參數(shù)資料
型號: PC8641MSH1333JB
廠商: E2V TECHNOLOGIES PLC
元件分類: 微控制器/微處理器
英文描述: MICROPROCESSOR, CBGA1023
封裝: 33 X 33 MM, 2.72 MM HEIGHT, 1 MM PITCH, ROHS COMPLIANT, CERAMIC, FC-BGA-1023
文件頁數(shù): 99/111頁
文件大?。?/td> 1660K
代理商: PC8641MSH1333JB
88
0893C–HIREL–01/10
PC8641 and PC8641D [Preliminary]
e2v semiconductors SAS 2010
19.3
e600 to MPX clock PLL Ratio
Table 19-6 describes the clock ratio between the platform and the e600 core clock. This ratio is deter-
mined by the binary value of LDP[0:3], LA[27](cfg_core_pll[0:4] - reset config name) at power up, as
shown in Table 19-6.
19.4
Frequency Options
19.4.1
Sysclk to Platform Frequency Options
Table 19-7 shows some SYSCLK frequencies and the expected MPX frequency values based on the
MPX clock to SYSCLK ratio. Note that frequencies between 400 MHz and 500 MHz are NOT supported
on the platform. See note regarding cfg_platform_freq in Section 18. ”Signal Listings” on page 75 since it
is a reset configuration pin that is related to platform frequency.
Note:
1. SYSCLK frequency range is 66-168 MHz. Platform clock/ MPX frequency range is 400 MHz, 500-
600 MHz.
Table 19-6.
e600 Core to MPX Clock Ratio
Binary Value of LDP[0:3], LA[27] Signals
e600 core:MPX Clock Ratio
01000
2:1
01100
2.5:1
10000
3:1
11100
3.5:1
10100
4:1
01110
4.5:1
Table 19-7.
Frequency Options of SYSCLK with Respect to Platform/MPX Clock Speed
MPX to
SYSCLK
Ratio
SYSCLK (MHz)
66
83
100
111
133
167
Platform/MPX Frequency (MHz)(1)
2
3
400
500
4
400
533
5
500
555
6
400
500
600
8
533
9
600
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