Revision 1.23 - Sept 26, 2006
Data Sheet
PowerPC 440SP Embedded Processor
Table 6. Signal Functional Description (Sheet 2 of 7)
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
PCIX0M66En
Description
Capable of 66MHz operation.
I/O
Type
Notes
5
3.3V PCI or
I
1.5V PCI for mode 2
3.3V PCI or
PCIX1:2M66En
Capable of 66MHz operation.
Even parity indicator or ECC0.
I
1.5V PCI for mode 2
3.3V PCI or
Normally used to indicate even parity across
PCIAD31:00 and BE3:0.
PCIX0:2Par/PCIX0:2ECC0
I/O
1.5V PCI for mode 2
Used as ECC0 for PCIX0:2 mode 2.
Even parity indicator or ECC7.
Normally used to indicate even parity across
PCIAD63:32 and BE7:4 for PCI0 and PCI1.
3.3V PCI or
PCIX0:1Par64/PCIX0:1ECC7
PCIX0:2PErr
I/O
1.5V PCI for mode 2
or
Used as ECC7 for PCIX0:1 mode 2.
Reports data parity errors during all PCI transactions
except a Special Cycle.
I/O
I/O
3.3V PCI
3.3V PCI
4
4
An indication to the PCI-X arbiter that the specified
agent wishes to use the bus. When using an external
PCI/PCI-X arbiter, connect the external arbiter's
Request line to this signal.
PCIX0:2Req0:1
PCIX0:1Req2:3
Request 64-bit transfer or ECC6.
Normally used by the current bus master to indicate a
64-bit transfer.
3.3V PCI or
PCIX0:1Req64/PCIX0:1ECC6
I/O
4
1.5V PCI for mode 2
or
Used as ECC6 for PCIX2 mode 2.
PCIX0:2Reset
PCIX0:2SErr
Sets PCI device registers and logic to a consistent state.
O
3.3V PCI
3.3V PCI
Reports address parity errors, data parity errors on the
Special Cycle command, or other catastrophic system
errors.
I/O
4
Indicates the current target is requesting the master to
stop the current transaction.
PCIX0:2Stop
I/O
I/O
3.3V PCI
3.3V PCI
4
4
Indicates the target agent’s ability to complete the
current data phase of the transaction.
PCIX0:2TRDY
Voltage control output. Used to control the voltage
regulator supplying the PCI I/O voltage. See PCI-XCap
signal.
PCIX0:2VC
O
I
3.3(1.5)V PCI
VPCIXDDR
0 = 3.3V (PCI I/O)
1 =1.5V (PCI-X DDR)
Voltage reference input for PCI-X mode 2/DDR (1.5V)
I/O. Not used for PCI or PCI-X mode 1.
PCIX0:2VRef0:1
5
AMCC Proprietary
57
AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
