pnx8511 NXP Semiconductors, pnx8511 Datasheet - Page 48

• Manufacturer Part Number: pnx8511
• Description: Analog Companion Chip
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Table 29:
* indicates not present in secondary video channel
9397 750 12612
Product data
Bit
7:0
Offset 0x5D - BLCKL
7
6
5:0
Offset 0x5E - BLNNL
7
6
5:0
Symbol
GAINV
GAINU
DECOE
BLCKL
GAINV
DECPH
BLNNL
PNX8510/11 video registers
Access Value
R/W
R/W
R/W
R/W
R/W
R/W
R/W
…continued
0xaf
0
0
0x33
0
0
0x35
Rev. 04 – 12 January 2004
Description
Variable gain for Cr signal; input representation is in accordance
with CCIR656.
White to black = 92.5 IRE
GAINV can be adjusted in a range from -1.55 x nominal
to 1.55 x nominal
GAINV=0 (output subcarrier contribution of V = 0)
GAINV=0xA5 (output subcarrier contribution of V = nominal)
White to black = 100 IRE
GAINV can be adjusted in a range from -1.46 x nominal
to 1.46 x nominal
GAINV=0 (output subcarrier contribution of V = 0)
GAINV=0xAF (output subcarrier contribution of V = nominal)
GAINV=0x7F (nominal Gain for Secam encoding)
Bit 8 of register 0x5B
Odd/even field control via RTC interface
0 = Disabled
1 = Enabled
Variable black level; input representation is in accordance with
CCIR656.
White to sync = 140 IRE
recommended BLCKL=0x3A
BLCKL=0 (output black level = 29 IRE)
BLCKL=0x3F (output black level = 49 IRE)
output black level/IRE=BLCKL x 2/6.29+28.9
White to sync = 143 IRE
recommended BLCKL=0x33
BLCKL=0 (output black level = 27 IRE)
BLCKL=0x3F (output black level = 47 IRE)
output black level/IRE=BLCKL x 2/6.18+26.5
Bit 8 of register 0x5C
Subcarrier phase reset control via RTC interface
0 = Disabled
1 = Enabled
Variable blanking level
White to sync = 140 IRE
recommended BLCKL=0x2E
BLNNL=0 (output black level = 26 IRE)
BLNNL=0x3F (output black level = 46 IRE)
output black level/IRE=BLCKL x 2/6.29+25.4
White to sync = 143 IRE
recommended BLCKL=0x35
BLNNL=0 (output black level = 26 IRE)
BLNNL=0x3F (output black level = 46 IRE)
output black level/IRE=BLCKL x 2/6.18+25.9
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
PNX8510/11
Analog companion chip
48 of 92