PPC405EX-NPAFFFTX AMCC [Applied Micro Circuits Corporation], PPC405EX-NPAFFFTX Datasheet - Page 40

• Manufacturer Part Number: PPC405EX-NPAFFFTX
• Description: PowerPC 405EX Embedded Processor
• Manufacturer: AMCC [Applied Micro Circuits Corporation]

PPC405EX – PowerPC 405EX Embedded Processor
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.
40
System Interface
SysClk
SysErr
SysReset
TestEn
Halt
TmrClk
GPIO00:27
GPIO29:31
GPIO28
PSROUser
Trace Interface
TrcClk
TS0E
TS1E
TS0O
TS1O
TS0:3
Signal Name
System input clock.
Machine check exception has occurred.
Main system reset. This signal may be driven by the PPC405EX to
cause a board level reset to occur.
Test enable. Reserved for manufacturing LSSD test.
External request to stop the processor.
Processor timer external input.
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.
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.
Performance screen ring output. Use for module characterization and
screening only.
Trace interface clock. Operates at half the CPU core frequency.
Even trace execution status.
Odd trace execution status.
Trace status.
Description
Preliminary Data Sheet
Revision 1.09 - August 21, 2007
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
O
O
I
I
I
I
3.3V tolerant
3.3V tolerant
3.3V tolerant
3.3V tolerant
3.3V LVTTL
3.3V LVTTL
w/pull-down
3.3V LVTTL
3.3V LVTTL
3.3V LVTTL
3.3V LVTTL
3.3V LVTTL
3.3V LVTTL
2.5V CMOS
2.5V CMOS
2.5V CMOS
2.5V CMOS
w/pull-up
w/pull-up
receiver
receiver
receiver
receiver
Type
AMCC Proprietary
Notes
1, 2
1
3
3