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PM73487 参数 Datasheet PDF下载

PM73487图片预览
型号: PM73487
PDF下载: 下载PDF文件 查看货源
内容描述: 622 Mbps的ATM流量管理设备 [622 Mbps ATM Traffic Management Device]
分类和应用: 异步传输模式ATM
文件页数/大小: 251 页 / 2936 K
品牌: PMC [ PMC-SIERRA, INC ]
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Released  
Datasheet  
PM73487 QRT  
PMC-Sierra, Inc.  
PMC-980618  
Issue 3  
622 Mbps ATM Traffic Management Device  
9.4.2 Receive Channel Statistics Block  
Base address: 610000h (0184000h byte)  
Index: 4h  
The long address = 610000h + RX_CHAN_NUM × 4h+ long_offset  
The receive channel statistics counters are only valid if the RX_STATS bit in the  
RX_QUEUE_ENGINE_TEST register (“RX_QUEUE_ENGINE_TEST” on  
page 123) is set to 1  
Table 44. Receive Channel Queue Block Summary  
Address  
Name  
RX_CH_SENT  
Read or Write  
Description  
0h  
R/W  
Cells sent from this chan-  
nel.  
2h  
RX_CH_DROPPED  
R/W  
Cells dropped from this  
channel.  
9.4.2.1 RX_CH_SENT (Internal Structure)  
Offset: 0h (0h byte)  
Type: Read/Write  
Format: Refer to the following table.  
Field (Bits)  
Description  
Total cells sent from this channel. Initialize to 0  
RX_CH_SENT  
(31:0)  
9.4.2.2 RX_CH_DROPPED (Internal Structure)  
Offset: 2h (8h byte)  
Type: Read/Write  
Format: Refer to the following table.  
Field (Bits)  
Description  
Total cells dropped from this channel. initialize to 0  
RX_CH_DROPPED  
(31:0)  
9.5 SDRAM/SGRAM Interface Description  
The SDRAMs/SGRAMs are used in the QRT system to store the cells in the receive and transmit  
directions. Before the SDRAMs/SGRAMs can be used, they must be prepared for operation. This  
section discusses setting up the SDRAM/SGRAM for normal operations, as well as test mode  
access by the microprocessor to check the data integrity of the SDRAM/SGRAM.  
197  
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