参数资料
型号: SI3216MDCX-EVB
厂商: Silicon Laboratories Inc
文件页数: 105/122页
文件大小: 0K
描述: DAUGHTER CARD W/DISCRETE INTRFC
标准包装: 1
Si3216
Rev. 1.0
83
Not
Recommended
fo
r N
ew
D
esi
gn
s
Reset settings = 0110_0001
Register 65. External Bipolar Transistor Control
Bit
D7D6D5D4D3D2
D1
D0
Name
SQH
CBY
ETBE
ETBO[1:0]
ETBA[1:0]
Type
R/W
Bit
Name
Function
7
Reserved
Read returns zero.
6SQH
Audio Squelch.
0 = No squelch.
1 = STIPAC and SRINGAC pins squelched.
5CBY
Capacitor Bypass.
0 = Capacitors CP (C1) and CM (C2) in circuit.
1 = Capacitors CP (C1) and CM (C2) bypassed.
4ETBE
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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