參數(shù)資料
型號(hào)： XRT72L74
廠商： Exar Corporation
元件分類： 通信及網(wǎng)絡(luò)
英文描述： Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
中文描述： Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
文件頁數(shù)： 93/104頁
文件大?。?/td> 1301K
代理商： XRT72L74
á
XRT72L74
FOUR CHANNEL, DS3 ATM UNI/CLEAR-CHANNEL FRAMER
PRELIMINARY
REV. P1.0.0
93
T
ABLE
108:
R
X
UTOPIA I
NTERRUPT
E
NABLE
/S
TATUS
R
EGISTER
R
EGISTER
107 R
X
UTOPIA I
NTERRUPT
E
NABLE
/S
TATUS
R
EGISTER
H
EX
A
DDRESS
: 0
X
6B
B
IT
F
UNCTION
T
YPE
D
EFAULT
D
ESCRIPTION
-O
PERATION
7
Unused
RO
0
6
R FIFO Reset
R/W
0
0: Normal operation
A “0” to “1” transition resets the Read-Write pointers and FIFO memory
N
OTE
:
This bit-field is only active if the XRT72L74 is configured to operate
in the “ATM UNI” Mode.
5
Rx FIFO Overrun Interrupt
Enable
R/W
0
0: Disables the “Rx FIFO Over-run” interrupt.
1: Enables the “Rx FIFO Over-run” interrupt.
N
OTE
:
This bit-field is only active if the XRT72L74 is configured to operate
in the “ATM UNI” Mode.
4
Rx FIFO Underrun Inter-
rupt Enable
RO
0
0: Disables the “Rx FIFO Under-run” interrupt.
1: Enables the “Rx FIFO Under-run” interrupt.
N
OTE
:
This bit-field is only active if the XRT72L74 is configured to operate
in the “ATM UNI” Mode.
3
RCOCA Interrupt Enable
R/W
0
0: Disables the “Detection of RxRUNT Cell” Interrupt.
1: Enables the “Detection of RxRUNT Cell” Interrupt.
N
OTE
:
This bit-field is only active if the XRT72L74 is configured to operate
in the “ATM UNI” Mode.
2
R FIFO Ovr Interrupt Sta-
tus
RUR
0
0: Indicates that the “RxFIFO Overrun” Interrupt has NOT occurred since the
last read of this register.
1: Indicates that the “RxFIFO Overrun” Interrupt has occurred since the last
read of this register.
N
OTE
:
This bit-field is only active if the XRT72L74 is configured to operate
in the “ATM UNI” Mode.
1
R FIFO Under Interrupt
Status
RO
0
0: Indicates that the “RxFIFO Underrun” Interrupt has NOT occurred since
the last read of this register.
1: Indicates that the “RxFIFO Underrun” Interrupt has occurred since the last
read of this register.
N
OTE
:
This bit-field is only active if the XRT72L74 is configured to operate
in the “ATM UNI” Mode.
0
RCOCA Interrupt Stats
RUR
0
0: Indicates that the “Detection of RUNT Cell” Interrupt has NOT occurred
since the last read of this register.
1: Indicates that the “Detection of RUNT Cell” Interrupt has occurred since
the last read of this register.
N
OTE
:
This bit-field is only active if the XRT72L74 is configured to operate
in the “ATM UNI” Mode.
T
ABLE
109:
R
X
UTOPIA A
DDRESS
R
EGISTER
108 R
X
UTOPIA A
DDRESS
H
EX
A
DDRESS
: 0
X
6C
B
IT
F
UNCTION
T
YPE
D
EFAULT
D
ESCRIPTION
-O
PERATION
7-5
Unused
RO
000
4-0
Rx UTOPIA Address
R/W
00000
Programmable Rx UTOPIA address register to select device
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