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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  
7. 2. 19. QUEUE ENGINE CONDITION_PRES_BITS  
Address: 2Ah (A8h byte)  
Read-Only. All bits unless specified Resets to 0.  
Format:  
Field (Bits)  
Description  
AB_RAM_PARITY_FAIL  
(31)  
1
0
The parity on the last AB RAM read was not odd.  
The parity on the last AB RAM read was odd.  
SF_FABRIC_NOT_SYNC_FAIL  
(30)  
1
The RX_CELL_START pulse did not arrive at exactly 118 SF_CLK  
clock interval. The fabric interface is out of sync because of this condi-  
tion.  
0
The RX_CELL_START pulse is occuring at exactly 118 SF_CLK  
clocks interval. The fabric interface is in sync.  
Not used  
(29:27)  
Driven with a 0.  
CH_UNUSED_VCI_SET  
(26)  
1
A cell was received with a VPI with a VPI with VCC_ENTRY=1 and a  
VCI bit set great than that defined by the value of VCI_BITS for that  
VPI.  
0
1
The cell that was just received did not have an unused VCI bit set.  
QE_TX_SCG_FAIL  
(25)  
An illegal state is present in one of the three Tx Service Class Group  
counters. This check asserts that whenever there are no cells in the lower  
12 services classes, there must also be no cells in the lower 4 service  
classes. This is a non-recoverable state for the device. The device should  
be reset and reinitialized.  
0
1
The Tx Service Class Group counters are currently in a legal state.  
QE_RX_SCG_FAIL  
(24)  
An illegal state is present in one of the three Rx Service Class Group  
counters. This check asserts that whenever there are no cells in the lower  
48 services classes, there must also be no cells in the lower 16 service  
classes. This is a non-recoverable state for the device. The device should  
be reset and reinitialized.  
0
1
The Rx Service Class Group counters are currently in a legal state.  
QE_TX_LOWER12_SCG_QD_NE  
The Tx Lower12 Service Class Group Queue Depth is negative. This is a  
non-recoverable state for the device. The device should be reset and  
reinitialized.  
G
(23)  
0
1
The Tx Lower12 Service Class Group Queue Depth is non-negative.  
QE_TX_LOWER8_SCG_QD_NEG  
(22)  
The Tx Lower8 Service Class Group Queue Depth is negative. This is a  
non-recoverable state for the device. The device should be reset and  
reinitialized.  
0
1
The Tx Lower8 Service Class Group Queue Depth is non-negative.  
QE_TX_LOWER4_SCG_QD_NEG  
(21)  
The Tx Lower4 Service Class Group Queue Depth is negative. This is a  
non-recoverable state for the device. The device should be reset and  
reinitialized.  
0
1
The Tx Lower4 Service Class Group Queue Depth is non-negative.  
QE_TX_DIR_QD_NEG  
(20)  
The Tx Direction Queue Depth is negative. This is a non-recoverable  
state for the device. The device should be reset and reinitialized.  
The Tx Direction Queue Depth is non-negative.  
0
132