參數(shù)資料
型號: XRT72L73
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): 87/105頁
文件大小: 1307K
代理商: XRT72L73
á
XRT72L73
THREE CHANNEL, DS3 ATM UNI/CLEAR-CHANNEL FRAMER IC
PRELIMINARY
REV. P1.0.1
87
T
ABLE
87:
R
X
CP I
DLE
C
ELL
M
ASK
H
EADER
B
YTE
-3
R
EGISTER
86 R
X
CP I
DLE
C
ELL
M
ASK
H
EADER
B
YTE
-3 H
EX
A
DDRESS
: 0
X
56
B
IT
F
UNCTION
T
YPE
D
EFAULT
D
ESCRIPTION
-O
PERATION
7-0
Rx Idle Cell Mask 3
R/W
0xFF
This register, along with the “Rx Idle Cell Pattern - 3” Register permits the
user to define “Idle Cell Filtering” criteria for Header byte 3.
Any “1” in this register, configures the Receive Cell Processor to make the
comparison between the corresponding bit-field within Header byte 3 and
the contents of the “Rx Idle Cell Pattern - 3” register.
Any “0” in this register, configures the Receive Cell Processor to NOT per-
form this comparison:
This register should be set to “0xFF” when the Receive Cell Processor is
receiving the “ATM Forum” Standard Idle cells.
N
OTE
:
This register is only active if the XRT72L73 has been configured to
operate in the “ATM UNI” Mode.
T
ABLE
88:
R
X
CP I
DLE
C
ELL
M
ASK
H
EADER
B
YTE
-4
R
EGISTER
87 R
X
CP I
DLE
C
ELL
M
ASK
H
EADER
B
YTE
-4 H
EX
A
DDRESS
: 0
X
57
B
IT
F
UNCTION
T
YPE
D
EFAULT
D
ESCRIPTION
-O
PERATION
7-0
Rx Idle Cell Mask 4
R/W
0xFF
This register, along with the “Rx Idle Cell Pattern - 4” Register permits the
user to define “Idle Cell Filtering” criteria for Header byte 4.
Any “1” in this register, configures the Receive Cell Processor to make the
comparison between the corresponding bit-field within Header byte 4 and
the contents of the “Rx Idle Cell Pattern - 4” register.
Any “0” in this register, configures the Receive Cell Processor to NOT per-
form this comparison:
This register should be set to “0xFF” when the Receive Cell Processor is
receiving the “ATM Forum” Standard Idle cells.
N
OTE
:
This register is only active if the XRT72L73 has been configured to
operate in the “ATM UNI” Mode.
T
ABLE
89:
R
X
CP U
SER
C
ELL
F
ILTER
P
ATTERN
H
EADER
B
YTE
-1
R
EGISTER
88 R
X
CP U
SER
C
ELL
F
ILTER
P
ATTERN
H
EADER
B
YTE
-1 H
EX
A
DDRESS
: 0
X
58
B
IT
F
UNCTION
T
YPE
D
EFAULT
D
ESCRIPTION
-O
PERATION
7-0
RxUser Cell Filter Pattern 1
R/W
0x00
This register (along with the “Rx User Cell Mask 1” register) permits the user
to specify the “User Cell Filtering” criteria for Header Byte 1.
N
OTE
:
This bit-field is only active if the XRT72L73 is operating in the “ATM
UNI” Mode.
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