Rev. 1.0, 02/00, page 762 of 1141
Table 27.3
Source Signals for Sync Separation
Input
Source
Vsync
Detector
External
SW1
External
SW2
External
SW3
External
SW4
CCMPSL
(Internal
SW5)
VSEL
(Internal
SW6)
Csync/
Hsync
Terminal
CVin2
input
Vsync
Schmitt
Off
On
a
a
0
0
Output
Csync
Schmitt
Off
Off
Open
Input
fixed to
OVss
0
1
Output
Csync
input
Vsync
Schmitt
On
On
a
a
1
0
Input
Csync
Schmitt
On
Off
a
Input
fixed to
OVss
1
1
Input
Hsync/
Vsync
input
Vsync
Schmitt
Off
Off
b
b
1
0
Input
Bits 7 and 6
Csync Separation Comparator Slicing Voltage Select
(CCMPV1 and CCMPV0): Select the slicing voltage for the Csync separation comparator. The
value set by these bits is the slicing level against the sync tip level (–40 IRE). Note that this slicing
level is used only for reference.
Bit 7
Bit 6
CCMPV1
CCMPV0
Description
0
0
The Csync slicing level is 10 IRE
(Initial value)
1
The Csync slicing level is 5 IRE
1
0
The Csync slicing level is 15 IRE
1
The Csync slicing level is 20 IRE