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CX28333-1X 参数 Datasheet PDF下载

CX28333-1X图片预览
型号: CX28333-1X
PDF下载: 下载PDF文件 查看货源
内容描述: 单/双/三E3 / DS3 / STS - 1线路接口单元 [Single/Dual/Triple E3/DS3/STS-1 Line Interface Unit]
分类和应用: 电信集成电路PC
文件页数/大小: 68 页 / 549 K
品牌: CONEXANT [ CONEXANT SYSTEMS, INC ]
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CX28331/CX28332/CX28333  
1.0 Pin Description  
Single/Dual/Triple E3/DS3/STS-1 Line Interface Unit  
1.1 Pin Assignments  
Table 1-1. CX2833i-1x Pin Definitions (3 of 6)  
Pin #  
Signal Name  
Description  
I/O/P  
Notes  
CX28331-1x CX28332-1x CX28333-1x  
50  
52  
62  
39  
66  
35  
62  
50  
39  
66  
52  
35  
TCLK  
TCLK1  
TCLK2  
TCLK3  
RLOS  
Transmit clock Ch1  
I
Transmit bit clock input for strobing  
with transmit data into the CX2833i.  
Transmit clock Ch2  
Transmit clock Ch3  
Loss of signal Ch1  
I
I
O
Loss Of Signal (LOS) indication for  
each channel, as determined by  
insufficient pulse density. Signal  
loss detected when RLOS = 1. An  
LOS will be asserted when 175 ±75  
0s occur in a row and deasserted  
when the pulse density is between  
28% and 33% (DS3/STS-1) (i.e., a  
1s density).  
RLOS1  
RLOS2  
RLOS3  
Loss of signal Ch2  
Loss of signal Ch3  
O
O
Control Signals  
59  
59  
59  
ENDECDIS Encoder/decoder  
disable (for all channels)  
I
1 = Dual rail pulse coded data  
format. Input transmit data pins  
TPOS, TNRZ, TNEG and NC are  
interpreted as TPOS and TNEG  
(encoded positive and negative rail  
data). Output receive data pins  
RPOS and RNRZ, and RNEG and  
RLCV are interpreted as RPOS and  
RNEG, with RPOS having a positive  
pulse in place of every positive AMI  
pulse and RNEG having a negative  
pulse in place of every negative AMI  
pulse.  
0 = NRZ format. Transmit data pins  
TPOS and TNEG are interpreted as  
TNRZ and NC (not connected).  
Receive data pins RPOS and RNEG  
are interpreted as RNRZ and RLCV.  
In this mode, all line code violations  
are reported as active high on  
RLCV.  
51  
61  
40  
61  
51  
TAIS  
TAIS1  
TAIS2  
Transmit Ch1 AIS mode  
enable  
I
Transmission of Alarm Indication  
Signal (AIS) for a given channel.  
Replace transmit data with AIS  
signal. The AMI form of AIS  
supported is alternating 1s.  
(+1, -1, +1, -1, +1, ...)  
Transmit Ch2 AIS mode  
enable  
I
I
40  
TAIS3  
Transmit Ch3 AIS mode  
enable  
Looping takes precedence over AIS.  
1 = AIS mode enabled  
0 = AIS mode disabled  
100985A  
Conexant  
1-7  
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