STV0299B datasheet(24/36 Pages) STMICROELECTRONICS

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STV0299B

5REGISTER LIST (continued)

24/36

AGC2 INTEGRATOR REGISTERS (refer to

Section 4.2.5 on page 12)

AGC2I1 (MSB)

[7:0]

AGC2 Integrator MSB Bits (Not Signed)

AGC2I2 (LSB)

[7:0]

AGC2 Integrator LSB Bits (Not Signed)

TIMING FREQUENCY REGISTER (refer to

Section 4.3.1 on page 13)

RTF

[7:0]

Signed Number

VSTATUS REGISTER (Read Only) (refer to

Section 4.6.3 on page 16)

VSTATUS

Carrier Found Flag

When the Carrier Found (CF) flag (see Chapter 4.4 on page 14) is

set, it indicates that a QPSK signal is present at the input of the Viterbi

decoder.

[6:5]

Not relevant.

Puncture Rate Found

The Puncture Rate Found (PRF) bit indicates the state of the punc-

ture rate research: 0 for searching and 1 when found. This bit is irrele-

vant in manual mode.

Locked/Searching Sync Word

The LK bit indicates the state of the sync word search: 0 for searching

and 1 when found.

[2:0]

Current Puncture Rate, PR[2:0]

The Current Puncture Rate (CPR) bits hold the current puncture rate

indices, as follows:

100: Basic 1/2 (modes DVB and DSS) or Punctured 1/2 (reserved

mode)

000: Punctured 2/3

001: Punctured 3/4

010: Punctured 5/6

011: Punctured 7/8 (modes DVB and DSS) or 6/7 (reserved mode)

CARRIER LOCK DETECTOR VALUE REGISTER (refer to

Section 4.4.2 on page 14)

CLDI

[7:0]

Signed Number

ERROR COUNT REGISTERS (refer to

Section 4.6.4 on page 16)

ERRCNT_HIGH

[7:0]

MSB byte (Not Signed)

ERRCNT_LOW

[7:0]

LSB byte (Not Signed)

SYMBOL FREQUENCY REGISTERS (refer to

Section 4.3.1 on page 13)

SFRH

[7:0]

Symb_freq (MSBs)

The reset value of Hex 800000 corresponds to fM_CLK/2.

SFRM

[7:0]

Symb_freq (Middle SBS)

SFRL

[7:4]

Symb_freq (LSBS)

[3:0]

These bits must be programmed to zero.

CARRIER FREQUENCY REGISTER (refer to

Chapter 4.4 on page 14)

CFRM

[7:0]

Derotator Frequency (MSB) (signed value)

CFRL

[7:0]

Derotator Frequency (LSB) (signed value)

NOISE INDICATOR REGISTERS (Read Only) (refer to

Chapter 4.5 on page 14)

NIRH

[7:0]

Noise Indicator (MSB) (Not Signed)

NIRL

[7:0]

Noise Indicator (LSB) (Not Signed)

Name

HEX

Address

Reset

Value

Bit

Position

Signal Description

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