參數(shù)資料
型號(hào): XRT83L30IV-F
廠商: Exar Corporation
文件頁(yè)數(shù): 20/78頁(yè)
文件大?。?/td> 0K
描述: IC LIU LH/SH T1/E1 SGL 64TQFP
標(biāo)準(zhǔn)包裝: 160
類型: 線路接口裝置(LIU)
驅(qū)動(dòng)器/接收器數(shù): 1/1
規(guī)程: T1,E1
電源電壓: 3.135 V ~ 3.465 V
安裝類型: 表面貼裝
封裝/外殼: 64-LQFP
供應(yīng)商設(shè)備封裝: 64-TQFP(10x10)
包裝: 托盤
其它名稱: 1016-1633
XRT83L30IV-F-ND
XRT83L30
24
REV. 1.0.1
SINGLE-CHANNEL T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
TRANSMIT HDB3/B8ZS ENCODER
The Encoder function is available in both Hardware and Host modes basis by controlling the TNEG/CODE 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/TDATA, 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 interface bit or connecting the TNEG/CODE pin to a “High” level selects the AMI
coding for both E1 or T1 systems.
DRIVER FAILURE MONITOR (DMO)
FIGURE 12. 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 1
PRECEDING 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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