ppc440spe Applied Micro Circuits Corporation (AMCC), ppc440spe Datasheet - Page 53

• Manufacturer Part Number: ppc440spe
• Description: Powerpc 440spe Embedded Processor
• Manufacturer: Applied Micro Circuits Corporation (AMCC)

PowerPC 440SPe Embedded Processor
Table 6. Signal Functional Description (Sheet 4 of 8)
Notes:
1. Receiver input has hysteresis
2. Must pull up (recommended value is 3k: to 3.3V
3. Must pull down (recommended value is 1k:)
4. If not used, must pull up (recommended value is 3k: to 3.3V)
5. If not used, must pull down (recommended value is 1k:)
6. Strapping input during reset; pull-up or pull-down required
AMCC Proprietary
MemDCFdbkD
MemDCFdbkR
MemODT0:3
MemVRef0
MemVRef1
RAS
WE
Ethernet Interface
EMCCD
EMCCrS
EMCMDClk
EMCMDIO
EMCRxD0:7
EMCRxDV
EMCRxErr
EMCRxClk
EMCRefClk
EMCTxClk
EMCGTxClk
EMCTxD0:7
EMCTxEn
EMCTxErr
Signal Name
Feedback driver, for I/O timing measurements.
Feedback receiver. Connect externally to
MemDCFdbkD.
Memory on-die termination control
Memory reference voltage (SV REF ) input.
Memory reference voltage (SV REF ) supplemental input.
Row Address Strobe.
Write Enable.
Collision detection.
Carrier sense.
Management data clock.
Transfer command and status information between MII
and PHY.
Receive data.
Receive data valid.
Receive error.
Receive clock.
Reference clock.Typical use: GMII Gigabit interface
Transmit clock for 10/100 Mb/s.
Ethernet gigabit transmit clock. 125MHz to PHY
Transmit data.
Transmit data enabled.
Transmit error.
Description
I/O
I/O
O
O
O
O
O
O
O
O
O
Preliminary Data Sheet
I
I
I
I
I
I
I
I
I
I
I
DDR SDRAM
DDR SDRAM
DDR SDRAM
DDR SDRAM
DDR SDRAM
DDR SDRAM
DDR SDRAM
Volt Ref Sup
Volt Ref Rcv
3.3V LVTTL
3.3V LVTTL
3.3V LVTTL
3.3V LVTTL
3.3V LVTTL
3.3V LVTTL
3.3V LVTTL
3.3V LVTTL
3.3V LVTTL
3.3V LVTTL
3.3V LVTTL
3.3V LVTTL
3.3V LVTTL
3.3V LVTTL
2.5(1.8)V
2.5(1.8)V
2.5(1.8)V
2.5(1.8)V
2.5(1.8)V
2.5(1.8)V
2.5(1.8)V
Revision 1.23 - Sept 21, 2006
Type
Notes
53