saa8115hl NXP Semiconductors, saa8115hl Datasheet - Page 29

• Manufacturer Part Number: saa8115hl
• Description: Saa8115hl-04 Digital Camera Usb Interface
• Manufacturer: NXP Semiconductors

Table 50: Detailed description of SNERT compression engine register 0x31
Table 51: Detailed description of SNERT compression engine register 0x32
Table 52: Detailed description of SNERT compression engine register 0x33
Table 53: Detailed description of SNERT compression engine register 0x34
Table 54: Detailed description of SNERT compression engine register 0x35
Table 55: Detailed description of SNERT compression engine register 0x36
Philips Semiconductors
9397 750 07395
Product specification
Bit
Bit
Bit
Bit
Bit
Bit
X
X
X
X
X
X
7
7
7
7
7
7
X
X
X
X
X
6
6
6
6
6
6
1
0
X
X
X
X
X
5
5
5
5
5
5
1
0
X
X
X
X
X
X
4
4
4
4
4
4
X
X
X
X
X
X
3
3
3
3
3
3
X
X
X
X
X
X
2
2
2
2
2
2
1
X
1
X
1
X
1
X
1
X
1
X
X
X
X
X
X
X
0
0
0
0
0
0
Rev. 04 — 10 August 2000
SNERT register 31: VP_C_UVMASK
Parameter
operates an AND between this value and the compression engine input;
can be used to set bit positions in the UV signal to 0 (by default 0x00)
SNERT register 32: VP_C_BITCOST_MSB
Parameter
set the compression ratio; the bitcost determines the maximum number
of bits generated by the compression algorithm for 4 subsequent lines
SNERT register 33: VP_C_BITCOST_LSB
Parameter
set the compression ratio; the bitcost determines the maximum number
of bits generated by the compression algorithm for 4 subsequent lines
SNERT register 34: VP_C_THRESHOLD_MSB
Parameter
output of the video formatter is clipped to this maximum value
SNERT register 35: VP_C_THRESHOLD_LSB
Parameter
threshold must be set to:
(number of UV blocks per band)
SNERT register 36: VP_TR_CONTROL
Parameter
reserved
VGA_FORMAT
INBAND_CONTROL
LLC_OUT_DIV: select the rate at which the video data is transmitted to
the USB core
4 : 2 : 2 (uncompressed only)
4 : 2 : 0
on
off
range [1 to 31]
(DC_COEFF_LENGTH + 2)
Digital camera USB interface
SAA8115HL
© Philips Electronics N.V. 2000. All rights reserved.
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