參數(shù)資料
型號： 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)： 66/104頁
文件大?。?/td> 1301K
代理商： XRT72L74
XRT72L74
FOUR CHANNEL, DS3 ATM UNI/CLEAR-CHANNEL FRAMER
REV. P1.0.0
á
PRELIMINARY
66
T
ABLE
30:
T
X
DS3 FEAC R
EGISTER
R
EGISTER
29 T
X
DS3 FEAC R
EGISTER
H
EX
A
DDRESS
0
X
1D
B
IT
F
UNCTION
T
YPE
D
EFAULT
D
ESCRIPTION
-O
PERATION
7
Unused
RO
0
6
Tx FEAC (5)
R/W
1
Contains the value of the FEAC Code (or Message) that is to be transmitted
to the remote terminal equipment. The LSB of this bit-field will be transmit-
ted first.
N
OTE
:
This register is only active if the XRT72L74 has been configured to
operate in the “C-bit Parity” Framing Format
5
Tx FEAC (4)
R/W
1
4
Tx FEAC (3)
R/W
1
3
Tx FEAC (2)
R/W
1
2
Tx FEAC (1)
R/W
1
1
Tx FEAC (0)
R/W
1
0
Unused
RO
0
T
ABLE
31:
T
X
DS3 LAPD C
ONFIGURATION
R
EGISTER
R
EGISTER
30 T
X
DS3 LAPD C
ONFIGURATION
R
EGISTER
H
EX
A
DDRESS
: 0
X
1E
B
IT
F
UNCTION
T
YPE
D
EFAULT
D
ESCRIPTION
-O
PERATION
7-5
Unused
RO
0
4
Reserved
R/W
0
Set bit to 0
3
Auto Retransmit
R/W
1
0: LAPD Transmitter will NOT automatically transmit a given PMDL (or LAPD
Message) repeatedly at one second intervals.
1: LAPD Transmitter will transmit a given PMDL (or LAPD Message) repeat-
edly at one second intervals.
N
OTE
:
This bit-field is only active if the XRT72L74 has been configured to
support the “C-bit Parity” Framing format.
2
Tx LAPD Type(1)
R/W
0
00: LAPD message RAM Depth is 76 bytes (38 words)
01: LAPD message RAM Depth is 76 bytes (38 words)
10: LAPD message RAM Depth is 76 bytes (38 words)
11: LAPD message RAM Dept his 82 bytes (41 words)
N
OTE
:
These bit-fields are only active if the XRT72L74 has been configured
to support the “C-bit Parity” Framing Format.
1
Tx LAPD Type(0)
R/W
0
0
Tx LAPD Enable
R/W
0
0: LAPD Transmitter is Disabled. The Transmit DS3 Framer block will set
each “outbound” DL bit-field to “1”.
1: LAPD Transmitter is Enabled. The LAPD Transmitter will begin to transmit
the Flag Sequence octet (0x7E), until a “Transmit LAPD Message” command
has been invoked.
N
OTE
:
This bit-field is only active if the XRT72L74 has been configured to
support the “C-bit Parity” Framing format.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XRT72L74IB 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC
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XRT7300IV 功能描述:外圍驅(qū)動器與原件 - PCI . . RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray
XRT7300IV-F 功能描述:外圍驅(qū)動器與原件 - PCI RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray
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