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CS5530A Datasheet

  • CS5530A

  • National Semiconductor [Geode CS5530A I/O Companion Multi-F...

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Geode鈩?CS5530A
Signal Definitions
(Continued)
2.2.11 Display Interface (Continued)
Signal Name
FP_VSYNC
Pin
No.
C1
Pin
Type
I
Description
Limited ISA Mode: Flat Panel Vertical Sync Input
This is the vertical sync input reference from the processor鈥檚 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#
E3
O
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鈥檚 def-
inition.
FP_DISP_
ENA_OUT
F2
O
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
L2
O
Flat Panel VDD Enable
This is the enable signal for the V
DD
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
J4
O
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.
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