PPC440EPX-NPAFFFTS AMCC [Applied Micro Circuits Corporation], PPC440EPX-NPAFFFTS Datasheet - Page 64
PPC440EPX-NPAFFFTS
Manufacturer Part Number
PPC440EPX-NPAFFFTS
Description
PowerPC 440EPx Embedded Processor
Manufacturer
AMCC [Applied Micro Circuits Corporation]
Datasheet
1.PPC440EPX-NPAFFFTS.pdf
(94 pages)
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440EPx – PPC440EPx Embedded Processor
Table 8. Signal Functional Description (Sheet 8 of 9)
Notes:
1. Receiver input has hysteresis
2. Must pull up (recommended value is 3 kΩ to OV
3. Must pull down (recommended value is 1 kΩ)
4. If not used, must pull up (recommended value is 3 kΩ to OV
5. If not used, must pull down (recommended value is 1 kΩ)
6. Strapping input during reset; pull-up or pull-down required
64
System Interface
SysClk
SysErr
SysReset
Halt
TmrClk
GPIO00:15
GPIO22:23
GPIO26:48
GPIO16:21
GPIO24:25
GPIO49:63
TestEn
RcvrInh
ModeCtrl
LeakTest
LeakTest2
RefEn
DrvrInh1:2
TherMonA:B
PSROOut
Signal Name
Main system clock input.
Set to 1 when a machine check is generated.
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.
General purpose I/O. To access these functions, software must
set DCR register bits.
General purpose I/O. To access these functions, software must
set DCR register bits.
General purpose I/O. To access these functions, software must
set DCR register bits.
Test Enable.
Note: Do not connect for normal operation.
Receiver Inhibit. Active only when TestEn is active. Used for
manufacturing test only.
Mode Control. Active only when TestEn is active. Used for
manufacturing test only.
Leakage Test. Active only when TestEn is active. Used for
manufacturing test only.
Reference Enable. Active only when TestEn is active. Used for
manufacturing test only.
Driver Inhibit. Active only when TestEn is active. Used for
manufacturing test only. Tie up as specified in Note 2 for normal
operation.
On-chip PNP thermal monitor transistor.
A is the emitter and B is the base. The collector is grounded.
Module characterization and screening. Use for test purposes
only. Tie down as specified in Note 3 for normal operation.
DD
(EOV
Description
DD
DD
for Ethernet)
(EOV
DD
for Ethernet)
Revision 1.26 – October 15, 2007
Preliminary Data Sheet
I/O
I/O
I/O
I/O
I/O
O
O
I
I
I
I
I
I
I
I
I
I
Perf screen ring
Rcvr w/pull-up
3.3 V tolerant
3.3 V tolerant
3.3 V tolerant
3.3 V tolerant
3.3 V tolerant
3.3 V tolerant
2.5V CMOS
2.5V CMOS
2.5V CMOS
3.3V LVTTL
3.3V LVTTL
3.3V LVTTL
2.5V CMOS
2.5V CMOS
3.3V LVTTL
3.3V LVTTL
2.5V CMOS
3.3V LVTTL
3.3V LVTTL
3.3 V LVTTL
Rcvr w/pull-
w/pull-up
w/pull-up
oscillator
Thermal
monitor
down
Type
Rcvr
AMCC Proprietary
Notes
1, 2
1, 3
1
1
1
1
1
1
1
1
5
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