cx25840 Conexant Systems, Inc., cx25840 Datasheet - Page 206

• Manufacturer Part Number: cx25840
• Description: Video Decoder And Broadcast Audio
• Manufacturer: Conexant Systems, Inc.

Register Map
5-64
Horizontal Scaling Low
[7:0]
Horizontal Scaling Mid
[7:0]
Horizontal Scaling High
[7:0]
Horizontal Scaling Control
[7:2]
[1:0]
Vertical Scaling Low
[7:0]
Vertical Scaling High
[7:5]
[4:0]
Bits
Bits
Bits
Bits
Bits
Bits
RW
RW
RW
RZ
RW
RW
RZ
RW
Type
Type
Type
Type
Type
Type
0x00
0x00
0x00
00000
00
0x00
00
0x00
Default
Default
Default
Default
Default
Default
RESERVED
VSCALE_HIGH
HSCALE_LOW
HSCALE_MID
HSCALE_HIGH
RESERVED
HFILT
VSCALE_LOW
Name
Name
Name
Name
Name
Name
Conexant
Least significant byte of Horizontal Scaling Ratio (hscale =
(scaling ratio–1) x 2
Low-pass filter select. This is used in the luma low-pass filter
block to determine which of the three filters or the auto mode
should be used.
00 = Auto Mode
01 = CIF
10 = QCIF
11 = ICON
Most significant byte of Vertical Scaling Ratio
vsf = (2
Middle significant byte of Horizontal Scaling Ratio (HSCALE =
(scaling ratio–1) x 2
Least significant byte of Vertical Scaling Ratio
vsf = (2
Most significant byte of Horizontal Scaling Ratio (HSCALE =
(scaling ratio–1) x 2
16
16
– (scaling ratio – 1) x 2
– (scaling ratio – 1) x 2
20
20
20
).
).
).
Description
Description
Description
Description
Description
Description
9
9
) & 0x1FFF
) & 0x1FFF
CX25840/1/2/3 Data Sheet
Address 0x41D
Address 0x41B
Address 0x418
Address 0x41C
Address 0x419
Address 0x41A
102284B
8/3/05