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91
NC
92
NC
93
NC
94
VDDP
95
GND
96
GND
97
VDDC
98
NC
99
NC
100
NC
101
NC
102
LVA3P
103
LVA3M
104
VDDP
105
GND
106
LVACKP
107
LVACKM
108
LVA2P
109
LVA2M
110
LVA1P
111
LVA1M
112
LVA0P
113
LVA0M
114
VDDP
115
GND
116
GND
117
VDDC
118
LVB3P
119
LVB3M
120
LVBCKP
121
LVBCKM
122
LVB2P
123
LVB2M
124
LVB1P
125
LVB1M
126
VDDP
127
GND
128
LVBOP
7.4 U105 (Micro-controller: W78E65P-40)
Pin
Symbol
1
P4.2/INT3
2
P1,0/T2
3
P1.1/T2EX
4
P1.2
5
P1.3/PWM0
6
P1.4/PWM1
7
P1.5/PWM2
8
P1.6/PWM3
9
P1.7/PWM4
10
RST
11
P3.0/RXD
12
P4.3/INT2
13
P3.1/TXD
14
P3.2/INT0
15
P3.3/INT1
16
P3.4/T0
ViewSonic Corporation
Not connected
Not connected
Not connected
O
Digital Output Power
Ground
Ground
I
Digital Core Power
Not connected
Not connected
Not connected
Not connected
O
A-Link Positive LVDS Differential Data Output
O
A-Link Negative LVDS Differential Data Output
O
Digital Output Power
Ground
O
A-Link Positive LVDS Differential Clock Output
O
A-Link Negative LVDS Differential Clock Output
O
A-Link Positive LVDS Differential Data Output
O
A-Link Negative LVDS Differential Data Output
O
A-Link Positive LVDS Differential Data Output
O
A-Link Negative LVDS Differential Data Output
O
A-Link Positive LVDS Differential Data Output
O
A-Link Negative LVDS Differential Data Output
O
Digital Output Power
Ground
Ground
Digital Core Power
O
B-Link Positive LVDS Differential Data Output
O
B-Link Negative LVDS Differential Data Output
O
B-Link Positive LVDS Differential Clock Output
O
B-Link Negative LVDS Differential Clock Output
O
B-Link Positive LVDS Differential Data Output
O
B-Link Negative LVDS Differential Data Output
O
B-Link Positive LVDS Differential Data Output
O
B-Link Negative LVDS Differential Data Output
O
Digital Output Power
Ground
O
B-Link Positive LVDS Differential Data Output
I/O
Description
A bi-directional I/O port with alternate function.
O
Enable panel power on
O
Enable CCFL work
I
VGA cable detection
O
provide alternated function of PWM Volume
O
provide alternated function of PWM Green LED lighting control
O
provide alternated function of PWM Orange LED lighting control
Function is the same as that of standard 8052
Function is the same as that of standard 8052
I
Reset control pin
SCL line of I2C for EDID, debug function
PORT 4: A bi-directional I/O port with alternate function.
SDA line of I2C for EDID, debug function
I
Interrupt request control pin
O
Shut Down Volume Mutestandard 8052.
O
SCL line of I2C communication with EEPROM
Confidential - Do Not Copy
25
VA702-2_VA721-3_VA721b-3
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