參數資料
型號: SI3211-KT
廠商: Silicon Laboratories Inc
文件頁數: 92/148頁
文件大?。?/td> 0K
描述: IC SLIC/CODEC PROG 1CH 38TSSOP
標準包裝: 50
系列: ProSLIC®
功能: 用戶線路接口概念(SLIC),CODEC
接口: PCM,SPI
電路數: 1
電源電壓: 3.3V,5V
電流 - 電源: 88mA
功率(瓦特): 700mW
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 38-TFSOP(0.173",4.40mm 寬)
供應商設備封裝: 38-TSSOP
包裝: 管件
包括: BORSCHT 功能,DTMF 生成和解碼,F(xiàn)SK 來電形顯示接收生成,脈沖測量生成,振鈴和電池電壓
Si3210/Si3211
48
Rev. 1.61
Not
Recommended
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The pulse metering oscillator has a volume envelope (linear ramp) on the on/off transitions of the oscillator. The
volume value is incremented by the value in the PLSD register (indirect Register 23) at an 8 kHz rate. The
sinusoidal generator output is multiplied by this volume before being sent to the DAC. The volume will ramp from 0
to 7FFF in increments of PLSD; so, the value of PLSD will set the slope of the ramp. When the pulse metering
signal is turned off, the volume will ramp to 0 by decrementing according to the value of PLSD.
Figure 24. Pulse Metering Volume Envelope
Table 33. Associated Pulse Metering Generator Registers
Parameter
Description / Range
Register Bits
Location
Pulse Metering Frequency
Coefficient
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).
Pulse Metering Oscillator
Volum e
+/–
PLSD
To DAC
Clip to 7FFF or 0
8 Khz
X
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