TDA18271HD/C2.551 NXP Semiconductors, TDA18271HD/C2.551 Datasheet - Page 19
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TDA18271HD/C2.551
Manufacturer Part Number
TDA18271HD/C2.551
Description
Manufacturer
NXP Semiconductors
Datasheet
1.TDA18271HDC2.551.pdf
(70 pages)
Specifications of TDA18271HD/C2.551
Lead Free Status / Rohs Status
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Table 24.
Legend: * power-on reset value.
TDA18271HD_4
Product data sheet
Address
10h
11h
12h
EB1 to EB23 - Extended bytes 1 to 23 (address 10h to 26h) bit description
Register
EB1
EB2
EB3
9.3.12 Description of Main post-divider byte
9.3.13 Description of Main divider bytes 1, 2 and 3
9.3.14 Description of Extended bytes 1 to 23
Table 22.
Legend: * power-on reset value.
Table 23.
Legend: * power-on reset value.
Bit
7 to 3
2
1
0
7 to 0
7 to 0
Bit
7
6 to 0
Address Register Bit
0Dh
0Eh
0Fh
Symbol
IF_NOTCH
MAIN_POST_DIV[6:0]
Symbol
EB1[7:3]
CALVCO_FORLON R
AGC1_ALWAYS_
MASTERN
AGC1_FIRSTN
EB2[7:0]
EB3[7:0]
MD1
MD2
MD3
MPD - Main post-divider byte (subaddress 0Ch) bit description
MD1, MD2 and MD3 - Main divider bytes 1, 2 and 3 (address 0Dh, 0Eh and 0Fh) bit
description
7
6 to 0 MAIN_DIV[22:16] R/W
7 to 0 MAIN_DIV[15:8]
7 to 0 MAIN_DIV[7:0]
Rev. 04 — 19 May 2009
Symbol
-
Access
R
R
R
R/W
R/W
Access
R/W
R/W
Value
1 1111*
1*
0
1*
0
1*
0
0000 0001*
1000 0100*
Value
0*
000
Access Value Description
R/W
R/W
R/W
0*
00h*
00h*
00h*
Description
extended byte 1
determines VCO used during Normal
mode operations
enables AGC1 normal operation
whatever the tuner type (master or
slave)
determines which AGC will be updated
when detectors 1 and 2 are active
extended byte 2
extended byte 3
Description
adds a DC notch in IF for better
adjacent channels rejection; depends
on standards; see
LO synthesizer post-divider; see
Table 47
LO VCO is used
CAL VCO is used
normal operation for the master;
6 dB fixed for the slave
normal operation for both the master
and the slave
AGC1 and AGC2 both updated
AGC1 has priority on AGC2
must be set to 0
LO synthesizer main divider bits
TDA18271HD
© NXP B.V. 2009. All rights reserved.
Table 43
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