msm7664 Oki Semiconductor, msm7664 Datasheet - Page 42

• Manufacturer Part Number: msm7664
• Description: Ntsc/pal Digital Video Decoder
• Manufacturer: Oki Semiconductor

Note:
¡ Semiconductor
Mode Register B (MRB)
Default
Recommended Value
MRB[7:6]
MRB[5]
MRB[4]
MRB[3:2]
MRB[1:0]
Note: Adaptive comb filter
Register Name
In the FIFO-1 mode, the number of pixels per 1H is output at the standard setting value.
In the FIFO-2 mode, the number of pixels per 1H is fixed in accordance with an input
H period and output.
In the FM-1 and FM-2 modes, a decoded result is output without any changes
according to the SYNC signal. A field memory is required externally to output the fixed
number of pixels in those modes. In the FM-2 mode, a field memory control signal is
output from the pin M[7:4].
Non-adaptive comb filter
Synchronization mode
Color killer mode
Blue Back
Clamp mode
Y/C separation mode
MRB[7] MRB[6] MRB[5] MRB[4] MRB[3] MRB[2] MRB[1] MRB[0]
0
0
0
0
Write only
2/3-line comb filter for NTSC
Comb filter/trap filter for PAL
3-line comb filter for NTSC
2-line cosine comb filter for PAL
*00: Analog clamp
*00: FIFO-1 (use internal memory)
*00: Adaptive comb filter (Correlation of 3 lines is
Clamp mode is selected.
01: FIFO-2 (use internal memory)
10: FM-1 (use external memory, external control)
11: FM-2 (use external memory, control signals
01: Analog, Digital hybrid clamp
10: Digital clamp (HSY clamp)
11: Undefined
01: Non-adaptive comb filter (Operating mode is
10: Use trap filter. (Comb filter is not used.)
11: Undefined
0
0
*0: Auto color killer (Chrominance signal level is
*1: Forced color killer (Chrominance signal level
*1: AUTO (Blue Back is output when synchro-
0: OFF (Video signal is demodulated and output
supplied from M[7:4])
set to "0" if the color burst level is below the
specified value.)
is forced to "0".)
regardless of synchronization detection.)
nization is not detected.)
monitored and operating mode is selected.)
always fixed.)
1
1
<address: $01>
0
0
0
0
PEDL7664-01
0
0
MSM7664
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0
0