GM3120 查看數據表（PDF） - Genesis Microchip

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GM3120

XGA/SXGA LCD Controller

Genesis Microchip 

*** Genesis Microchip Confidential ***

gm5110/20 Preliminary Data Sheet

4. FUNCTIONAL DESCRIPTION

A functional block diagram is illustrated below. Each of the functional units shown is

described in the following sections.

NVRAM

Serial I/F Serial Host I/F

GPIO

Parallel

ROM IF

Crystal

Reference

DVI-Compliant

DVI Input

Analog

RGB

Host

Interface

DVI Rx

HDCP

Triple

ADC

8051-style

Micro-

controller

MCU

RAM

External

ROM I/F

Internal

ROM

Clock

Generation

OSD

Controller

OSD

RAMs

Image

Capture /

Measure-

ment

Brightness /

Contrast /

Hue / Sat /

RealColorTM /

Moire

Zoom /

Shrink /

Filter

Gamma

Control

Output

Data

Path

Panel Data

and Control

Figure 3.

gm5110/20 Functional Block Diagram

4.1 Clock Generation

The gm5110/20 features three clock inputs. All additional clocks are internal clocks derived

from one or more of these:

1. Crystal Input Clock (TCLK and XTAL). This is the input pair to an internal crystal

oscillator and corresponding logic. A 14.3 MHz TV crystal is recommended. Other

crystal frequencies may be used, but require custom programming. This is illustrated in

Figure 4 below. Alternatively, a single-ended TTL/CMOS clock oscillator can be driven

into the TCLK pin (leave XTAL as N/C in this case). This is illustrated in Figure 7

below. This option is selected by connecting a 10KΩ pull-up to ROM_ADDR13 (refer to

Table 18). See also Table 14.

2. DVI Differential Input Clock (RC+ and RC-)

3. Host Interface Transfer Clock (HCLK)

June 2002

10

C5110-DAT-01C

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