SI3210-GTR Silicon Laboratories Inc, SI3210-GTR Datasheet - Page 95
SI3210-GTR
Manufacturer Part Number
SI3210-GTR
Description
Manufacturer
Silicon Laboratories Inc
Specifications of SI3210-GTR
Lead Free Status / RoHS Status
Compliant
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Register 65. External Bipolar Transistor Control
Reset settings = 0110_0001
Name
Bit
3:2
1:0
Type
7
6
5
4
Bit
ETBO[1:0]
ETBA[1:0]
Reserved
Name
ETBE
SQH
CBY
D7
Read returns zero.
Audio Squelch.
0 = No squelch.
1 = STIPAC and SRINGAC pins squelched.
Capacitor Bypass.
0 = Capacitors CP (C1) and CM (C2) in circuit.
1 = Capacitors CP (C1) and CM (C2) bypassed.
External Transistor Bias Enable.
0 = Bias disabled.
1 = Bias enabled.
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
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
SQH
R/W
D6
CBY
R/W
D5
ETBE
Rev. 1.45
R/W
D4
Function
D3
ETBO[1:0]
R/W
D2
Si3210/Si3211
D1
ETBA[1:0]
R/W
D0
95
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