参数资料
型号: 440GRX
厂商: Applied Micro Circuits Corp.
英文描述: PowerPC 440GRx Embedded Processor
中文描述: 嵌入式处理器的PowerPC 440GRx
文件页数: 71/88页
文件大小: 603K
代理商: 440GRX
440GRx – PPC440GRx Embedded Processor
Revision 1.08 – October 15, 2007
AMCC Proprietary
73
Preliminary Data Sheet
I/O Specifications
Table 20. Peripheral Interface Clock Timings
Parameter
Min
Max
Units
Notes
PCIClk frequency (asynchronous mode)
66.66
MHz
PCIClk period (asynchronous mode)
15
ns
PCIClk high time
40% of nominal period
60% of nominal period
ns
PCIClk low time
40% of nominal period
60% of nominal period
ns
GMCMDClk frequency
2.5
MHz
GMCMDClk period
400
ns
GMCMDClk high time
160
ns
GMCMDClk low time
160
ns
GMCTxClk frequency MII
2.5
25
MHz
GMCTxClk period MII
40
400
ns
GMCTxClk high time
35% of nominal period
ns
GMCTxClk low time
35% of nominal period
ns
GMCRxClk frequency MII
2.5
25
MHz
GMCRxClk period MII
40
400
ns
GMCRxClk high time
35% of nominal period
ns
GMCRxClk low time
35% of nominal period
ns
GMCRefClk frequency
125
MHz
GMCRefClk period
8
MHz
GMCRefClk high time
40% of nominal period
60% of nominal period
ns
2
GMCRefClk low time
40% of nominal period
60% of nominal period
ns
2
PerClk (and OPB Clock) frequency (for ext. master or sync.
slaves)
33.33MHz
83.33
MHz
GMCRefClk Edge stability (cycle-to-cycle jitter)
+0.15
ns
GMCRefClk Slew Rate
2
V/ns
PerClk period
12
30
ns
PerClk high time
50% of nominal period
66% of nominal period
ns
PerClk low time
33% of nominal period
50% of nominal period
ns
UARTSerClk frequency
1000 / (2TOPB
1+2ns)
MHz
1
UARTSerClk period
2TOPB
1+2
–ns
1
UARTSerClk high time
TOPB
1+1
–ns
1
UARTSerClk low time
TOPB
1+1
–ns
1
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