Datasheet

Functional Description
26
May 2006SLES043A
3.22.2 Analog Channel Controls Register
Address 01h
7 6 5 4 3 2 1 0
Reserved 1 Automatic offset control Automatic gain control
Automatic offset control:
00 = Disabled
01 = Automatic offset enabled (default)
10 = Reserved
11 = Clamping level frozen to the previously set value
Automatic gain control (AGC):
00 = Disabled (fixed gain value)
01 = AGC enabled (default)
10 = Reserved
11 = AGC frozen to the previously set value
3.22.3 Operation Mode Controls Register
Address 02h
7 6 5 4 3 2 1 0
Reserved Color subcarrier PLL frozen Reserved Power down mode
Color subcarrier PLL frozen:
0 = Color subcarrier PLL increments by the internally generated phase increment. (default)
GLCO pin outputs the frequency increment.
1 = Color subcarrier PLL stops operating.
GLCO pin outputs the frozen frequency increment.
Power down mode:
0 = Normal operation (default)
1 = Power down mode. A/Ds are turned off and internal clocks are reduced to minimum.
3.22.4 Miscellaneous Control Register
Address 03h
7 6 5 4 3 2 1 0
VBKO GPCL pin
GPCL I/O mode
select
Lock status
(HVLK)
YUV output
enable (TVPOE)
HSYNC, VSYNC/PALI,
AVID, FID/GLCO
output enable
Vertical blanking
on/off
Clock output
enable
VBKO (pin 27) function select:
0 = GPCL (default)
1 = VBLK
GPCL (data is output based on state of bit 5):
0 = GPCL outputs 0 (default)
1 = GPCL outputs 1
GPCL I/O mode select:
0 = GPCL is input (default)
1 = GPCL is output