參數(shù)資料
型號: SI3232PPTX-EVB
廠商: Silicon Laboratories Inc
文件頁數(shù): 45/128頁
文件大?。?/td> 0K
描述: BOARD EVAL W/DISCRETE INTERFACE
標準包裝: 1
系列: ProSLIC®
主要目的: 接口,模擬前端(AFE)
已用 IC / 零件: Si3232
已供物品: 板,CD
Si3232
Preliminary Rev. 0.96
23
Not
Recommended
fo
r N
ew
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esi
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The dc linefeed circuitry generates the necessary TIP/RING I/V characteristics along with loop closure and ring trip
detection. For loop start applications, VTIP–VRING is programmable. The loop current limit, ILIM, is software-
programmable with a range from 18–45 mA.
Figure 8. VTIP–RING vs. ILOOP Characteristic for Loop Start Operation
Table 13. Register and RAM Locations used for Linefeed Control
Parameter
Register /
RAM
Mnemonic
Register/RAM Bits
Programmable
Range
LSB Size
Effective
Resolution
Linefeed
LINEFEED
LF[2:0]
N/A
Linefeed Shadow
LINEFEED
LFS[2:0]
Monitor only
N/A
Battery Feed Control
RLYCON
BATSEL
VBATH/VBATL
N/A
Loop Current Limit
ILIM
ILIM[4:0]
18–45 mA
0.875 mV
0.875 mA
On-Hook Line Voltage
VOC
VOC[14:0]
0 to 63.3 V
4.907 mV
1.005 V
Common Mode Voltage
VCM
VCM[14:0]
0 to 63.3 V
4.907 mV
1.005 V
VOC Delta for Off-Hook
VOCDELTA
VOCDELTA[14:0]
0 to 63.3 V
4.907 mV
1.005 V
VOC Delta Threshold, Low
VOCLTH
VOCTHD[15:0]
0 to 63.3 V
4.907 mV
1.005 V
VOC Delta Threshold, High
VOCHTH
VOCTHD[15:0]
0 to 63.3 V
4.907 mV
1.005 V
Overhead Voltage
VOV
VOV[14:0]
0 to 63.3 V
4.907 mV
1.005 V
Ringing Overhead Voltage
VOVRING
VOVRING[14:0]
0 to 63.3 V
4.907 mV
1.005 V
VOC During Battery Tracking
VOCTRACK
VOCTRACK[15:0]
0 to 63.3 V
4.907 mV
1.005 V
0
10
20
30
40
50
10
20
30
40
50
60
I
LIM = 24 mA
I
LIM
R
O = 600
V
TI
P
RI
NG
(V
)
ILOOP (mA)
V
OC
R
O = 320
Loop Closure
Threshold
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