MB86296 Datasheet, PDF (268/352 Pages) Fujitsu Component Limited. – PCI Graphics Controller Specification

FUJITSU LIMITED PRELIMINARY AND CONFIDENTIAL
CLPF (Capture Low Pass Filter)
Register
address
CaputureBaseAddress + 40h
Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Bit field name Reserved CVLPF Reserved CHLPF
Reserved
R/W
RX
R/W
RX
R/W
RX
Initial value 0
0
0
0
X
This register sets the Low Pass Filter Coefficient. The vertical low pass filter consists of FIR filters
of three taps. The horizontal low pass filter consists of FIR filters of five taps. It specifies
independently in 2-bit coefficient code with a luminance signal (Y) and a chrominance signal (Cb
and Cr) . A low pass filter is OFF (through) in a setup of each coefficient code “00”.
Bit 17 to 16 CHLPF_C (Capture Horizontal LPF coefficient C)
CHLPF_C K0
K1
K2
K3
K4
00
0
0
1
0
0
01
0
1/4
2/4
1/4
0
10
0
3/16
10/16 3/16
0
11
3/32
8/32
10/32 10/32 3/32
Bit 19 to 18 CHLPF_Y (Capture Horizontal LPF coefficient Y)
CHLPF_Y K0
K1
K2
K3
K4
00
0
0
1
0
0
01
0
1/4
2/4
1/4
0
10
0
3/16
10/16
3/16
0
11
3/32
8/32
10/32
10/32
3/32
Bit 25 to 24
CVLPF_C (Capture Vertical LPF coefficient C)
CVLPF_C K0
K1
K2
00
0
1
0
01
1/4
2/4
1/4
10
3/16 10/16 3/16
11
Reserved
Bit 27 to 26
CVLPF_Y (Capture Vertical LPF coefficient Y)
CVLPF_Y K0
K1
K2
00
0
1
0
01
1/4
2/4 1/4
10
3/16
10/16 3/16
11
Reserved
Note:
- In the case of Native RGB mode (NRGB=1), only a setup of CVLPF_Y code becomes
effective.
MB86296S<Coral-PA>
258
Specification Manual Rev0.1