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PM7340 参数 Datasheet PDF下载

PM7340图片预览
型号: PM7340
PDF下载: 下载PDF文件 查看货源
内容描述: S / UNI ATM反向多路复用, 8个环节 [S/UNI INVERSE MULTIPLEXING FOR ATM, 8 LINKS]
分类和应用: ATM集成电路SONET集成电路SDH集成电路电信集成电路电信电路异步传输模式
文件页数/大小: 334 页 / 2670 K
品牌: PMC [ PMC-SIERRA, INC ]
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PM7340 S/UNI-IMA-8  
PRELIMINARY  
INVERSE MULTIPLEXING OVER ATM  
DATA SHEET  
PMC-2001723  
ISSUE 3  
INVERSE MULTIPLEXING OVER ATM  
Figure 35  
- UTOPIA L2 Multi-PHY Receive Slave  
1
2
3
4
5
6
7
8
9
10  
Polling  
Selection  
RCLK  
RADR[4:0]  
1F  
PHY-X  
1F  
PHY-Y  
1F  
PHY-X  
1F  
PHY-Z  
1F  
PHY-Z  
1F  
1 RCLK  
PHY-X  
1 RCLK  
PHY-Y  
1 RCLK  
PHY-X  
1 RCLK  
PHY-Z  
RCA  
RDAT[m:0], RPRTY  
RENB  
PHY-Z  
Data K-3  
Data K-2  
Data K-1  
Data K  
Data 0  
Data 1  
Data 2  
Data K-  
RSOC  
13.3.4 UTOPIA L2 single-PHY Receive Slave Interface  
Figure 36 gives an example of the functional timing of the receive interface when  
configured as a single port UTOPIA L2 compliant slave. The interface responds  
to the address that matches the DEVID specified in the RXAPS Configuration  
register by asserting the RCA when it is capable of providing a complete cell. As  
a result, the master selects the S/UNI-IMA-8 PHYs by presenting the PHY  
address again during the last cycle RENB is high. Had not the device been  
selected, RSOC, RDAT[m:0], and RPRTY would have remained high-impedance.  
Figure 36 illustrates that a cell transfer may be paused by deasserting RENB.  
The device is reselected by presenting the PHY’s address the last cycle RENB is  
high to resume the transfer.  
Figure 36  
- UTOPIA L2 Single-PHY Receive Slave  
16-bit Utopia L2 Single Address Slave  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
Polling & Reselection  
Selection  
Back 2 Back Cell  
RCLK  
RADR[4:0]  
1F  
DEVID  
1F  
N+1  
1F  
DEVID  
1F  
N+2  
1F  
N+3  
D(2)  
1F  
N+1  
1F  
N
1F  
N+1  
D(3)  
1 RCLK  
1 RCLK  
N+1  
D(n)  
RCA  
RDAT[m:0], RPRTY  
RENB  
DEVID  
DEVID  
D(n-3)  
D(n-2)  
PAUS  
D(n-1)  
D(0)  
D(1)  
D(n-1)  
D(n)  
D(0)  
D(1)  
D(2)  
RSOC  
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE  
293