PowerPC 405GP Embedded Processor Data Sheet
Signal Functional Description (Part 8 of 8)
Multiplexed signals are shown in brackets following the first signal name assigned to each multiplexed ball.
Notes:
1. Receiver input has hysteresis.
2. Must pull up. See “Pull-Up and Pull-Down Resistors” on page 33 for recommended termination values.
3. Must pull down. See “Pull-Up and Pull-Down Resistors” on page 33 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.
7. Pull-up may be required. See “External Bus Control Signals” on page 33.
Signal Name
Description
I/O
Type
Notes
Odd Trace execution status. To access this function, software
must toggle a DCR bit
5V tolerant
3.3V LVTTL
[TS1O]GPIO3
O[I/O]
1
or
General Purpose I/O.
Odd Trace execution status. To access this function, software
must toggle a DCR bit
5V tolerant
3.3V LVTTL
[TS2O]GPIO4
O[I/O]
O[I/O]
1, 6
or
General Purpose I/O.
Trace status. To access this function, software must toggle a
DCR bit
5V tolerant
3.3V LVTTL
[TS3:6]GPIO5:8
1
or
General Purpose I/O.
Trace interface clock. A toggling signal that is always half of the
CPU core frequency. To access this function, software must
toggle a DCR bit
5V tolerant
3.3V LVTTL
[TrcClk]GPIO9
O[I/O]
1
or
General Purpose I/O.
Ground pins
Ground
Note: On the 456-ball packages, L11-L16, M11-M16, N11-N16,
P11-P16, R11-R16, and T11-T16 are also thermal balls.
GND
On the 413-ball package, J11, J13, K11-K13, L11-L13, M11-
N13, N11-N13, P11-P13, R11, and R13 are also thermal
balls.
OVDD pins
OV
Output driver voltage—3.3V.
Logic voltage—2.5V.
DD
VDD pins
V
DD
Other pins
Reserved—Except for Y5 (on the 413-ball package) or AF4, do
not connect signals, voltage, or ground to these pins. Y5 (on the
Reserved
413-ball package) and AF4 must be tied to OV or GND.
DD
Page 41 of 60
6/20/03
IBM [ IBM ]
