82P2281PFG IDT, Integrated Device Technology Inc, 82P2281PFG Datasheet - Page 237
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82P2281PFG
Manufacturer Part Number
82P2281PFG
Description
Manufacturer
IDT, Integrated Device Technology Inc
Datasheet
1.82P2281PFG.pdf
(371 pages)
Specifications of 82P2281PFG
Number Of Transceivers
1
Screening Level
Industrial
Mounting
Surface Mount
Package Type
TQFP
Operating Temperature (min)
-40C
Operating Temperature (max)
85C
Lead Free Status / RoHS Status
Compliant
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
82P2281PFG
Manufacturer:
IDT
Quantity:
112
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E1 Transmit Jitter Attenuation Configuration (021H)
TJITT_TEST:
interval between the read and write pointer of the FIFO will be written into the TJITT[6:0] bits (b6~0, E1-038H).
rent interval is compared with the old one in the TJITT[6:0] bits (b6~0, E1-038H) and the larger one will be indicated by the TJITT[6:0] bits (b6~0, E1-
038H); otherwise, the value in the TJITT[6:0] bits (b6~0, E1-038H) is not changed.
TJA_LIMT:
of the JA can be widened to track the short term input jitter, thereby avoiding data corruption. This bit selects whether the bandwidth is normal or wid-
ened.
bits window.
TJA_E:
TJA_DP[1:0]:
TJA_BW:
Programming Information
IDT82P2281
Bit Name
Default
Bit No.
= 0: The real time interval between the read and write pointer of the FIFO is indicated in the TJITT[6:0] bits (b6~0, E1-038H). That is, the current
= 1: The peak-peak interval between the read and write pointer of the FIFO is indicated in the TJITT[6:0] bits (b6~0, E1-038H). That is, the cur-
When the read and write pointer of the FIFO are within 2/3/4 bits (corresponding to the FIFO depth) of overflowing or underflowing, the bandwidth
= 0: Normal bandwidth is selected.
= 1: Widen bandwidth is selected. In this case, the JA will not attenuate the input jitter until the read/write pointer’s position is outside the 2/3/4
= 0: Disable the Transmit Jitter Attenuator.
= 1: Enable the Transmit Jitter Attenuator.
These two bits select the Jitter Attenuation Depth.
= 00: The Jitter Attenuation Depth is 128-bit.
= 01: The Jitter Attenuation Depth is 64-bit.
= 10 / 11: The Jitter Attenuation Depth is 32-bit.
This bit select the Jitter Transfer Function Bandwidth.
= 0: 6.77 Hz.
= 1: 0.87 Hz.
Type
7
Reserved
6
TJITT_TEST
R/W
5
0
TJA_LIMT
237
R/W
4
0
SINGLE T1/E1/J1 LONG HAUL / SHORT HAUL TRANSCEIVER
TJA_E
R/W
3
0
TJA_DP1
R/W
2
0
TJA_DP0
R/W
1
0
August 20, 2009
TJA_BW
R/W
0
0
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