN I/O Name
105 P VSS
106 I SDDCT
107 I DPANIC0
108 I DPANIC1
109 O DPANIC2
110 P DPANIC3
111 O DPANIC4
112 O DPANIC5
113 O DPANIC6
114 O DPANIC7
115 O DPANIC8
116 P DPANIC9
117 P DPANIC10
118 I DPANIC11
119 I DPANIC12
120 I VDD
121 O VSS
—
122 N.C
123 P DPANIC13
124 P DPANIC14
125 P DPANIC15
126 O DPANIC16
127 O XCSNICIN
128 I GPIO4
129 I GPIO5
130 I GPIO6
131 I GPIO7
132 I XNICACK
133 I XROLSNS
134 I XORGSNS
135 I XFRSNS
136 B XB4FRS
137 B PLNGON
138 B VDD
139 B VSS
SHCLK
140 P
141 P
XCS
142 B A16
143 B A15
144 B A14
145 B A13
146 B A12
147 B A11
148 B A10
149 B A9
150 B A8
151 B A7
152 B A6
153 B A5
154 O A4
—
155 N.C
156 P VDD
6) SM8578BV (IC22): pin-8, SOP (Real time clock IC)
It is oscillated with the quartz oscillator of 32.768 kHz, and the clock and
calendar functions are provided.
Even if the power supply of the main body is turned off, it is backed up
with lithium battery (BAT1).
This device executes the clock-synchronous type serial communication
with the Sub ASIC, and CPU can know the time and date through the
Sub ASIC.
Function
Ground
SD DICT in
Address bus for NIC board
Address bus for NIC board
Address bus for NIC board
Address bus for NIC board
Address bus for NIC board
Address bus for NIC board
Address bus for NIC board
Address bus for NIC board
Address bus for NIC board
Address bus for NIC board
Address bus for NIC board
Address bus for NIC board
Address bus for NIC board
Power supply
Ground
Not connect
Address bus for NIC board
Address bus for NIC board
Address bus for NIC board
Address bus for NIC board
Chip select of NIC in FAX mode
PWSAVE: Powr save control for PS-unit
LEDON: Light ON/OFF for LED in CIS
VPPCN: VPP control of nor flash memory
XWP: Write protect for nor flash memory
Acknowlede signal for NIC
Roller position sensor
Document sensor
Front sensor
B4 width sensor
Plunger contorl signal
Power supply
Ground
External bus Clock(33.3MHz)
Chip select signal
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Not connect
Power supply
PIN I/O Name
157 P VSS
158 I A3
159 I A2
160 I A1
161 I A0
162 I XWE
163 I RXW
164 I XRD
165 B D15
166 B D14
167 B D13
168 B D12
169 B D11
170 B D10
171 B D9
172 P VDD
173 P VSS
174 B D8
175 B D7
176 B D6
177 B D5
178 B D4
179 B D3
180 B D2
181 B D1
182 B D0
—
183 N.C
184 O INTR
185 I XRESET
186 I TEST
187 O RTCCE
188 O RTCCK
189 B RTCDT
190 P VDD
191 P VSS
192 O XMDMRST1
193 O XMDMRST0
BZCONT
194 O
195 O SPMUTE
196 O VOLC
197 O VOLB
198 O VOLA
199 O BZOUT
200 O GAINC1
ERLY1
201 O
202 O DPMUTE1
CML1
203 O
204 O TXMUTE1
205 O DPON1
206 O MONSEL
—
207 N.C
208 P VDD
5 – 10
Function
Ground
Address bus
Address bus
Address bus
Address bus
Write strobe signal from COSMOS
Read/Write Signal
Read strobe signal from COSMOS
Data bus
Data bus
Data bus
Data bus
Data bus
Data bus
Data bus
Power supply
Ground
Data bus
Data bus
Data bus
Data bus
Data bus
Data bus
Data bus
Data bus
Data bus
Not connect
Interrupt request signal
Reset signal
Test pin
Chip select (RTC)
Serial communication clock (RTC)
Serial communication data (RTC)
Power supply
Ground
Reset signal for modem chip 1
Reset signal for modem chip 0
Change control of sound source
Speaker mute control signal
Speaker volume control signal
Speaker volume control signal
Speaker volume control signal
Buzzer signal
Reserved for 200V
Reserved for 200V
Reserved for 200V
CML relay control signal
Mute control for TX signal
Active choke control
Monitor select/DC character measured
Not connect
Power supply