MB86294 Datasheet, PDF (214/305 Pages) Fujitsu Component Limited. – Grraphiics Controller specifications

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 Reserve CVLPF Reserve CHLPF
Reserve
R/W
R0
R/W
R0
R/W
R0
Initial value
0
0
0
0
0
This register sets the Low Pass Filter Coefficient. It specifies independently in 2-bit coefficient code with
a luminance signal (Y) and a color-difference signal (C). A coefficient is a right-and-left symmetrical
coefficient.
A Vertical low path filter consists of FIR filters of three taps. A coefficient is specified in the following
register.
Bit 27 to 26 CVLPF_Y (Capture Vertical LPF coefficient Y)
Sets Y part of vertical LPF coefficient code
CVLPF_Y K0
K1
K2
2’b00
0
1
0
2’b01
1/4
2/4
1/4
2’b10
2’b11
3/16
10/16
Reserve
3/16
Bit 25 to 24 CVLPF_C (Capture Vertical LPF coefficient C)
Sets C part of vertical LPF coefficient code
CVLPF_C K0
K1
K2
2’b00
0
1
0
2’b01
2’b10
1/4
3/16
2/4
10/16
1/4
3/16
2’b11
Reserve
A horizontal low path filter consists of FIR filters of five taps. A coefficient is specified in the following
register.
Bit 19 to 18 CHLPF_YI (Capture Horizontal LPF coefficient Y)
Sets Y part of horizontal coefficient code
CHLPF_Y K0
K1
K2
K3
K4
2’b00
0
0
1
0
0
2’b01
0
1/4
2/4
1/4
0
2’b10
0
3/16
10/16 3/16
0
2’b11
3/32
8/32
10/32 10/32
Bit 17 to 16 CHLPF_C (Capture Horizontal LPF coefficient C)
3/32
Sets C part of horizontal coefficient code
CHLPF_C K0
K1
K2
K3
K4
2’b00
0
0
1
0
0
2’b01
0
1/4
2/4
1/4
0
2’b10
2’b11
0
3/16
3/32
8/32
10/16
10/32
3/16
10/32
0
3/32
LPF will be turned off if coefficient code 2'b00 are set up.
MB86294/294S CORAL_LB
Graphics Controller
214
Specifications Rev. 1.0