CS5530A datasheet(38/259 Pages) NSC

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Signal Definitions (Continued)

FP_VSYNC

Limited ISA Mode: Flat Panel Vertical Sync Input

This is the vertical sync input reference from the processor’s display control-

ler. The timing of this signal is independent of the standard (CRT) vertical

sync input to allow a different timing relationship between the flat panel and

an attached CRT.

ISA Master Mode: No Function

In the ISA Master mode of operation, the CS5530A can not support TFT flat

panels or TV controllers.

FP_VSYNC_OUT

/SMEMR#

Limited ISA Mode: Flat Panel Vertical Sync Output

This is the vertical sync for an attached active matrix TFT flat panel. This

represents a delayed version of the input flat panel vertical sync signal with

the appropriate pipeline delay relative to the pixel data.

ISA Master Mode: System Memory Read

Refer to Section 2.2.5 "ISA Bus Interface" on page 28 on for this signal’s def-

inition.

FP_DISP_

ENA_OUT

Flat Panel Display Enable Output

This is the display enable for an attached active matrix TFT flat panel. This

signal qualifies active pixel data on the flat panel interface.

ISA Master Mode: No Function

In the ISA Master mode of operation, the CS5530A can not support TFT flat

panels or TV controllers.

FP_ENA_VDD

Flat Panel VDD Enable

This is the enable signal for the VDD supply to an attached flat panel. It is

under the control of power sequence control logic. A transition on bit 6 of the

Display Configuration Register (F4BAR+Memory Offset 04h) initiates a

power-up/down sequence.

ISA Master Mode: No Function

In the ISA Master mode of operation, the CS5530A can not support TFT flat

panels or TV controllers.

FP_ENA_BKL

Flat Panel Backlight Enable Output

This is the enable signal for the backlight power supply to an attached flat

panel. It is under control of the power sequence control logic.

ISA Master Mode: No Function

In the ISA Master mode of operation, the CS5530A can not support TFT flat

panels or TV controllers.

2.2.11 Display Interface (Continued)

Signal Name

No.

Type

Description

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