參數(shù)資料
型號: 405GPR
廠商: Applied Micro Circuits Corp.
英文描述: Power PC 405GPr Embedded Processor
中文描述: 405GPr的Power PC嵌入式處理器
文件頁數(shù): 48/57頁
文件大?。?/td> 614K
代理商: 405GPR
405GPr – Power PC 405GPr Embedded Processor
52
AMCC
Revision 2.04 – September 7, 2007
Data Sheet
OPB Divider from PLB 2
L25
EMCTxD1
J26
EMCTxD0
Divide by 1
0
Divide by 2
0
1
Divide by 3
1
0
Divide by 4
1
PCI Divider from PLB 2, 3
D18
GPIO1[TS1E]
C20
GPIO2[TS2E]
Divide by 1
0
Divide by 2
0
1
Divide by 3
1
0
Divide by 4
1
External Bus Divider from PLB 2
K25
EMCTxErr
K23
EMCTxEn
Divide by 2
0
Divide by 3
0
1
Divide by 4
1
0
Divide by 5
1
ROM Width
AC2
UART1_Tx
AD2
UART1_RTS/
UART1_DTR
8-bit ROM
0
16-bit ROM
0
1
32-bit ROM
1
0
Reserved
1
ROM Location
U2
HoldAck
PPC405GPr Peripheral Attach
0
PPC405GPr PCI Attach
1
PCI Asynchronous Mode Enable
Y3
ExtAck
Synchronous PCI Mode
0
Asynchronous Mode
1
PCI Arbiter Enable 3
AF18
GPIO4[TS2O]
Internal Arbiter Disabled
0
Internal Arbiter Enabled
1
Note:
1. The tune bits adjust parameters that control PLL jitter. The recommended values minimize jitter for the PLL implemented in the
PPC405GPr. These bits are shown for information only; and do not require modification except in special clocking circumstances such as
spread spectrum clocking. For details on the use of Spread Spectrum Clock Generators (SSCGs) with the PPC405GPr, visit the technical
documents area of the AMCC PowerPC web site.
2. Not all combinations of dividers produce valid operating configurations. Frequencies must be within the limits specified in “Clocking
Specifications” on page 43. Further requirements are detailed in the Clocking chapter of the PowerPC 405GPr Embedded Processor
User’s Manual.
3. Additional consideration must be given to pins that normally function as Trace signals. Improved design margin can be gained by using
three-state buffers instead of strapping resistors, and minimizing trace lengths and stubs.
PPC405GPr Legacy Mode Strapping Pin Assignments (Sheet 2 of 2)
Function
Option
Ball Strapping
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