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ViewSonic Corporation
19
Confidential - Do Not Copy
VA703b-4_VA703m-4
ADC: 15 pins
Name
I/O
Pin No
Description
Note
ADC_GND AG
27
ADC
ground
ADC_REFIO
AP
28
ADC band-gap voltage de-coupling
1.20V
ADC_VDD AP
29
Analog
power
(3.3V)
BLUE+
AI
30
Analog input from BLUE channel
BLUE-
AI
31
Analog input ground from BLUE channel
ADC_GND AG
32
ADC
ground
SOG/ADC_TEST
AIO
33
SOG in/ADC test pin
GREEN+
AI
34
Analog input from GREEN channel
GREEN-
AI
35
Analog input ground from GREEN
channel
ADCB_VDD AP
36
Analog
power
(3.3V)
RED+
AI
37
Analog input from RED channel
RED-
AI
38
Analog input ground from RED channel
ADC_GND AG
39
Analog
ground
ADC_GND AG
40
Analog
ground
ADC_VDD AP
41
Analog
power
(3.3V)
AHS
AI
42
Analog HS input
(10)
, (4), (5)
AVS
AI
43
Analog VS input
(2), (4), (5)
PLL: 8 pins
Name
I/O
Pin No
Description
Note
XO AI
1
Reference
clock
output
XI
AO
2
Reference clock input
DPLL_GND
AG
3
Ground for digital PLL
DPLL_VDD
AP
4
Power for digital PLL
(3.3V)
APLL_VDD
AP
5
Power for multi-phase PLL
(3.3V)
PLL_TEST1
AIO
6
Test Pin 1 / IRQ#
PLL_TEST2
AIO
7
Test Pin 2/Power-on-latch for crystal out
Frequency
APLL_GND
AG
8
Ground for multi-phase PLL
Control Interface: 7 pins
Name
I/O Pin No Description
Note
SDIO [0]
IO
54
Serial control I/F data in / Parallel port
data [0]
(2), (3), / 2mA
SDIO [1] / TCON [4] /
BBLU [0]
IO
53
Parallel port data [1] / TCON [4] / TTL
BBLU [0]
(1), (2), (3), / 2mA
SDIO [2] / TCON [3] /
BBLU [1]
IO
52
Parallel port data [2] / TCON [3] / TTL
BBLU [1]
(1), (2), (3), / 2mA
SDIO [3] / PWM2 /
TCON [2]
IO
51
Parallel port data [1] / TCON [4] / PWM2
(1), (2), (3), / 2mA
SCLK
I
50
Serial control I/F clock
(2), (3), (5)
SCSB
I
111
Serial control I/F chip select
(2), (3), (5)
RESET
O
56
RESET output for Micron
(2), (5), (6) / 2mA
Summary of Contents for VA703b-4
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Page 41: ...STEP5 DCC WRITTEN methods ViewSonic Corporation 38 Confidential Do Not Copy VA703b 4_VA703m 4...
Page 87: ...ViewSonic Corporation 83 11 PCB Layout Diagrams Confidential Do Not Copy VA703b 4_VA703m 4...
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