參數(shù)資料
型號: SI3212-KT
廠商: Electronic Theatre Controls, Inc.
元件分類: Codec
英文描述: PROSLIC PROGRAMMABLE CMOS SLIC/CODEC WITH RINGING/BATTERY VOLTAGE GENERATION
中文描述: ProSLIC產(chǎn)品可編程的CMOS用戶接口/有振鈴編解碼器/電池電壓生成
文件頁數(shù): 85/122頁
文件大?。?/td> 1950K
代理商: SI3212-KT
Si3210/Si3211/Si3212
Preliminary Rev. 1.11
85
Reset settings = 0110_0001
Register 65. External Bipolar Transistor Control
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Name
SQH
CBY
ETBE
ETBO[1:0]
ETBA[1:0]
Type
R/W
R/W
R/W
R/W
R/W
Bit
Name
Function
7
Reserved
Read returns zero.
6
SQH
Audio Squelch.
0 = No squelch.
1 = STIPAC and SRINGAC pins squelched.
5
CBY
Capacitor Bypass.
0 = Capacitors CP (C1) and CM (C2) in circuit.
1 = Capacitors CP (C1) and CM (C2) bypassed.
4
ETBE
External Transistor Bias Enable.
0 = Bias disabled.
1 = Bias enabled.
3:2
ETBO[1:0]
External Transistor Bias Levels—On-Hook Transmission State.
DC bias current which flows through external BJTs in the on-hook transmission state.
Increasing this value increases the compliance of the ac longitudinal balance circuit.
00 = 4 mA
01 = 8 mA
10 = 12 mA
11 = Reserved
1:0
ETBA[1:0]
External Transistor Bias Levels—Active Off-Hook State.
DC bias current which flows through external BJTs in the active off-hook state. Increasing
this value increases the compliance of the ac longitudinal balance circuit.
00 = 4 mA
01 = 8 mA
10 = 12 mA
11 = Reserved
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