PPC440GR-3PBFFFCX AMCC [Applied Micro Circuits Corporation], PPC440GR-3PBFFFCX Datasheet - Page 56

• Manufacturer Part Number: PPC440GR-3PBFFFCX
• Description: Power PC 440GR Embedded Processor
• Manufacturer: AMCC [Applied Micro Circuits Corporation]

Table 7. Signal Functional Description (Sheet 7 of 8)
Notes:
1. Receiver input has hysteresis
2. Must pull up (recommended value is 3kΩ to 3.3V)
3. Must pull down (recommended value is 1kΩ)
4. If not used, must pull up (recommended value is 3kΩ to 3.3V)
5. If not used, must pull down (recommended value is 1kΩ)
6. Strapping input during reset; pull-up or pull-down required
56
System Interface
SysClk
SysErr
SysReset
Halt
TmrClk1
TmrClk2
GPIO00:63
TestEn
RcvrInh
ModeCtrl
LeakTest
RefEn
DrvrInh1:2
PSROOut
Revision 1.16 – July 19, 2006
Preliminary Data Sheet
Signal Name
Main system clock input.
Set to 1 when a machine check is generated.
Receiver Inhibit. Active only when TestEn is active.
Mode Control.
Leakage Test.
Reference Enable.
Module characterization and screening.
Main system reset. External logic can drive this bidirectional
pin low (minimum of 16 cycles) to initiate a system reset. A
system reset can also be initiated by software. Implemented as
an open-drain output (two states; 0 or open circuit).
Halt from external debugger.
Processor timer external input clock.
This signal must be connected to a clock. It can be connected
to any available clocking signal in the frequency range of
32kHz to 100MHz including TmrClk1.
General purpose I/O 0 through 63. To access these functions,
software must set DCR register bits.
Test Enable.
Driver Inhibit. Used for test purposes only. Tie up as specified
in Note 2 for normal operation.
Description
440GR – PPC440GR Embedded Processor
Clock
I/O
I/O
I/O
O
O
I
I
I
I
I
I
I
I
I
3.3V tolerant
3.3V tolerant
3.3V tolerant
3.3V tolerant
3.3V tolerant
2.5V CMOS
2.5V CMOS
2.5V CMOS
2.5V CMOS
2.5V CMOS
3.3V LVTTL
3.3V LVTTL
Perf screen
Multiplex
Multiplex
Multiplex
Multiplex
Multiplex
Multiplex
ring osc
Type
AMCC Proprietary
Notes
1, 2
1, 4
1, 3
3
2