Control Port Functions; System Control & I/O Port Table (Ic301) - Canon LV-S3E/D78-5423 Service Manual

2. CONTROL PORT FUNCTIONS

2.1 System Control & I/O Port Table (IC301)
Pin No. Name
178 Port A7
115 Port A6
44 Port A5
116 Port A4
45 Port A3
46 Port A2
117 Port A1
180 Port A0
173 Port B7
111 Port B6
40 Port B5
174 Port B4
41 Port B3
175 Port B2
112 Port B1
229 Port B0
71 Port E7
139 Port E6
200 Port E5
140 Port E4
201 Port E3
141 Port E2
72 Port E1
142 Port E0
119 Port F7
182 Port F6
47 Port F5
182 Port F4
189 Port F3
55 Port F2
207 Port F1
257 Port F0
194 A19
63 A19
132 A17
62 A16
61 A15
131 A14
193 A13
247 A12
60 A11
246 A10
59 A9
130 A8
129 A7
192 A6
128 A5
58 A4
191 A3
190 A2
245 A1
244 A0
242 D15
241 D14
187 D13
53 D12
124 D11
186 D10
240 D9
123 D8
185 D7
122 D6
Function Name Function
LAMP_PWM PWM Output to Sub-CPU
MUPO_ON
M_SCL1
M_SDA1
M_SCL2
M_SDA2
SCLK 3 Line Serial Bus Clock
SDATA 3 Line Serial Bus Data
NMI Reset SW Input
IRM_STB 3 Line Serial Bus Strobe
3L_EN 3 Line Serial Bus Enable
POWER_FAIL Power Fail Detection
A23 Address Bus 23
A22 Address Bus 22
A21 Address Bus 21
A20 Address Bus 20
5V_SW Standby 5V OFF
DCLK_SW
VHDPEN IC101 Video Decoder Enable
LAMP_POW Lamp ON to Sub-CPU
USB_VBUS USB Connector Detection
USB_RST USB Device Reset Output
ON_15V Standby 15V OFF
USB_EN USB Device Enable Output
IRRCVR1 IR Receiver Input 1
IRRCVR0 IR Receiver Input 0
RXD
TXD
CS0 I/O Expander Chip Select (Output)
CS1 I/O Expander Chip Select (Input)
DCLKEXT D-port Clock External Input
MCLKEXT Memory System Clock Input
A19 Address Bus 19
A18 Address Bus 18
A17 Address Bus 17
A16 Address Bus 16
A15 Address Bus 15
A14 Address Bus 14
A13 Address Bus 13
A12 Address Bus 12
A11 Address Bus 11
A10 Address Bus 10
A9 Address Bus 9
A8 Address Bus 8
A7 Address Bus 7
A6 Address Bus 6
A5 Address Bus 5
A4 Address Bus 4
A3 Address Bus 3
A2 Address Bus 2
A1 Address Bus 1
A0 Address Bus 0
D15 Data Bus 15
D14 Data Bus 14
D13 Data Bus 13
D12 Data Bus 12
D11 Data Bus 11
D10 Data Bus 10
D9 Data Bus 9
D8 Data Bus 8
D7 Data Bus 7
D6 Data Bus 6
4-7
Part 4: Troubleshooting
Polarity I/O
PWM O
I
I/O
O
I/O
O
O
O
I
O
O
Error = L I
Standby = L O
O
O
Lamp-ON = H O
Not used I
O
Standby = L O
O
Not used I
I
I
O
O
O
Not used I
Not used I
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O