IBM25PPC440GX IBM Microelectronics, IBM25PPC440GX Datasheet - Page 58

• Manufacturer Part Number: IBM25PPC440GX
• Description: PowerPC 440GX Embedded Processor
• Manufacturer: IBM Microelectronics

Preliminary
I/O Specifications—All Speeds
Notes:
1. Ethernet interface meets timing requirements as defined by IEEE 802.3 standard.
2. PCI-X timings are for asynchronous operation up to 133MHz. PCI-X input setup time requirement is 1.2ns for 133MHz
3. The clock frequency for RMII operation is 50MHz ± 100ppm.
4. The clock frequency for SMII operation is 125MHz ± 100ppm.
5. These are DDR signals that can change on both the positive and negative clock transitions.
Page 58 of 74
Ethernet RMII Interface
EMC0RxD0:1
EMC0RxErr
EMC0CrSDV
EMC0TxD0:1
EMC0:1TxEn
EMC1RxD0:1
EMC1RxErr
EMC1CrSDV
EMC1TxD0:1
EMCRefClk
Ethernet SMII Interface
EMC0:1RxD
EMC2:3RxD
EMC0:1TxD
EMC2:3TxD
EMCRefClk
Ethernet GMII Interface
GMCRxClk
GMCRxD0:7
GMCRxEr
GMCRxDv
GMCCrS
GMCol
GMCGTxClk
GMCTxD0:7
GMCTxEr
GMCTxEn
and 1.7ns for 66MHz. PCI timings (in parentheses) are for asynchronous operation up to 66MHz. PCI output hold time
requirement is 1ns for 66MHz and 2ns for 33MHz.
Signal
Setup Time
(T
IS
n/a
n/a
n/a
n/a
0.8
0.8
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
2
2
2
2
2
min)
Input (ns)
PowerPC 440GX Embedded Processor Data Sheet
Hold Time
(T
IH
n/a
n/a
n/a
n/a
0.8
0.8
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
1
1
0
0
0
min)
(Part 2 of 5)
Valid Delay
(T
OV
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
6.2
6.2
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
5.5
5.5
5.5
11
11
11
max)
Output (ns)
Hold Time
(T
OH
n/a
n/a
n/a
na/
na/
n/a
n/a
n/a
n/a
n/a
0.5
0.5
n/a
n/a
n/a
n/a
n/a
n/a
n/a
0.5
2
2
2
2
2
min)
(minimum)
Output Current (mA)
I/O H
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
n/a
5.1
5.1
5.1
5.1
n/a
n/a
5.1
5.1
5.1
5.1
5.1
n/a
5.1
5.1
5.1
(minimum)
I/O L
6.8
6.8
6.8
6.8
6.8
6.8
6.8
6.8
6.8
n/a
6.8
6.8
6.8
6.8
n/a
n/a
6.8
6.8
6.8
6.8
6.8
n/a
6.8
6.8
6.8
GMCGTxClk
GMCGTxClk
GMCGTxClk
EMCRefClk
EMCRefClk
EMCRefClk
EMCRefClk
EMCRefClk
EMCRefClk
EMCRefClk
EMCRefClk
EMCRefClk
EMCRefClk
EMCRefClk
EMCRefClk
EMCRefClk
GMCRxClk
GMCRxClk
GMCRxClk
Clock
3, async
4, async
1, async
1, async
1, async
1, async
2/12/04
Notes