參數(shù)資料
型號(hào): TCM38C17
廠(chǎng)商: Intersil Corporation
英文描述: ()
中文描述: ()
文件頁(yè)數(shù): 5/7頁(yè)
文件大?。?/td> 106K
代理商: TCM38C17
4-5
FIGURE 12. AN E1 FRAME
CH1
CH2
CH3
CH15
CH16
CH30
FRAMING BYTE
8-BIT TIME SLOT
SIGNALLING BYTE
256 BITS/FRAME
120 BITS ENCODED VOICE
(15 8-BIT CHANNELS)
120 BITS ENCODED VOICE
(15 8-BIT CHANNELS)
30 CHANNELS/FRAME X 8 BITS/CHANNEL + 2 OVERHEAD BYTES =
240 + 16 BITS = 256 BITS/FRAME
8000 FRAMES/SECOND X 256 BITS/FRAME = 2.048 MBP
FIGURE 13. FRAME SYNC TIMING
125
μ
s
256 MCLK
31.25
μ
s
31.25
μ
s
31.25
μ
s
31.25
μ
s
64 CLOCKS 31.25
μ
s
2.048MHz MCLK
8 CLOCKS
CHANNEL 0
DATA IN/OUT
CHANNEL 1
DATA IN/OUT
CHANNEL 2
DATA IN/OUT
CHANNEL 3
DATA IN/OUT
0FS
1FS
2FS
3FS
PCM
IN/OUT
0FS
1FS
2FS
3FS
Application Note 9852
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