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PPC440SPE-RNB667C 数据表(PDF) 51 Page - Applied Micro Circuits Corporation |
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PPC440SPE-RNB667C 数据表(HTML) 51 Page - Applied Micro Circuits Corporation |
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51 / 80 page ![]() PowerPC 440SPe Embedded Processor Revision 1.23 - Sept 21, 2006 AMCC Proprietary 51 Preliminary Data Sheet PCIX0Clk Input PCI & PCI-X Clock. Note:If the PCI-X interface is not being used, drive this pin with a 3.3V clock signal at a frequency between 1 and 66MHz I 3.3V PCI PCIX0DevSel Indicates the driving device has decoded its address as the target of the current access. I/O 3.3V PCI 4 PCIX0ECC5:2 ECC check bits 5–2. All ECC bits are valid only for PCIX DDR mode 2. Note:See PCIXPar for ECC0. See PCIXAck64 for ECC1. See PCIXReq64 for ECC6. See PCIXPar64 for ECC7. I/O 3.3V PCI or 1.5V PCI for mode 2 PCIX0Frame Driven by the current master to indicate beginning and duration of an access. I/O 3.3V PCI 4 PCIX0Gnt0 PCIX0Gnt1:3 Indicates that the specified agent is granted access to the PCI-X bus. When Arbitration is internal to the PPC440SPe, all GRANTS Gnt0:3 are outputs. When arbitration is external, only Gnt 0 is used as an Input. I/O O 3.3V PCI 4 PCIX0IDSel Used as a chip select during configuration read and write transactions. If the PCI-X is a Host, during Configuration the ISDSEL is an Output that duplicates the AD17. The ISDSEL is always 3.3V even in Mode 2 DDR I/O 3.3V PCI 5 PCIX0INTA Level sensitive PCI interrupt. O 3.3V PCI PCIX0IRDY Indicates initiating agent’s ability to complete the current data phase of the transaction. I/O 3.3V PCI 4 PCIX0M66En Capable of 66MHz operation. I 3.3V PCI or 1.5V PCI for mode 2 PCIX0Par/PCIX0ECC0 Even parity indicator or ECC0. Normally used to indicate even parity across PCIAD31:00 and BE3:0. Used as ECC0 for PCIX0 mode 2. I/O 3.3V PCI or 1.5V PCI for mode 2 PCIX0Par64/PCIX0ECC7 Even parity indicator or ECC7. Normally used to indicate even parity across PCIXAD63:32 and BE7:4 for PCIX0 or Used as ECC7 for PCIX0 mode 2. I/O 3.3V PCI or 1.5V PCI for mode 2 PCIX0PErr Reports data parity errors during all PCI transactions except a Special Cycle. I/O 3.3V PCI 4 PCIX0Req0 PCIX0Req1:3 An indication to the PCI-X arbiter that the specified agent wishes to use the bus. When Arbitration is internal to the PPC440SPe, all REQS Req0:3 are Inputs. When arbitration is external, only Req 0 is used as an output. I/O I 3.3V PCI 4 Table 6. Signal Functional Description (Sheet 2 of 8) Notes: 1. Receiver input has hysteresis 2. Must pull up (recommended value is 3k Ω to 3.3V) 3. Must pull down (recommended value is 1k Ω) 4. If not used, must pull up (recommended value is 3k Ω to 3.3V) 5. If not used, must pull down (recommended value is 1k Ω) 6. Strapping input during reset; pull-up or pull-down required Signal Name Description I/O Type Notes |
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