SAA7108AE Datasheet, PDF (112/208 Pages) NXP Semiconductors – HD-CODEC

NXP Semiconductors
SAA7108AE; SAA7109AE
HD-CODEC
Table 66. Gain U and gain U MSB, black level registers, subaddresses 5Bh and 5Dh, bit description
Subaddress Bit
Symbol
Conditions
Remarks
5Bh
7 to 0
GAINU[8:0]^[1]
white-to-black = 92.5 IRE GAINU = −2.17 × nominal to +2.16 × nominal
5Dh
7
GAINU = 0
output subcarrier of U contribution = 0
GAINU = 118 (76h)
output subcarrier of U contribution = nominal
white-to-black = 100 IRE GAINU = −2.05 × nominal to +2.04 × nominal
GAINU = 0
output subcarrier of U contribution = 0
GAINU = 125 (7Dh)
output subcarrier of U contribution = nominal
6
-
must be programmed with logic 0 to ensure compatibility to future
enhancements
5 to 0
BLCKL[5:0]^[2]
white-to-sync = 140 IRE^[3] recommended value: BLCKL = 58 (3Ah)
BLCKL = 0^[3]
output black level = 29 IRE
BLCKL = 63 (3Fh)^[3]
output black level = 49 IRE
white-to-sync = 143 IRE^[4] recommended value: BLCKL = 51 (33h)
BLCKL = 0^[4]
output black level = 27 IRE
BLCKL = 63 (3Fh)^[4]
output black level = 47 IRE
[1] Variable gain for C_B signal; input representation in accordance with ‘ITU-R BT.601’.
[2] Variable black level; input representation in accordance with ‘ITU-R BT.601’.
[3] Output black level/IRE = BLCKL × 2/6.29 + 28.9.
[4] Output black level/IRE = BLCKL × 2/6.18 + 26.5.
Table 67. Gain V and gain V MSB, blanking level registers, subaddresses 5Ch and 5Eh, bit description
Subaddress Bit
Symbol
Conditions
Remarks
5Ch
7 to 0
GAINV[8:0]^[1]
white-to-black = 92.5 IRE GAINV = −1.55 × nominal to +1.55 × nominal
5Eh
7
GAINV = 0
output subcarrier of V contribution = 0
GAINV = 165 (A5h)
output subcarrier of V contribution = nominal
white-to-black = 100 IRE GAINV = −1.46 × nominal to +1.46 × nominal
GAINV = 0
output subcarrier of V contribution = 0
GAINV = 175 (AFh)
output subcarrier of V contribution = nominal
6
-
must be programmed with logic 0 to ensure compatibility to future
enhancements
5 to 0
BLNNL[5:0]^[2]
white-to-sync = 140 IRE^[3] recommended value: BLNNL = 46 (2Eh)
BLNNL = 0^[3]
output blanking level = 25 IRE
BLNNL = 63 (3Fh)^[3]
output blanking level = 45 IRE
white-to-sync = 143 IRE^[4] recommended value: BLNNL = 53 (35h)
BLNNL = 0^[4]
output blanking level = 26 IRE
BLNNL = 63 (3Fh)^[4]
output blanking level = 46 IRE
[1] Variable gain for C_R signal; input representation in accordance with ‘ITU-R BT.601’.
[2] Variable blanking level.
[3] Output black level/IRE = BLNNL × 2/6.29 + 25.4.
[4] Output black level/IRE = BLNNL × 2/6.18 + 25.9; default after reset: 35h.
SAA7108AE_SAA7109AE_3
Product data sheet
Rev. 03 — 6 February 2007
© NXP B.V. 2007. All rights reserved.
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