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BT8376EPF Scheda tecnica(PDF) 72 Page - Synaptics Incorporated.

Il numero della parte BT8376EPF
Spiegazioni elettronici  single chip transceivers for T1/E1 and Integrated Service Digital Network (ISDN) primary rate interfaces
PDF  323 Pages
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Produttore elettronici  CONEXANT [Synaptics Incorporated.]
Homepage  https://www.synaptics.com/
Logo CONEXANT - Synaptics Incorporated.

BT8376EPF Scheda tecnica(HTML) 72 Page - Synaptics Incorporated.

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2.0 Circuit Description
Bt8370/8375/8376
2.6 Clock Rate Adapter
Fully Integrated T1/E1 Framer and Line Interface
2-44
Conexant
N8370DSE
Step 4
Configure RSCALE, VSCALE, VSEL, and XSEL from Table 2-9 which contains
configuration examples. Again, in some cases, two or more configurations are
possible for each frequency option. Many other RSCALE and VSCALE values
are also applicable. RSCALE is a programmable frequency divider which scales
the CLADI clock frequency before it is applied to the CLAD phase detector,
CPHASE. Similarly, VSCALE scales the CLAD internal feedback clock,
CLADV. These two clocks must have the same frequency at the phase detector’s
input for the CLAD loop to properly lock. The rule is
(CLADI Reference freq)
÷ (RSCALE factor) = (CLADV freq) ÷ (VSCALE factor).
Table 2-9. Common CLADI Reference Frequencies and CLAD Configuration Examples (1 of 2)
CLADI
Reference
(kHz)
RSCALE
Phase
Compare
Frequency
(kHz)
VSCALE
CLADV
(kHz)
T1/E1
VSEL
XSEL
8
0
8
7
1024
X
0
X
16
0
16
6
1024
X
0
X
32
0
32
5
1024
X
0
X
64
0
64
4
1024
X
0
X
128
0
128
3
1024
X
0
X
256
0
256
2
1024
X
0
X
512
0
512
1
1024
X
0
X
1024
0
1024
0
1024
X
0
X
2048
0
2048
0
2048
X
1
X
7
16
7
2048
X
1
X
0
2048
0
2048
0
7
0
4096
0
4096
0
4096
X
2
X
7
32
7
4096
X
2
X
1
2048
1
4096
0
7
1
8192
0
8192
0
8192
X
3
X
7
64
7
8192
X
3
X
2
2048
2
8192
0
7
2
16384
0
16384
0
16384
X
8
X
7
128
8
1024
X
0
X
0
16384
0
16384
0
7
3
1536
2
384
2
1536
X
6
X
1544
2
386
2
1544
X
5
X
2
386
2
1544
1
7
0



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