SAA7115 Datasheet, PDF (140/214 Pages) NXP Semiconductors – PAL/NTSC/SECAM Video Decoder with Adaptive PAL/NTSC Comb Filter, High Performance Scaler, I2C Sliced Data Readback and SQ PIXEL OUTPUT

Philips Semiconductors
CS-PD Hamburg
FUNCTION
CVIP2
Datasheet
SAA7115
Date:
Version:
10/23/01
0.67
NAME
LOGIC
LEVELS
DATA
BITS
Automatic chrominance standard detection control 0 (AUTO0)
NOTE: Automatic chrominance standard detection control 1 (AUTO1) is located at subaddress 14h, D2
The automatic standard detection circuit does not only search and lock to any broadcast standard, but provides also
some default settings dependent on the chosen automatic level. e.g it automatically disables the combfilter or
remodulation functionality if Y/C-mode is selected or a B&W source is present. Also the bandwidths of the internal
filters are adapted to the detected standard.
However, if these setting are not convenient for the customers application, lower auto levels can be chosen, so that
only the standard search and lock is active and all other settings can be programmed independently.
Disabled
00
Auto mode active (highest level), filter settings and Sharpness control are preset
to default values
according to the detected standard and mode (recommended position)
The following registers are automatically set dependent on the following
conditions:
Mode DCVF LCBW LUBW YCOMB CCOMB LUFI CHBW
PAL
0
110
0
p
p
0000 0
comb
PAL
0
000
0
p
p
0110 0
nocomb
PAL Y/C 0
110
0
0
0
0000 1
NTSC 1
110
0
p
p
0000 0
01
comb
NTSC 0
000
0
p
p
0110 0
nocomb
NTSC 1
110
0
0
0
0000 1
AUTO[1:0]
Y/C
SA14:D2,
SA0E: D1
SECAM x
000
1
0
x
1011 0
SECAM x
000
x
0
x
0000 0
Y/C
B&W x
xxx
x
0
x
0000 x
p: programming is required and valid
x: setting has no influence
Y/C-mode has to be selected via BYPS = 1
Auto mode active (medium level), filter settings are preset to default values
according to the detected standard and mode like AUTO[1:0] = 01, with the
following differences:
10
Sharpness control (LUFI[3:0]) is freely programmable
CCOMB is freely programmable
CHBW is freely programmable
Auto mode active (lowest level), automatic standard recognition, but no filter
presets
11
Confidential - NDA required
Filename: SAA7115_Datasheet.fm
page 140
Last edited by H. Lambers