bt8375kpf Conexant Systems, Inc., bt8375kpf Datasheet - Page 72

• Manufacturer Part Number: bt8375kpf
• Description: Single Chip Transceivers For T1/e1 And Integrated Service Digital Network Isdn Primary Rate Interfaces Systems
• Manufacturer: Conexant Systems, Inc.

2.0 Circuit Description
2.6 Clock Rate Adapter
(CLADI Reference freq) (RSCALE factor) = (CLADV freq) (VSCALE factor).
Table 2-9. Common CLADI Reference Frequencies and CLAD Configuration Examples (1 of 2)
2-44
Reference
CLADI
16384
(kHz)
1024
2048
4096
8192
1536
1544
128
256
512
16
32
64
8
RSCALE
Step 4
0
0
0
0
0
0
0
0
0
7
0
0
7
1
0
7
2
0
7
0
2
2
2
Configure RSCALE, VSCALE, VSEL, and XSEL from
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
Frequency
Compare
Phase
16384
16384
(kHz)
1024
2048
2048
4096
2048
8192
2048
128
256
512
128
384
386
386
16
32
64
16
32
64
8
VSCALE
Conexant
7
6
5
4
3
2
1
0
0
7
0
0
7
1
0
7
2
0
8
0
2
2
2
Fully Integrated T1/E1 Framer and Line Interface
CLADV
16384
16384
(kHz)
1024
1024
1024
1024
1024
1024
1024
1024
2048
2048
2048
4096
4096
4096
8192
8192
8192
1024
1536
1544
1544
T1/E1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
0
0
0
1
Table 2-9
Bt8370/8375/8376
VSEL
0
0
0
0
0
0
0
0
1
1
7
2
2
7
3
3
7
8
0
7
6
5
7
which contains
N8370DSE
XSEL
X
X
X
X
X
X
X
X
X
X
0
X
X
1
X
X
2
X
X
3
X
X
0