CS5530 datasheet(42/241 Pages) NSC

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Revision 4.1

Functional Description (Continued)

3.1.1

Display Subsystem Connections

When the GXLV processor is used in a system with the

CS5530, the need for an external RAMDAC is eliminated.

The CS5530 contains the DACs, a video accelerator

engine, and the TFT interface.

The CS5530 also supports both portable and desktop

configurations. Figure 3-2 shows the signal connections

for both types of systems.

Figure 3-3 details how PIXEL[17:0] on the processor con-

nects with PIXEL[23:0] of the CS5530.

Figure 3-2. Portable/Desktop Display Subsystem Configurations

DCLK

PCLK

FP_HSYNC

FP_VSYNC

ENA_DISP

VID_RDY

VID_CLK

VID_DATA[7:0]

PIXEL[17:12]

PIXEL[11:6]

HSYNC

VSYNC

R[5:0]

G[5:0]

B[5:0]

CLK

VDD

12VBKL

Pin 13

Pin 14

Pin 3

Pin 2

Pin 1

Pwr

Cntrl

ENAB

VGA

Pin 15

Pin 12

Geode™ CS5530

I/O Companion

DCLK

PCLK

FP_HSYNC

FP_VSYNC

ENA_DISP

VID_RDY

VID_CLK

VID_DATA[7:0]

PIXEL[23:18]*

PIXEL[15:10]*

PIXEL[5:0]

VID_VAL

CRT_HSYNC

CRT_VSYNC

PIXEL[7:2]*

VID_VAL

HSYNC

VSYNC

FP_ENA_VDD

FP_ENA_BKL

FP_DISP_ENA_OUT

FP_HSYNC_OUT

FP_VSYNC_OUT

FP_CLK

FP_DATA[17:12]

FP_DATA[11:6]

FP_DATA[5:0]

Logic

HSYNC_OUT

VSYNC_OUT

IOUTR

IOUTG

IOUTB

DDC_SCL

DDC_SDA

Note: *Connect PIXEL[17:16] PIXEL[9:8], and PIXEL[1:0] on the CS5530 to ground. See Figure 3-3.

Port

Portable

Configuration

TFT

Flat

R[5:0]

G[5:0]

B[5:0]

HSYNC

VSYNC

CLK

NTSC/PAL

Encoder

Panel

Geode™

Processor

GXLV

CS5530 Datasheet(PDF) 42 Page - National Semiconductor (TI)

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