B69000 Asiliant Technologies, B69000 Datasheet - Page 129

• Manufacturer Part Number: B69000
• Manufacturer: Asiliant Technologies

Specifications of B69000

• Lead Free Status / Rohs Status: Supplier Unconfirmed

9-36
CR71
read/write at I/O address 3B5h/3D5h with index at address 3B4h/3D4h set to 71h
7
6
5
4-3
2-0
&+,36
NTSC/ PAL
Sel
7
NTSC/PAL Select
0: Selects NTSC-formatted video output.
1: Selects PAL-formatted video output.
Pedestal Enable
0: Disables the provision of an additional voltage pedestal on red, green and blue analog output
lines during the active video portions of each horizontal line.
1: Enables the provision of an additional voltage pedestal on the red, green, and blue analog output
lines during the active video portions of each horizontal line.
Blanking Delay Control
0: Blanking period is not delayed on odd frames.
1: Blanking period is delayed by half a scanline on odd frames.
Composite Sync Character Clock Delay
These 2 bits specify the number of character clocks (from 0 to 3) by which the composite sync may
be delayed.
Composite Sync Pixel Clock Delay
These 3 bits specify the number of pixel clocks (from 0 to 7) by which the composite sync may be
delayed.
69000 Databook
NTSC/PAL Video Output Control Register
Pedestal
Enable
6
Delay Ctrl
Blanking
5
Subject to Change Without Notice
CRT Controller Registers
Composite Sync Character
4
Clk Delay
3
2
Composite Sync
Pixel Clk Delay
Revision 1.3 8/31/98
1
0