Revision 1.12 - Novenber 20, 2007
PPC405EX – PowerPC 405EX Embedded Processor
Preliminary Data Sheet
Signal Functional Descriptions
The following table provides a description of the I/O signals on the PPC405EX.
Table 6. 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 38 for recommended termination values.
3. Must pull down. See “Pull-Up and Pull-Down Resistors” on page 38 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
GMCCD,
GMII: Collision detect.
RGMII 1: Receive clock.
3.3V tolerant
2.5V CMOS
I
1, 5
1
GMC1RxClk
GMCCrS,
GMII: Carrier sense.
3.3V tolerant
2.5V CMOS
I/O
O
GMC1TxClk
RGMII 1: Transmit clock.
GMCGTxClk,
GMC0TxClk
GMII: 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, RGMII: Reference clock for 1000Mbps.
I
1, 5
GMCRxClk,
GMC0RxClk
GMII: Receive clock.
3.3V tolerant
2.5V CMOS
I
I
1, 5
1
RGMII 0: Receive clock.
GMCRxD0:3,
GMC0RxD0:3
GMII: Receive data.
3.3V tolerant
2.5V CMOS
RGMII 0: Receive data.
GMCRxD4:7,
GMC1RxD0:3
GMII: Receive data.
3.3V tolerant
2.5V CMOS
I
1
RGMII 1: Receive data.
GMCRxDV,
GMC0RxCtl
GMII: Receive data valid.
RGMII 0: Receive control.
3.3V tolerant
2.5V CMOS
I
1
GMCRxEr,
GMII: Receive error.
3.3V tolerant
2.5V CMOS
I
1
GMC1RxCtl
RGMII 1: Receive control.
3.3V tolerant
2.5V CMOS
GMCTxClk
GMII: Transmit clock for 10/100Mbps.
I
1, 5
GMCTxD0:3,
GMC0TxD0:3
GMII: Transmit data.
3.3V tolerant
2.5V CMOS
O
O
O
O
RGMII 0: Transmit data.
GMCTxD4:7,
GMC1TxD0:3
GMII: Transmit data.
3.3V tolerant
2.5V CMOS
RGMII 1: Transmit data.
GMCTxEn,
GMC0TxCtl
GMII: Transmit enable.
3.3V tolerant
2.5V CMOS
RGMII 0: Transmit control.
GMCTxEr,
GMII: Transmit error.
3.3V tolerant
2.5V CMOS
GMC1TxCtl
RGMII 1: Transmit control.
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
39
AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
