405EZ Datasheet, PDF (35/54 Pages) Applied Micro Circuits Corporation – PowerPC 405EZ Embedded Processor

PPC405EZ – PowerPC 405EZ Embedded Processor
Revision 1.27 - August 22, 2007
Preliminary Data Sheet
Signal Functional Descriptions
The following table provides a description of the I/O signals on the PPC405EZ.
Table 6. Signal Functional Description (Sheet 1 of 6)
Notes:
1. Receiver input has hysteresis.
2. Must pull up. See “Pull-Up and Pull-Down Resistors” on page 34 for recommended termination values.
3. Must pull down. See “Pull-Up and Pull-Down Resistors” on page 34 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
Ethernet Interface
EMCCOL
Collision signal from the PHY.
I
3.3V LVTTL
EMCCRS
EMCMDC
Carrier sense signal from the PHY.
Management data clock to the PHY.
I
3.3V LVTTL
O
3.3V LVTTL
EMCMDIO
EMCRxClk
Management data I/O between the Ethernet controller and the PHY. I/O
Input receive clock from the PHY.
I
3.3V LVTTL
3.3V LVTTL
Rcvr
EMCRxDV
EMCRxEr
EMCRxD0:3
Receive data valid.
Receive error from the PHY.
Receive data from the PHY.
EMCRxD3 is the msb.
I
3.3V LVTTL
I
3.3V LVTTL
Rcvr
I
3.3V LVTTL
EMCTxClk
EMCTxD0:3
EMCTxEn
Input transmit clock from the PHY.
Transmit data to the PHY.
EMCTxD3 is the msb.
Transmit enable.
I
3.3V LVTTL
O
3.3V LVTTL
O
3.3V LVTTL
EMCTxEr
Transmit error to the PHY.
IEEE 1588 Network Synchronization Interface
O
3.3V LVTTL
IEEE_1588TS
Test signal.
IIC Peripheral Interface
O
3.3V LVTTL
IIC0SClk
IIC Serial Clock.
I/O
3.3V IIC
IIC0SData
Interrupts Interface
IIC Serial Data.
I/O
3.3V IIC
IRQ0:4
JTAG Interface
Interrupt requests.
I
3.3V LVTTL
TCK
TDI
Test clock.
Test data in.
I
3.3V LVTTL
Rcvr w/pull-up
I
3.3V LVTTL
TDO
Test data out.
O
3.3V LVTTL
TMS
TRST
Test mode select.
Test reset. Must be low at power-on to initialize the JTAG controller
and for normal operation of the PPC405EZ.
I
3.3V LVTTL
I
3.3V LVTTL
Rcvr w/pull-up
Notes
5
5
5
5
1, 5
1, 5
1, 5
5
5
5
5
AMCC Proprietary
35