EL7301
Introduction
Etron's EL7301 is the key graphics processing IC that enable liquid Crystal Display (LCD) monitor at
SVGA, XGA and SXGA TFT-LCD resolution. This single chip solution included a triple-channel ADC,
two PLL circuits, one internal On Screen Display (OSD), sophisticated filter and the most advanced
scaling engine. The digital or video input can also be supported via analog/digital input ports that
implemented in EL7301.
The EL7301 captures input RGB graphics signals directly through the use of the internal PLLs. Such
signals will then be converted to 8-bit digital data per channel. The output frequencies range is up to
the resolution of SXGA with very small jitter (typically equal to 800ps). Such advantage surely
provides high degree of flexibility and display quality for users while setting different level of
resolution
Figure : EL7301 system block diagram application in dual interface
VD[23:0]
NTSC/PAL/
SECAM
Video
Decoder
DVS/DHS
DDE/DCLK
De-
interlacer
X'tal_I
25 MHz
X'tal
Triple
ADC
PD[47:0]
PHS/PVS/PDE
R/G/B
SoG
Processor
EL7301
Core
PCLK0
PCLK1
PLL
H-sync/V-sync
TFT
Panel
PLL
AD[7:0]
Controls
CS
Optional
External
OSD
Host
I/F
MPU
OSD
R/G/B
1
ETRON [ ETRON TECHNOLOGY, INC. ]
