NEC MultiSync V520 Service Manual page 51

PIN DESCRIPTION
Pin No. Pin Name
40 42
1 1 DA2
2 2 DA1
3 3 DA0
4 4 /RESET
5 5 VDD
6 7 GND
7 8 OSCO
8 9 OSCI
9 10 PB5/SDA2
10 11 PB4/SCL2
11 12 PB3/PAT
12 13 PB2
13 14 PB1
14 15 PB0
15 16 PB6/IRQ
16 17 PC7
17 18 PC6
18 19 PC5
19 20 PC4
20 21 PC3
21 22 PC2
22 23 PC1/AD1
23 24 PC0/AD0
24 25 SDA1/PD1
25 26 SCLI/PD0
26 27 PA0/DA8
27 28 PA1/DA9
28 29 PA2/DA10
29 30 PA3/DA11
30 31 PA4/DA12
31 32 PA5/DA13
32 33 PA6/VSO
33 34 PA7/HSO
34 35 DA7
35 36 DA6
36 38 DA5
37 39 DA4
38 40 DA3
39 41 HSYNC
40 42 VSYNC
I/O
O D/A converter 2. Open-drain output. External applied voltage can up to 10V.
O D/A converter 1. Open-drain output. External applied voltage can up to 10V.
O D/A converter 0. Open-drain output. External applied voltage can up to 10V.
I Reset. Active low. Schmitt trigger input, Internal pull high.
Power supply (+5V).
Ground (0V).
O Oscillator Output. Connects a 8MHz crystal.
I Oscillator Input. Connects a 8MHz crystal.
I/O I/O Port B5 or I²C data pin. This pin can be an I/O port or I²C serial data pin.
I/O I/O Port B4 or I²C data pin. This pin can be I/O port or I²C clock pin.
I/O I/O Port B3 or self-test pattern output. When as an I/O port, it is same as PB5.
When it is configured to test pattern output, a video signal is output.
I/O
I/O Port B2. Same as PB0.
I/O I/O Port B1. Same as PB0.
I/O I/O Port B0. When it is an input pin, it has an internal pull-up resistor. When it is an
output pin, the source/sink current is 5mA.
I/O I/O Port B6 or Interrupt Request. When as interrupt request input, it has an
internal pull high resistor. When as an I/O port, it is same as PB3.
I/O I/O Port C7. When it is an input pin, it has an internal pull-up resistor. When it is an
output pin, the sink current is 10mA and the source current is 5mA.
I/O I/O Port C6. Same as PC7.
I/O I/O Port C5. Same as PC7.
I/O I/O Port C4. Same as PC7.
I/O I/O Port C3. Same as PC7.
I/O I/O Port C2. Same as PC7.
I/O I/O Port C1 or A/D converter input 0.
I/O
I/O Port C0 or A/D converter input 1.
I/O DDC serial clock or I/O Port D1. When it is a DDC interface pin, It is an open-
drain output. When as an I/O port, it is same as Port B.
I/O DDC serial clock or I/O Port D0. When it is a DDC interface pin, It is an open-
drain output. When as an I/O port, it is same as Port B.
I/O I/O Port A0 or D/A converter 8. This pin can be the output of D/A converter 8
(source /sink = 5mA) or an I/O pin (source = -100uA, sink = 5mA).
I/O I/O Port A1 or D/A converter 9. Same as PA0/DA8.
I/O I/O Port A2 or D/A converter 10. Same as PA0/DA8.
I/O I/O Port A3 or D/A converter 11. Same as PA0/DA8.
I/O I/O Port A4 or D/A converter 12. Same as PA0/DA8.
I/O I/O Port A5 or D/A converter 13. Same as PA0/DA8.
I/O I/O Port A6 / VSYNC OUT. This pin can be the output of VSYNC or an I/O pin.
When as an I/O pin, it is same as PA0.
I/O I/O Port A7 / HSYNC OUT. This pin can be the output of HSYNC or an I/O pin.
When as an I/O pin, it is same as PA0.
O D/A converter 7. Open-drain output. External applied voltage can up to 10V.
O D/A converter 6. Open-drain output. External applied voltage can up to 10V.
O D/A converter 5. Open-drain output. External applied voltage can up to 10V.
O D/A converter 4. Open-drain output. External applied voltage can up to 10V.
O D/A converter 3. Open-drain output. External applied voltage can up to 10V.
I HSYNC input. Schmitt trigger input.
I VSYNC input. Schmitt trigger input.
Descriptions
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