參數(shù)資料
型號: SI3212
廠商: Electronic Theatre Controls, Inc.
元件分類: Codec
英文描述: PROSLIC PROGRAMMABLE CMOS SLIC/CODEC WITH RINGING/BATTERY VOLTAGE GENERATION
中文描述: ProSLIC產(chǎn)品可編程的CMOS用戶接口/有振鈴編解碼器/電池電壓生成
文件頁數(shù): 47/122頁
文件大小: 1950K
代理商: SI3212
Si3210/Si3211/Si3212
Preliminary Rev. 1.11
47
Figure 29. Example, IDL2 Long FSYNC, B2, 10-Bit Mode (TXS/RXS = 10)
Figure 30. GCI Example, Timeslot 1 (TXS/RXS = 0)
Companding
The ProSLIC supports both
μ
-255 Law and A-Law companding formats in addition to linear data. These 8-bit
companding schemes follow a segmented curve formatted as sign bit, three chord bits, and four step bits.
μ
-255
Law is more commonly used in North America and Japan, while A-Law is primarily used in Europe. Data format is
selected via the PCMF register. Tables 32 and 33 define the
μ
-Law and A-Law encoding formats.
0
1
7
6
5
4
3
2
16
15
14
13
12
11
10
9
8
18
17
MSB
LSB
MSB
LSB
HI-Z
HI-Z
PCLK
FSYNC
PCLK_CNT
DRX
DTX
0
1
7
6
5
4
3
2
16
15
14
13
12
11
10
9
8
18
17
MSB
LSB
HI-Z
HI-Z
PCLK
FSYNC
PCLK_CNT
DRX
DTX
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SI3212-BT PROSLIC PROGRAMMABLE CMOS SLIC/CODEC WITH RINGING/BATTERY VOLTAGE GENERATION
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