參數(shù)資料
型號: 440GR
廠商: Applied Micro Circuits Corp.
英文描述: Power PC 440GR Embedded Processor
中文描述: 440GR的Power PC嵌入式處理器
文件頁數(shù): 62/82頁
文件大?。?/td> 527K
代理商: 440GR
AMCC Proprietary
65
440GR – PPC440GR Embedded Processor
Preliminary Data Sheet
Revision 1.16 – July 19, 2006
I/O Specifications
Table 16. Peripheral Interface Clock Timings
Parameter
Min
Max
Units
Notes
PCIClk input frequency (asynchronous mode)
66.66
MHz
PCIClk period (asynchronous mode)
15
ns
PCIClk input high time
40% of nominal period
60% of nominal period
ns
PCIClk input low time
40% of nominal period
60% of nominal period
ns
EMCMDClk output frequency
2.5
MHz
EMCMDClk period
400
ns
EMCMDClk output high time
160
ns
EMCMDClk output low time
160
ns
EMCTxClk input frequency MII(RMII)
2.5(5)
25(50)
MHz
EMCTxClk period MII(RMII)
40(20)
400(200)
ns
EMCTxClk input high time
35% of nominal period
ns
EMCTxClk input low time
35% of nominal period
ns
EMCRxClk input frequency MII(RMII)
2.5(5)
25(50)
MHz
EMCRxClk period MII(RMII)
40(20)
400(200)
ns
EMCRxClk input high time
35% of nominal period
ns
EMCRxClk input low time
35% of nominal period
ns
PerClk (and OPB Clock) output frequency (for ext. master or
sync. slaves)
–66.66
MHz
PerClk period
15
ns
PerClk output high time
50% of nominal period
66% of nominal period
ns
PerClk output low time
33% of nominal period
50% of nominal period
ns
UARTSerClk input frequency
1000/(2TOPB
1+2ns)
MHz
1
UARTSerClk period
2TOPB+2
–ns
1
UARTSerClk input high time
TOPB+1
–ns
1
UARTSerClk input low time
TOPB+1
–ns
1
TmrClk1 input frequency
100
MHz
2
TmrClk1 period
10
ns
TmrClk1 input high time
40% of nominal period
60% of nominal period
ns
TmrClk1 input low time
40% of nominal period
60% of nominal period
ns
Notes:
1. TOPB is the period in ns of the OPB clock. The internal OPB clock runs at 1/2 the frequency of the PLB clock. The maximum OPB clock
frequency is 66.66 MHz.
2. See Table 7 for information on the TmrClk2 signal.
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