4 crt/tft interface signals – AMD Geode SC1201 User Manual
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AMD Geode™ SC1200/SC1201 Processor Data Book
Signal Definitions
32579B
VOPD7
D20
O
Video Output Port Data. The data is output from the
Video Processor in VESA Video Interface Port Rev 1.1
Task B format.
PD2+TFTD8+
F_AD2
VOPD6
A21
PD1+TFTD7+
F_AD1
VOPD5
C21
PD0+TFTD6+
F_AD0
VOPD4
B21
INIT#+TFTD5+
SMI_O
VOPD3
D21
ERR#+TFTD4+
F_CBE0#
VOPD2
B17
BUSY/WAIT#+
TFTD3+F_C/BE1#
VOPD1
D22
AFD#/DSTRB#+
TFTD2+INTR_O
VOPD0
A20
PD6+TFTD1+
F_AD6
VOPCK
B18
O
Video Output Port Clock. The clock output from the
Video Processor.
ACK#+TFTDE+
FPCICLK
3.4.3
Video Port Interface Signals (Continued)
Signal Name
Ball No.
Type
Description
Mux
3.4.4
CRT/TFT Interface Signals
Signal Name
Ball No.
Type
Description
Mux
DDC_SCL
Y1
O
DDC Serial Clock. This is the serial clock for the VESA
Display Data Channel interface. It is used for monitor
communications. The DDC2B standard is supported by
this interface.
IDE_DATA10
DDC_SDA
Y2
I/O
DDC Serial Data. This is the bidirectional serial data sig-
nal for the VESA Display Data Channel interface. It is
used for monitor communications. The DDC2B standard
is supported by this interface.
IDE_DATA9
HSYNC
A11
O
Horizontal Sync
---
VSYNC
B11
O
Vertical Sync
---
VREF
D16
I/O
Voltage Reference. Reference voltage for CRT PLL and
DAC. This signal reflects the internal voltage reference. If
internal voltage reference is used (recommended), leave
this ball disconnected. If an external voltage reference is
used, this input is tied to a 1.235V reference.
---
SETRES
B15
I
Set Resistor. This signal sets the current level for the
RED/GREEN/BLUE analog outputs. Typically, a 464
Ω,
1% resistor is connected between this ball and AV
SSCRT
.
---
On-Chip RAMDAC
RED
B12
O
Analog Red, Green and Blue
---
GREEN
A14
---
BLUE
A15
---
TFT (External DAC) Interface