Intel MD566X - Manual (Page 95)

56K V.92 Data, Fax, and Voice Chipset
Programmer’s Guide Intel Confidential 95
+VSM=m
(cont.)
manufac-
turer-
specified
Compression Method Selection: (cont.)
Transmission: Range: n = 0
n = 0* Disabled
When receiving voice, this parameter changes the level of noise
that the DCE treats as silence. A higher “n” number raises the
threshold of noise detection.
Reception: Range: n = 0
n = 0* Disables DCE silence compression
n =increments of 1 Raises noise detection threshold
Silence Expansion: This command enables the DTE to modify the
amount of silence expansion. This parameter represents the maximum period of
silence the DCE expands a period of silence compressed by the parame-
ter. The DCE ignores the parameter if is zero.
NOTES:
1) Because of the high UART data rates, these compression/sample rates may
not be applicable to the serial host interface (that is, serial box modem)
designs (see ATI5 to determine if the modem is using the serial host inter-
face). For parallel and PC Card host interfaces, the modem ignores the
UART data rate.
2) DTMF detection is provided for all sample rates.
Table 6-1. Voice Mode Command Descriptions (Continued)
Compression
Sampling
Rate
Serial
Data Rate
(bps)
UART
Data Rate
(bps)
Hard Disk
(Bytes/sec.)
Note
= CL1* 4800 48,000 57,600 4800
7200 72,000 115,200 7200 1
8000 80,000 115,200 8000 1
9600 96,000 115,200 9600 1
11025 110,250 115,200 11,025 1
= AD3 4800 18,000 19,200 1800
7200 27,000 38,400 2700
8000 30,000 38,400 3000
9600 36,000 38,400 3600
11025 41,344 57,600 4135
= AD4 4800 24,000 38,400 2400
7200 36,000 38,400 3600
8000 40,000 57,600 4800
9600 48,000 57,600 4800
11025 55,125 57,600 5513
= LIN1 4800 48,000 57,600 4800
7200 72,000 115,200 7200 1
8000 80,000 115,200 8000 1
9600 96,000 115,200 9600 1
11,025 110,250 115,200 11,025 1
= LIN2 4800 96,000 115,200 9600 1