參數(shù)資料
型號(hào): PEB2265
廠商: SIEMENS AG
元件分類: Codec
英文描述: Two Channel Codec Filter with IOM㈢-2 Interface (IOM㈢-2 - SICOFI㈢-2)
中文描述: 雙信道編解碼器與國際移民組織㈢-2接口(移徙㈢-2 - SICOFI㈢-2)
文件頁數(shù): 28/77頁
文件大?。?/td> 851K
代理商: PEB2265
PEB 2265
Programming the IOM
-2 – SICOFI
-2
Semiconductor Group
28
1997-07-01
3.3.2
CR2 Configuration Register 2
TH-Sel
2 bit field to select one of two programmed TH-filter coefficient sets
TH-Sel = 0 0: TH-filter coefficient set 1 is selected
TH-Sel = 0 1: TH-filter coefficient set 2 is selected
Level Metering function
1)
LM = 0:
level metering function is disabled
LM = 1:
level metering function is enabled
Result of Level Metering function (this bit can not be written)
LMR = 0:
level detected was lower than the reference
LMR = 1:
level detected was higher than the reference
PCM - law selection
LAW = 0:
A-Law is selected
LAW = 1:
μ
-Law (μ255 PCM) is selected
Linear mode selection
LIN = 0:
PCM-mode is selected
LIN = 1:
linear mode is selected
2)
User programmed frequency or fixed frequency is selected
PTG2 = 0:
fixed frequency for tone generator 2 is selected (1 kHz)
PTG2 = 1:
programmed frequency for tone generator 2 is selected
User programmed frequency or fixed frequency is selected
PTG1 = 0:
fixed frequency for tone generator 1 is selected (1 kHz)
PTG1 = 1:
programmed frequency for tone generator 1 is selected
LM
LMR
LAW
LIN
PTG2
PTG1
1)
Explanation of the level metering function:
A signal fed to A/μ-Law compression via AX- and HPX-filters (from a digital loop, or externally via VIN), is
rectified, and the power is measured. If the power exceeds a certain value, loaded to XR4, bit LMR is set to
‘1’. The power of the incoming signal can be adjusted by AX-filters.
During Linear operation only one 16 bit voice channel, is available per time slot. Depending on the address bit
(AD) the voice-data of channel 1 or 2 is transmitted. The other voice channel is not available during this time.
2)
Bit
7
6
5
4
3
2
1
0
TH-Sel
LM
LMR
LAW
LIN
PTG2
PTG1
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