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參數(shù)資料
| 型號(hào)： | XRT83SL34 |
| 廠商： | Exar Corporation |
| 英文描述： | QUAD T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR |
| 中文描述： | 上海四的T1/E1/J1收發(fā)器時(shí)鐘恢復(fù)和抖動(dòng)衰減器 |
| 文件頁(yè)數(shù)： | 20/80頁(yè) |
| 文件大?。?/td> | 856K |
| 代理商： | XRT83SL34 |
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XRT83SL34
QUAD T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
PRELIMINARY
REV. P1.0.8
24
TRANSMIT HDB3/B8ZS ENCODER
The Encoder function is available in both Hardware and Host modes on a per channel basis by controlling the
TNEG_n/CODES_n pin or CODES interface bit. The encoder is only available in single-rail mode. In E1 mode
and with HDB3 encoding selected, any sequence with four or more consecutive zeros in the input serial data
from TPOS_n/TDATA_n, will be removed and replaced with 000V or B00V, where “B” indicates a pulse
conforming with the bipolar rule and “V” representing a pulse violating the rule. An example of HDB3 Encoding
is shown in Table 3. In a T1 system, an input data sequence with eight or more consecutive zeros will be
removed and replaced using the B8ZS encoding rule. An example of Bipolar with 8 Zero Substitution (B8ZS)
encoding scheme is shown in Table 4. Writing a “1” into the CODES_n interface bit or connecting the TNEG_n/
CODES_n pin to a “High” level selects the AMI coding for both E1 or T1 systems.
FIGURE 10. TRANSMIT CLOCK AND INPUT DATA TIMING
TABLE 3: EXAMPLES OF HDB3 ENCODING
NUMBER OF PULSE BEFORE NEXT 4 ZEROS
NEXT 4 BITS
Input
0000
HDB3 (case1)
odd
000V
HDB3 (case2)
even
B00V
TABLE 4: EXAMPLES OF B8ZS ENCODING
CASE 1PRECEDING PULSE
NEXT 8 BITS
Input
+
00000000
B8ZS
000VB0VB
AMI Output
+
000+ -0- +
CASE 2
Input
-
00000000
B8ZS
000VB0VB
AMI Output
-
000- +0+ -
TCLK
R
TCLK
F
TCLK
TPOS/TDATA
or
TNEG
T
SU
T
HO
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| XRT83SL34ES | 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI 4 CHT1/E1 LIUSH 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 |
| XRT83SL34IV | 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
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| XRT83SL38 | 制造商:EXAR 制造商全稱:EXAR 功能描述:OCTAL T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR |
| XRT83SL38_07 | 制造商:EXAR 制造商全稱:EXAR 功能描述:OCTAL T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER |
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