405EX datasheet(40/67 Pages) AMCC

40 / 67 page

PPC405EX – PowerPC 405EX Embedded Processor

AMCC Proprietary

Revision 1.09 - August 21, 2007

Preliminary Data Sheet

System Interface

SysClk

System input clock.

3.3V tolerant

2.5V CMOS

receiver

SysErr

Machine check exception has occurred.

3.3V tolerant

2.5V CMOS

SysReset

Main system reset. This signal may be driven by the PPC405EX to

cause a board level reset to occur.

I/O

3.3V tolerant

2.5V CMOS

1, 2

TestEn

Test enable. Reserved for manufacturing LSSD test.

3.3V LVTTL

receiver

w/pull-down

Halt

External request to stop the processor.

3.3V LVTTL

receiver

w/pull-up

TmrClk

Processor timer external input.

3.3V LVTTL

receiver

w/pull-up

GPIO00:27

GPIO29:31

General purpose I/O. Most of the GPIO signals are multiplexed with

other signals. Which signal is connected to the external pin depends

on the setting of bits in the GPIO registers.

I/O

3.3V LVTTL

GPIO28

General purpose I/O. Most of the GPIO signals are multiplexed with

other signals. Which signal is connected to the external pin depends

on the setting of bits in the GPIO registers.

I/O

3.3V tolerant

2.5V CMOS

PSROUser

Performance screen ring output. Use for module characterization and

screening only.

Trace Interface

TrcClk

Trace interface clock. Operates at half the CPU core frequency.

3.3V LVTTL

TS0E

TS1E

Even trace execution status.

I/O

3.3V LVTTL

TS0O

TS1O

Odd trace execution status.

I/O

3.3V LVTTL

TS0:3

Trace status.

I/O

3.3V LVTTL

Table 6. Signal Functional Description (Sheet 3 of 7)

Notes:

1. Receiver input has hysteresis.

2. Must pull up. See “Pull-Up and Pull-Down Resistors” on page 37 for recommended termination values.

3. Must pull down. See “Pull-Up and Pull-Down Resistors” on page 37 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

405EX Datasheet(PDF) 40 Page - Applied Micro Circuits Corporation

405EX Datasheet(HTML) 40 Page - Applied Micro Circuits Corporation

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