ppc440grx Applied Micro Circuits Corporation (AMCC), ppc440grx Datasheet - Page 63

• Manufacturer Part Number: ppc440grx
• Description: Powerpc 440grx Embedded Processor
• Manufacturer: Applied Micro Circuits Corporation (AMCC)

Revision 1.11 – July 22, 2008
Table 9. Signal Functional Description (Sheet 7 of 8)
Notes:
1. Receiver input has hysteresis
2. Must pull up (recommended value is 3kΩ to OV
3. Must pull down (recommended value is 1kΩ)
4. If not used, must pull up (recommended value is 3kΩ to OV
5. If not used, must pull down (recommended value is 1kΩ)
6. Strapping input during reset; pull-up or pull-down required
AMCC Proprietary
Preliminary Data Sheet
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.
Processor timer external input clock.
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.
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.
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)
440GRx – PPC440GRx Embedded Processor
(EOV
DD
for Ethernet)
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
3.3V tolerant
3.3V tolerant
3.3V tolerant
3.3V tolerant
3.3V tolerant
3.3V tolerant
2.5V CMOS
3.3V LVTTL
2.5V CMOS
2.5V CMOS
3.3V LVTTL
3.3V LVTTL
3.3V LVTTL
2.5V CMOS
2.5V CMOS
3.3V LVTTL
Rcvr w/pull-
3.3V LVTTL
2.5V CMOS
3.3V LVTTL
3.3V LVTTL
w/pull-up
w/pull-up
Thermal
monitor
down
Type
Rcvr
osc
Notes
1, 2
1, 3
1
1
1
1
1
1
1
1
5
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