參數(shù)資料
型號: XRT91L82IB
廠商: EXAR CORP
元件分類: 數(shù)字傳輸電路
英文描述: 2.488/2.666 GBPS STS-48/STM-16 SONET/SDH TRANSCEIVER
中文描述: TRANSCEIVER, PBGA196
封裝: 15 X 15 MM, STBGA-196
文件頁數(shù): 49/59頁
文件大?。?/td> 414K
代理商: XRT91L82IB
xr
REV. P1.0.5
PRELIMINARY
2.488/2.666 GBPS STS-48/STM-16 SONET/SDH TRANSCEIVER
XRT91L82
46
T
ABLE
21: M
ICROPROCESSOR
R
EGISTER
0
X
07
H
B
IT
D
ESCRIPTION
C
ONFIGURATION
C
ONTROL
R
EGISTER
(0
X
07
H
)
B
IT
N
AME
F
UNCTION
Register
Type
Default
Value
(HW reset)
D7
REFREQSEL1
Input Reference Frequency Select
This bit is used to select the clock input reference.
Note: Non-FEC transmission and/or reception modes require
155.52 MHz clock reference. FEC transmission and/or reception
mode requires 166.63 MHz clock reference.
R/W
0
D6
REFREQSEL0
Input Reference Frequency Select
This bit is used to select the clock input reference.
Note: Non-FEC transmission and/or reception modes require
155.52 MHz clock reference. FEC transmission and/or reception
mode requires 166.63 MHz clock reference.
R/W
0
REFREQSEL
[1:0]
CMU
REFERENCE
FREQUENCY
CDR
REFERENCE
FREQUENCY
00
155.52 MHz present on
REF1CLK
REF2CLK not used
155.52 MHz present on
REF1CLK
REF2CLK not used
01
155.52 MHz present on
REF1CLK
166.63 MHz present on
REF2CLK
10
166.63 MHz present on
REF2CLK
155.52 MHz present on
REF1CLK
11
166.63 MHz present on
REF2CLK
REF1CLK not used
166.63 MHz present on
REF2CLK
REF1CLK not used
REFREQSEL
[1:0]
CMU
REFERENCE
FREQUENCY
CDR
REFERENCE
FREQUENCY
00
155.52 MHz present on
REF1CLK
REF2CLK not used
155.52 MHz present on
REF1CLK
REF2CLK not used
01
155.52 MHz present on
REF1CLK
166.63 MHz present on
REF2CLK
10
166.63 MHz present on
REF2CLK
155.52 MHz present on
REF1CLK
11
166.63 MHz present on
REF2CLK
REF1CLK not used
166.63 MHz present on
REF2CLK
REF1CLK not used
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