TDA8295 Datasheet, PDF (45/77 Pages) NXP Semiconductors – Digital global standard low IF demodulator for analog TV and FM radio

NXP Semiconductors
TDA8295
Digital global standard low IF demodulator for analog TV and FM radio
Table 55. DAC_REF_CLK_CTL register (address 37h) bit description
Legend: * = default value.
Bit Symbol
Access Value Description
7
-
R/W -
not used
6
DA_CLK_INV R/W
For debugging purposes, the DAC clock polarity can be
inverted.
0
inverted polarity
1*
normal polarity
5
DA_PLL_BYP R/W
If active, the clock PLL for DAC sampling can be
bypassed. Then, the crystal output is directly taken for
DAC sampling.
0*
Normal mode
1
Bypass mode
4 to 1 B_REF[3:0] R/W
For accuracy, one external resistor connected to
pin RSET and board ground controls the bias current.
Moreover, B_REF permits to adjust this bias current from
−7 % to +7 % (see Section 13.3). Format is signed
binary.
1111 minimum fine current
0000* nominal fine current
0111 maximum fine current
0
PD_DA_REF R/W
When HIGH, PD_DA_REF sets the reference module
into its Power-down mode.
0*
Normal mode
1
Power-down mode
TDA8295_1
Product data sheet
Rev. 01 — 4 February 2008
© NXP B.V. 2008. All rights reserved.
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