參數(shù)資料
型號： SI3230-E-FT
廠商： Silicon Laboratories Inc
文件頁數(shù)： 36/108頁
文件大?。?/td> 0K
描述： IC SLIC PROG 1CH 38TSSOP
標(biāo)準(zhǔn)包裝： 50
系列： ProSLIC®
功能： 用戶線路接口概念（SLIC）
接口： SPI
電路數(shù)： 1
電源電壓： 3.13 V ~ 5.25 V
電流 - 電源： 88mA
功率（瓦特）： 700mW
安裝類型： 表面貼裝
封裝/外殼： 38-TFSOP（0.173"，4.40mm 寬）
供應(yīng)商設(shè)備封裝： 38-TSSOP
包裝： 管件
包括： DTMF 生成和解碼，F(xiàn)SK 生成
Si3230
Preliminary Rev. 0.96
33
Not
Recommended
fo
r N
ew
D
esi
gn
s
2.5. Pulse Metering Generation
There is an additional tone generator suitable for
generating tones above the audio frequency. This
oscillator is provided for the generation of billing tones
which are typically 12 kHz or 16 kHz. The generator
follows the same algorithm as described in "2.3. Tone
Generation" on page 26 with the exception that the
sample rate for computation is 64 kHz instead of 8 kHz.
The equations are as follows:
where full scale Vrms = 0.85 Vrms for a matched load.
The initial phase of the pulse metering signal is set to 0
internally so there is no register to serve this purpose.
The pulse metering generator timers and associated
pulse metering timer registers are similar to that of the
tone generators. These timers count 8 kHz sample
periods like the other tones even though the sinusoid is
generated at 64 kHz.
Table 28. Recommended Ring Trip Values for Ringing
Ringing
Frequency
NRTP
RPTP
RTDI
Hz
decimal
hex
decimal
hex
decimal
hex
16.667
64
0200
34 mA
3600
15.4 ms
0F
20
100
0320
34 mA
3600
12.3 ms
0B
30
112
0380
34 mA
3600
8.96 ms
09
40
128
0400
34 mA
3600
7.5 ms
07
50
213
06A8
34 mA
3600
5 ms
05
60
256
0800
34 mA
3600
4.8 ms
05
coeff
2
f
64000 Hz
--------------------------
cos
=
PLSCO
coeff
2
15
1
–
=
PLSX
1
4
--- 1
coeff
–
1
coeff
+
------------------------
2
15
1
–
Desired V
rms
Full Scale V
rms
--------------------------------------------
=
Table 29. Associated Pulse Metering Generator Registers
Parameter
Description / Range
Register Bits
Location
Pulse Metering Frequency Coeffi-
cient
Sets oscillator frequency
PLSCO[15:0]
Indirect Register 25
Pulse Metering Amplitude Coefficient
Sets oscillator amplitude
PLSX[15:0]
Indirect Register 24
Pulse Metering Attack/Decay Ramp
Rate
0 to PLSX (full amplitude)
PLSD[15:0]
Indirect Register 23
Pulse Metering Active Timer
0 to 8 seconds
PAT[15:0]
Direct Registers 44 & 45
Pulse Metering Inactive Timer
0 to 8 seconds
PIT[15:0]
Direct Register 46 & 47
Pulse Metering Control
Status and control registers
PSTAT, PMAE,
PMIE, PMOE
Direct Register 35
Note:
The ProSLIC uses registers that are both directly and indirectly mapped. A “direct” register is one that is mapped
directly. An “indirect” register is one that is accessed using the indirect access registers (direct registers 28
through 31).
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