Revision 1.26 – April 25, 2007
440EP – PPC440EP Embedded Processor
Data Sheet
Table 6. Signal Functional Description (Sheet 1 of 9)
Notes:
1. Receiver input has hysteresis
2. Must pull up (recommended value is 3kΩ to 3.3V)
3. Must pull down (recommended value is 1kΩ)
4. If not used, must pull up (recommended value is 3kΩ to 3.3V)
5. If not used, must pull down (recommended value is 1kΩ)
6. Strapping input during reset; pull-up or pull-down required
Signal Name
PCI Interface
PCIAD00:31
PCIC0:3/BE0:3
PCIClk
PCIDevSel
PCIFrame
Address/Data bus (bidirectional).
PCI Command/Byte Enables
.
Provides timing to the PCI interface for PCI transactions.
Indicates the driving device has decoded its address as the
target of the current access.
Driven by the current master to indicate beginning and
duration of an access.
Indicates that the specified agent is granted access to the bus.
When the internal arbiter is enabled, output is PCIGnt0. When
the internal arbiter is disabled, output is Req.
Indicates that the specified agent is granted access to the bus.
Used only when internal PCI arbiter enabled.
Used as a chip select during configuration read and write
transactions.
Level sensitive PCI interrupt.
Indicates initiating agent’s ability to complete the current data
phase of the transaction.
Even parity.
Reports data parity errors during all PCI transactions except a
Special Cycle.
Indicates to the PCI arbiter that the specified agent wishes to
use the bus. When the internal arbiter is enabled, input is
PCIReq0. When internal arbiter is disabled, input is Gnt.
An indication to the PCI arbiter that the specified agent wishes
to use the bus. Used only when internal PCI arbiter enabled.
Brings PCI device registers and logic to a consistent state.
Reports address parity errors, data parity errors on the Special
Cycle command, or other catastrophic system errors.
Current target is requesting the master to stop the current
transaction.
I/O
I/O
I
I/O
I/O
3.3V PCI
3.3V PCI
3.3V PCI
3.3V PCI
3.3V PCI
Description
I/O
Type
Notes
PCIGnt0/Req
O
3.3V PCI
PCIGnt1:5
PCIIDSel
PCIINT
PCIIRDY
PCIPar
PCIPErr
O
I
O
I/O
I/O
I/O
3.3V PCI
3.3V PCI
3.3V PCI
3.3V PCI
3.3V PCI
3.3V PCI
PCIReq0/Gnt
I
3.3V PCI
PCIReq1:5
PCIReset
PCISErr
PCIStop
PCITRDY
I
O
I/O
I/O
I/O
3.3V PCI
3.3V PCI
3.3V PCI
3.3V PCI
3.3V PCI
T
arget agent’s ability to complete the current data phase of the
transaction.
50
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AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
