si3216-x-gm Silicon Laboratories, si3216-x-gm Datasheet - Page 62

• Manufacturer Part Number: si3216-x-gm
• Description: Proslic Programmable Wideband Slic/codec With Ringing/battery Voltage Generation
• Manufacturer: Silicon Laboratories

Si3216
Register 10. Two-Wire Impedance Synthesis Control
Reset settings = 0000_1000
62
Name
Type
Bit
7:6
5:4
2:0
Bit
3
Reserved
TISS[2:0]
CLC[1:0]
Name
TISE
D7
Read returns zero.
Line Capacitance Compensation.
00 = Off
01 = 4.7 nF
10 = 10 nF
11 = Reserved
Two-Wire Impedance Synthesis Enable.
0 = Two-wire impedance synthesis disabled.
1 = Two-wire impedance synthesis enabled.
Two-Wire Impedance Synthesis Selection.
000 = 600 Ω
001 = 900 Ω
010 = Japan (600 Ω + 1 µF); requires external resistor R
011 = 900 Ω + 2.16 µF; requires external resistor R
100 = CTR21 (270 Ω + 750 Ω || 150 nF).
101 = Australia/New Zealand #1 (220 Ω + 820 Ω || 120 nF).
110 = Slovakia/Slovenia/South Africa (220 Ω + 820 Ω || 115 nF).
111 = China (200 Ω + 680 Ω || 100 nF).
D6
D5
CLC[1:0]
R/W
Preliminary Rev. 0.91
D4
TISE
R/W
D3
Function
D2
ZREF
ZREF
= 18 k Ω and C3, C4 = 220 nF.
TISS[2:0]
R/W
D1
= 12 k Ω and C3, C4 = 100 nF.
D0