PSB4860HV4.1 Lantiq, PSB4860HV4.1 Datasheet - Page 62

• Manufacturer Part Number: PSB4860HV4.1
• Manufacturer: Lantiq

Specifications of PSB4860HV4.1

• Lead Free Status / Rohs Status: Supplier Unconfirmed

Data Sheet
The gap detector consists of a speech detector and a subsequent timer. A gap is
detected whenever the speech detector detects no speech for at least time GAPT. The
speech detector has the same signal flow graph and parameters as the speech detectors
SDX or SDR of the speakerphone.
Table 33 shows the registers that hold these parameters.
Table 33
Register # of Bits
SCGAP1 7
SCGAP1 7
SCGAP2 8
SCGAP2 7
SCGAP3 8
SCGAP3 8
SCGAP4 8
SCGAP4 7
Speech Coder - Gap Detector Control Registers
Name
LP2L
LIM
LP1
OFF
PDN
LP2N
PDS
LP2S
Comment
Maximum value of LP2
Limitation of log. amplifier
Time constant LP1
Level offset up to detected noise
Peak decrement PD1 (noise)
Time constant LP2 (noise)
Peak decrement PD1 (speech)
Time constant LP2 (speech)
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PSB 4860
2000-01-14