cx28380 Mindspeed Technologies, cx28380 Datasheet - Page 50
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cx28380
Manufacturer Part Number
cx28380
Description
Cn8380 Quad T1/e1 Line Interface
Manufacturer
Mindspeed Technologies
Datasheet
1.CX28380.pdf
(86 pages)
Available stocks
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Part Number
Manufacturer
Quantity
Price
Part Number:
cx28380-16
Manufacturer:
MINDSPEED
Quantity:
20 000
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29380-DSH-001-B
LFGAIN[3:0]
03—CLAD Frequency Select (CSEL)
VSEL[3:0]
OSEL[3:0]
VSEL[3]
7
Loop Filter Gain—Selects the NCO loop filter's proportional phase error gain. Lower
gain values reduce phase response time, and higher gain values increase phase
response time. LFGAIN is programmed to 0 for normal applications.
CLADV Frequency Select—Applicable only if FREE [CLAD_CR; addr 02] is 0. Picks
one of 13 CLAD divider chain frequencies to feed back to the phase detector. The
selected CLADV frequency passes to VSCALE for further division before phase
detector comparison. Setting VSEL to invalid values is undefined.
CLADO Frequency Select
on the CLADO pin.
VSEL[2]
6
Preliminary Information / Mindspeed Proprietary and Confidential
0x0 = 0000
0x1 = 0001
0x2 = 0010
0x3 = 0011
0x4 = 0100
0x5 = 0101
0x6 = 0110
0x7 = 0111
0x8 = 1000
0x9 = 1001
LFGAIN
<others>
VSEL
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
VSEL[1]
5
Mindspeed Technologies
Proportional Gain
<Invalid>
<Invalid>
CLADV
16,384
32,768
12,352
24,704
1024
2048
4096
8192
1544
3088
6176
2560
1536
8
—
VSEL[0]
128
256
512
512
Picks one of 14 CLAD divider chain frequencies to output
16
32
64
1
2
4
8
4
Frequency (kHz)
1 x T1 (unframed)
OSEL[3]
16 x E1
16 x T1
8 x E1
8 x T1
1 x E1
2 x E1
4 x E1
1 x T1
2 x T1
4 x T1
3
®
OSEL[2]
2
OSEL[1]
1
OSEL[0]
Registers
0
R/W
42
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