Bt860/861
5.0 Serial Programming Interface and Registers
5.4 Register Detail
Multiport YCrCb to NTSC/PAL /SECAM
Register 1D
Default
Value
Register
D7
D6
D5
D4
D3
D2
D1
D0
1D
01
DIS_XTAL
DIS_SCADJ
SYNC_CFG
DIS_PLL
BY_PLL
CLKO_DIS
EACTIVE
CROSSFILT
DIS_XTAL
Disable Crystal Circuitry
0 = Normal operation.
1 = Power down crystal oscillator circuitry.
DIS_SCADJ
SYNC_CFG
Disable Automatic Subcarrier Adjust
0 = Normal operation.
1 = Disable automatic subcarrier adjustment during locking.
Sync Configuration
0 = VSYNC* and HSYNC* pins are configured as inputs.
1 = SLAVE and EN_656 registers determine the configuration of VSYNC* and HSYNC* pins.
See Table 2-2.
DIS_PLL
Sleep PLL
0 = Enable PLL.
1 = Disable PLL.
For lower power consumption, disable PLL when not in use.
BY_PLL
Bypass PLL
1 = Bypass PLL.
0 = Channel XTAL clock through PLL.
CLKO_DIS
EACTIVE
CLKO Disable
0 = Enable CLKO pin.
1 = Disable CLKO pin.
Enable Active Video
0 = Black burst video output.
1 = Enable normal video output.
CROSSFILT
SECAM Cross Color Filter
0 = Apply SECAM luma cross color reduction filter.
1 = Bypass the filter (turn this off when using NTSC/PAL).
Register 1E
Default
Register
D7
D6
D5
D4
D3
D2
D1
D0
Value
SYNC_AMP[7:0]
1E
E5
SYNC_AMP[7:0]
Sync Tip to Blank Amplitude
Measured in LSB increments.
1 LSB = 1.25 V
D860DSA
Conexant
5-25
CONEXANT [ CONEXANT SYSTEMS, INC ]
