LCD MONITOR 15EX
LCD MONITOR 15EX
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TA MAINTENANCE
TA MAINTENANCE
35
Unless otherwise stated, unused input pins must be tied to ground, and unused output pins left open.
Analog-to-Digital Converter.
Pin Name I/O
Drive
Current
(@10pF)
Description
77 ADC_VDD2
Digital power for ADC encoding logic. Must be
bypassed with 0.1 uF capacitor to pin 78
(ADC_GND2)
78 ADC_GND2
Digital GND for ADC encoding logic. Must be
directly connected to the digital system ground
plane.
79 ADC_VDD1
Digital power for ADC clocking circuit. Must be
bypassed with 0.1 uF capacitor to pin 80
(ACD_GND1)
80 ADC_GND1
Digital GND for ADC clocking circuit. Must be
directly connected to the digital system ground
plane.
81 SUB_GNDA
Dedicated pin for substrate guard ring that protects
the ADC reference system. Must be directly
connected to the analog system ground plane.
82 ADC_GNDA
Analog ground for ADC analog blocks that are
shared by all three channels. Includes bandgap
reference, master biasing and full scale adjust. Must
be directly connected to analog system ground plane.
84 ADC_VDDA
Analog power for ADC analog blocks that are shared
by all three channels. Includes bandgap reference,
master biasing and full scale adjust. Must be
bypassed with 0.1 uF capacitor to pin 82
(ADC_GNDA).
83 Reserved
For internal testing purpose only. Do not connect.
85 ADC_BGNDA
Analog ground for the blue channel. Must be directly
connected to the analog system ground plane.
88 ADC_BVDDA
Analog power for the blue channel. Must be
bypassed with 0.1 uF capacitor to pin 85 (BGNDA).
86 BLUE-
In
Negative analog input for the Blue channel.
87 BLUE+
In
Positive analog input for the Blue channel.
89 ADC_GGNDA
Analog ground for the green channel . Must be
directly connected to the analog system ground
plane.
92 ADC_GVDDA
Analog power for the green channe. Must be
bypassed with 0.1 uF capacitor to pin
89 (ADC_GGNDA).
90 GREEN-
In
Negative analog input for the Green channel.
91 GREEN+
In
Positive analog input for the Green channel.
93 ADC_RGNDA
Analog ground for the red channel. Must be directly
connected to the analog system ground plane.
A n a lo g -to -D ig ita l C o n v e r te r
P in
N a m e I/O
D r iv e
C u r r e n t
(@ 1 0 p F )
D e sc r ip tio n
96
A D C _R V D D A
A nalog pow er for the red channel. M ust be bypassed
w ith 0.1 uF capacitor to pin 93 (A D C _R G N D A ).
94
R E D -
In
N egative analog input for the R ed channel.
95
R E D +
In
Positive analog input for the R ed channel.
Host Interface (HIF) / External On-Screen Display
Pin
Name I/O
Drive
Current
(@10pF)
Description
98 HFS
In
Host Frame Sync. Frames the packet on the serial
channel.
103 HCLK
In
Clock signal input for the 3-wire serial
communication.
99 HDATA
in/out
4 mA
Data signal for the 3-wire serial communication
100 RESETn
In
Resets the gmZAN1 chip to a known state when low.
101 IRQ
out
4 mA
Interrupt request output
115 OSD-HREF
out
4 mA
HSYNC output for an external OSD controller chip.
116 OSD-VREF
out
4 mA
VSYNC output for an external OSD controller chip.
117 OSD-Clk
out
8 mA
Clock output for an external OSD controller chip.
118 OSD-Data0
in
Data input 0 from an external OSD controller.
119 OSD-Data1
in
Data input 1 from an external OSD controller.
120 OSD-Data2
in
Data input 2 from an external OSD controller.
121 OSD-Data3
in
Data input 3 from an external OSD controller.
122 OSD-FSW
in
External OSD window display enable. Displays data
from external OSD con troller when high.
123 MFB11
in/out
8 mA
Multi-Function Bus 11. One of twelve multi-function
signals MFB[11:0].
124 MFB10
in/out
8 mA
Multi-Function Bus 10. One of twelve multi-function
signals MFB[11:0].
102 MFB9
in/out
8 mA
Multi-Function Bus 9. One of twelve multi-function
signals MFB[11:0].
Also used as HDATA3 in a 4-bit host interface
configuration.
104 MFB8
in/out
8 mA
Multi-Function Bus 8. One of twelve multi-function
signals MFB[11:0].
Also used as HDATA2 in a 4-bit host interface
configuration.
105 MFB7
in/out
8 mA
Multi-Function Bus 7. One of twelve multi-function
signals MFB[11:0].
Also used as HDATA1 in a 4-bit host interface
configuration.
5.
5.
Pin Description Of Major Components
Pin Description Of Major Components
5.1 gmZAN1 Flat Panel Controller IC
5.1 gmZAN1 Flat Panel Controller IC
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1
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