GMZAN3 Datasheet, PDF (26/53 Pages) List of Unclassifed Manufacturers – XGA ALALOG INTERFACE LCD MONITOR CONTROLLER

gmZAN3 Preliminary Data Sheet
Note:
• The RESETn pin may also be connected to an external momentary contact switch to
ground, for a Reset Button feature.
• When analog 3.3V reaches the reset threshold (2.5V) an active LOW reset signal is
generated (RESETn). The duration of the reset pulse is about 120ms.
• The RESET_OUT is active HIGH output pulse held high while RESETn is LOW
• When +3.3V_AVDD drops below 2.5V a reset signal is generated. The reset signal gets
de-asserted about 120ms after the input voltage rises above the 2.5V threshold (see figure
12).
• The following table shows the temperature/voltage variation effects on the RESETn
timing (T_RESETn).
Table 13.
Voltage
3.0V
3.3V
3.6V
Temperature and Voltage variations for T_RESETn
0°C
107 ms
119 ms
123 ms
Room Temperature
105 ms
118 ms
123 ms
100°C
110 ms
119 ms
126 ms
4.3 Analog to Digital Converter
The gmZAN3chip has three ADC’s (analog-to-digital converters), one for each color (red, green, and
blue).
4.3.1 ADC Pin Connection
The analog RGB signals are connected to the gmZAN3 as described below:
Table 14. Pin Connection for RGB Input with HSYNC/VSYNC
Pin Name
Red+
Red-
SOG_MCSS
Green+
Green-
Blue+
Blue-
HSYNC
VSYNC
ADC Signal Name
Red
Terminate as illustrated in Figure 13
Dedicated Sync-on-Green pin (for sync-tip clamping)
Green
Terminate as illustrated in Figure 13
Blue
Terminate as illustrated in Figure 13
Horizontal Sync (Terminate as illustrated in Figure 13)
Vertical Sync (Terminate as with HSYNC illustrated in Figure 13)
C0523-DAT-01G
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Genesis Microchip Confidential
http://www.genesis-microchip.com
July 2003