參數(shù)資料
型號: ST75C540FP-A
廠商: 意法半導(dǎo)體
英文描述: SUPER INTEGRATED DEVICESWITH DSP, AFE & MEMORIES FORTELEPHONY,MODEM, FAXOVERINTERNET& POTSLINES
中文描述: 超級綜合DEVICESWITH數(shù)字信號處理器,模擬前端
文件頁數(shù): 31/84頁
文件大?。?/td> 599K
代理商: ST75C540FP-A
Parameters CODERandDECODER Modes
In the VOCODER Modes, either CODER or DECODER, (CONF_OPER equals 2 or 8) the
parametershavethe followingmeaning:
Field
Byte
1
3
Pos.
3..0
0
Value
-
0
1
0
1
00
01
10
11
0
1
0
1
0
1
0
1
Definition
CONF_OPER
CONF_CODE
Define mode : see table above
Low bit rate coded
ADPCM coded
Decoder post filter off
Decoder post filter on (not in ADPCM)
ADPCM 32000 bps
ADPCM 24000 bps
ADPCM 16000 bps
Reserved
Line echo canceller disabled
Line echo canceller enabled
Coder source is line input
Coder source is audio input
Coder silence supressor disabled
Coder silence supressor enabled
Low bit rate decoder disable error correction
Low bit rate decoder enable error correction
CONF_VPF
3
1
CONF_VASP
3
3..2
CONF_EC
3
4
CONF_SRC
3
5
CONF_SUPSIL
3
6
CONF_ERCOR
3
7
Parameters ROOM-MONITORMode
In the ROOM MONITOR Mode (CONF_OPER equals 9) the parameters have the following
meaning:
Field
Byte
1
3
Pos.
3..0
4
Value
1001
0
1
Definition
CONF_OPER
CONF_EC
Define ROOM-MONITOR mode
Line echo canceller disabled
Line echo canceller enabled
Parameters HANDSET/HANDSFREE Mode
In the HANDSET/HANDSFREE mode (CONF_OPER equals C), the parameters have the
following meaning:
Field
Byte
1
3
Pos.
3..0
6
Value
1100
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Definition
CONF_OPER
CONF_INHINI
Define HANDSET/HANDSFREE mode
Init all telephony parameters
Disable initof telephony parameters
Handset mode
Handsfree mode
Line echo canceller enabled
Line echo canceller disabled
Audio echo canceller enabled
Audio echo canceller disabled
Full duplex mode enabled
Half duplex mode enabled
Softclipping enabled on Rx
Softclipping disabled on Tx
AGC active
AGC frozen
Softclipping enabled on Tx
Softclipping disabled on Rx
CONF_HFREE
3
7
CONF_LEC
4
0
CONF_AEC
4
1
CONF_FULLD
4
2
CONF_SOFTRx
4
3
CONF_AGC
4
4
CONF_SOFTTx
4
5
VII - COMMAND SET DESCRIPTION
(continued)
ST75C530- ST75C540
31/84
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