STV0196 datasheet(6/23 Pages) STMICROELECTRONICS

6 / 23 page

FUNCTIONAL DESCRIPTION (continued)

I.4 - Register Map (continued)

IDENTIFICATION REGISTER (Read only)

Reset Value : Hex83 for STV0196B,

Hex 81 for STV0196

TIMING LOOP : TIME CONSTANT (R/W)

Reset Value : Hex 45

beta_tmg coefficient

alpha_tmg coefficient

Istr

external VCO/VCXO slope polarity (0)

positive, (1) negative

TIMING FREQUENCY REGISTER (R/W)

Signed value ranging from 80 to 7F.

CARRIER LOOP REGISTER (R/W)

Reset Value : Hex A3

beta_carrier coefficient

unused

alpha_carrier coefficient

Deratator on (1), off (0)

DEROTATOR FREQUENCY REGISTER (R/W)

Signed value ranging from 80 to 7F.

CARRIER OFFSET EVALUATOR (Read only)

Signed value ranging from 80 to 7F.

AGC CONTROL REGISTER (R/W)

Reset Value : 18 Hex.

AGC reference level m

unused

Iagc

AGC INTEGRATOR (R/W)

Signed value ranging from 80 to 7F.

AGC COEFFICIENT

G[2..0] AGC coefficient

unused

C/N INDICATOR (Read only)

Value ranging from 00 to FF.

STV0196B

6/23

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