STV82X7 datasheet(93/156 Pages) STMICROELECTRONICS

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STV82x7

DC_REMOVAL_L

FM DC Offset Left Registerl

DC_REMOVAL_R

FM DC Offset Right Register

Address: 91h

Type: R

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

DC_REMOVAL_L[7:0]

Bit Name

Reset

Function

DC_REMOVAL_L[7:0]

0000 0000

Displays (in two’s complement format) the FM (or AM) DC offset level after demodulation on

channel 1 (and removed automatically).

In FM mode, the DC offset value gives a direct value of the carrier frequency offset which is

used to compensate the DCO with the CAROFFSET1 value in the event of an out-of-standard

offset. The range and the resolution depend upon the FM bandwidth programmed defined in

Address: 92h

Type: R

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

DC_REMOVAL_R[7:0]

Bit Name

Reset

Function

DC_REMOVAL_R[7:0]

0000 0000

Displays (in two’s complement format) the FM (or AM) DC offset level after demodulation on

channel 2 (and removed automatically).

In FM mode, the DC offset value gives a direct value of the carrier frequency offset which is

used to compensate the DCO with the CAROFFSET2 value in the event of an out-of-

standard offset. The range and the resolution depend upon the FM bandwidth programmed

defined in register BCOEFF2. See Table 21.

Table 21: DC_REMOVAL_L/R Range and Resolution

FM mode

Range (kHz)

Resolution (kHz)

Small

± 96

0.750

Standard & A2 Standard

± 192

1.5

Medium

± 384

Large

± 768

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