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參數(shù)資料
| 型號(hào)： | XRT75R12IB |
| 廠商： | EXAR CORP |
| 元件分類： | 數(shù)字傳輸電路 |
| 英文描述： | TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR |
| 中文描述： | DATACOM, PCM TRANSCEIVER, PBGA420 |
| 封裝： | 35 X 35 MM, TBGA-420 |
| 文件頁(yè)數(shù)： | 86/89頁(yè) |
| 文件大?。?/td> | 457K |
| 代理商： | XRT75R12IB |
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XRT75R12
REV. P1.0.2
PRELIMINARY
TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
83
T
ABLE
45: E
RROR
C
OUNTER
H
OLDING
R
EGISTER
- C
HANNEL
N
A
DDRESS
L
OCATION
= 0
XM
C
Each channel contains a dedicated 16 bit PRBS error counter. When enabled this counter will accumulate
PRBS errors (as well as excess zeros and LCVs). The LS byte will "carry" a one over to the MS byte each time
it rolls over from 255 to zero until the MS byte also reaches 255. When both counters reach 255, no further
errors will be accumulated and "all ones" will signify an overflow condition.
The counter can be read while in the active count mode. Either register may be read "on the fly" and the other
byte will be simultaneously transferred into the channel’s Error Holding register. The holding register may then
be read to supply the Host with a correct 16 bit count (as of the instant of reading). With this mechanism, the
Host could rapidly cycle thru reading all twelve counters in order (storing the read byte in scratch RAM) and
then come back and read the second byte from each holding register to form the 16 bit accumulation in the
Host system.
0x7-
0x8-
APST
IER6
ISR6
AS6
TC6
RC6
CC6
JA6
APSR
EM6
EL6
EH6
0
X
9-
IER7
ISR7
AS7
TC7
RC7
CC7
JA7
EM7
EL7
EH7
0xA-
IER8
ISR8
AS8
TC8
RC8
CC8
JA8
EM8
EL8
EH8
0xB-
IER9
ISR9
AS9
TC9
RC9
CC9
JA9
EM9
EL9
EH9
0xC-
IER10
ISR10
AS10
TC10
RC10
CC10
JA10
EM10
EL10
EH10
0xD-
IER11
ISR11
AS11
TC11
RC11
CC11
JA11
EM11
EL11
EH11
0xE-
CIE
CIS
0xF-
B
IT
7
B
IT
6
B
IT
5
B
IT
4
B
IT
3
B
IT
2
B
IT
1
B
IT
0
Msb
Ls bit
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
A
DDRESS
L
OCATION
0
1
2
3
4
5
6
7
8
9
A
B
C
D E
F
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| XRT75VL00 | E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR |
| XRT75VL00IV | E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR |
| XRT79L71 | 1 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC |
| XRT79L71IB | 1 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC |
| XRT79L72 | 2 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRT75R12IB-F | 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI 12 Channel 3.3V-5V temp -45 to 85C RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| XRT75R12IB-L | 功能描述:LIN 收發(fā)器 Attenuator RoHS:否 制造商:NXP Semiconductors 工作電源電壓: 電源電流: 最大工作溫度: 封裝 / 箱體:SO-8 |
| XRT75VL00 | 制造商:EXAR 制造商全稱:EXAR 功能描述:E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR |
| XRT75VL00_08 | 制造商:EXAR 制造商全稱:EXAR 功能描述:E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR |
| XRT75VL00D | 制造商:EXAR 制造商全稱:EXAR 功能描述:E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER |
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