參數(shù)資料
型號(hào): XRT83D10
廠商: Exar Corporation
英文描述: SINGLE CHANNEL DS1/CEPT LINE INTERFACE UNIT
中文描述: 單通道DS1/CEPT線路接口單元
文件頁(yè)數(shù): 12/18頁(yè)
文件大?。?/td> 258K
代理商: XRT83D10
XRT83D10
SINGLE CHANNEL DS1/CEPT LINE INTERFACE UNIT
REV. 1.0.3
xr
12
1.3
To reduce frequency jitter in the transmit clock or receive clock, a crystal-less jitter attenuator is provided. The
jitter attenuator can be selected either in the transmit or receive path or it can be disabled as shown in Table 8.
JITTER ATTENUATOR
1.3.1
A FIFO overflow Signal (FOFS = 1) is indicated if the phase jitter exceeds the tolerance of the jitter attenuator.
When FOFS is "High", jitter attenuator bandwidth is increased to track the short term jitter and no data error will
FIFO Overflow Signal (FOFS):
F
IGURE
7. ITU G.703 P
ULSE
T
EMPLATE
T
ABLE
8: J
ITTER
A
TTENUATOR
S
ELECTION
J
ITTER
A
TTENUATOR
CONNECTIVITY
M
ODE
1
M
ODE
2
Bypass (Disabled)
0
0
Transmit Path
0
1
Receive Path
1
0
Test Mode
1
1
1
1
1
1
1
1
269 ns
(244 + 25)
194 ns
(244 – 50)
244 ns
219 ns
(244 – 25)
488 ns
(244 + 244)
0%
50%
2
V = 100%
Nominal pulse
Note
– V corresponds to the nominal peak value.
2
2
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