Revision 1.10 - July 10, 2008
PPC405EXr – PowerPC 405EXr Embedded Processor
Preliminary Data Sheet
Signal Functional Descriptions
The following table provides a description of the I/O signals on the PPC405EXr.
Table 7. Signal Functional Description (Sheet 1 of 7)
Notes:
1. Receiver input has hysteresis.
2. Must pull up. See “Pull-Up and Pull-Down Resistors” on page 39 for recommended termination values.
3. Must pull down. See “Pull-Up and Pull-Down Resistors” on page 39 for recommended termination values.
4. If not used, must pull up.
5. If not used, must pull down.
6. Strapping input during reset; pull up or pull down as required.
Signal Name
Description
I/O
Type
Notes
Ethernet Interface
3.3V tolerant
2.5V CMOS
GMCCD
GMCCrS
GMII/MII: Collision detect.
GMII/MII: Carrier sense.
I
1, 5
1
3.3V tolerant
2.5V CMOS
I/O
O
GMCGTxClk,
GMC0TxClk
GMII/MII: Transmit clock for GMII 1000Mbps.
RGMII 0: Transmit clock.
3.3V tolerant
2.5V CMOS
3.3V tolerant
2.5V CMOS
GMCMDClk
GMCMDIO
Management data clock.
Management data I/O.
O
3.3V tolerant
2.5V CMOS
I/O
3.3V tolerant
2.5V CMOS
receiver
GMCRefClk
GMII/MII, RGMII: Required 125MHz reference clock.
I
1, 5
GMCRxClk,
GMC0RxClk
GMII/MII: Receive clock.
RGMII 0: Receive clock.
3.3V tolerant
2.5V CMOS
I
I
1, 5
1
GMCRxD0:3,
GMC0RxD0:3
GMII/MII: Receive data.
RGMII 0: Receive data.
3.3V tolerant
2.5V CMOS
3.3V tolerant
2.5V CMOS
GMCRxD4:7
GMII/MII: Receive data.
I
1
GMCRxDV,
GMC0RxCtl
GMII/MII: Receive data valid.
RGMII 0: Receive control.
3.3V tolerant
2.5V CMOS
I
1
3.3V tolerant
2.5V CMOS
GMCRxEr
GMCTxClk
GMII/MII: Receive error.
I
1
3.3V tolerant
2.5V CMOS
GMII/MII: Transmit clock for 10/100Mbps.
I
1, 5
GMCTxD0:3,
GMC0TxD0:3
GMII/MII: Transmit data.
RGMII 0: Transmit data.
3.3V tolerant
2.5V CMOS
O
O
O
O
3.3V tolerant
2.5V CMOS
GMCTxD4:7
GMII/MII: Transmit data.
GMCTxEn,
GMC0TxCtl
GMII/MII: Transmit enable.
RGMII 0: Transmit control.
3.3V tolerant
2.5V CMOS
3.3V tolerant
2.5V CMOS
GMCTxEr
GMII/MII: Transmit error.
IIC Interface
IIC0SClk
IIC Serial Clock.
IIC Serial Data.
IIC Serial Clock.
IIC Serial Data.
I/O
I/O
I/O
I/O
3.3V LVTTL
3.3V LVTTL
3.3V LVTTL
3.3V LVTTL
1, 2
2
IIC0SData
IIC1SClk
1
IIC1SData
1
AMCC Proprietary
41
AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
