CN8380 Datasheet, PDF (58/91 Pages) Conexant Systems, Inc – integrated quad line interface unit unit for both 1.544 Mbps (T1) and 2.048 Mbps (E1) applications

3.0 Registers
3.2 Global Control and Status Registers
CN8380
Quad T1/E1 Line Interface
OSEL[3:0]
CLADO Frequency Select—Picks one of 14 CLAD divider chain frequencies to output on the
CLADO pin.
OSEL
CLADO Frequency (kHz)
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
8
1024
2048
4096
8192
16,384
32,768
1544
3088
6176
12,352
24,704
2560
1536
<Invalid>
<Invalid>
1 x E1
2 x E1
4 x E1
8 x E1
16 x E1
1 x T1
2 x T1
4 x T1
8 x T1
16 x T1
1 x T1(unframed)
04—CLAD Phase Detector Scale Factor (CPHASE)
R/W
7
6
5
4
3
2
1
0
—
—
—
—
—
VSCALE[2]
VSCALE[1]
VSCALE[0]
VSCALE[2:0]
CLAD Variable Scale Factor—Divides CLADV signal by 2 ^[VSCALE] before use in the phase
detector. Applicable only if FREE [CLAD_CR; addr 02] is 0. Allows the system to select
CLADV frequency that is up to 128 times CLADR.
VSCALE
000
001
010
011
100
101
110
111
Scale Factor
1
2
4
8
16
32
64
128
Phase Detector Variable Input
CLADV selected by VSEL [addr 03]
CLADV/2
CLADV/4
CLADV/8
CLADV/16
CLADV/32
CLADV/64
CLADV/128
3-6
Conexant
N8380DSA
Advance Information
4/21/99