PowerPC 750FL RISC Microprocessor
Preliminary
Table 5-5 summarizes the driver impedance characteristics a designer uses to design a typical process.
Table 5-5. Driver Impedance Characteristics
Process
Worst
Typical
Best
60x Impedance (Ω)
OVDD (V)
1.70
1.80
1.90
238
Temperature (°C)
50
44
36
50
44
36
65
50
35
105
65
0
Worst
Typical
Best
105
65
0
2.50
2.63
3.14
3.30
3.46
Worst
Typical
Best
105
65
0
5.4.1 Input-Output Use
Table 5-6 Input/Output Use provides details on the input-output usage of the PowerPC 750FL RISC Micro-
processor signals. The Usage Group column refers to the general functional category of the signal.
In the PowerPC 750FL RISC Microprocessor, certain input-output signals have pullups and pulldowns, which
might or might not be enabled. In Table 5-6 Input/Output Use on page 51, the Input/Output with Internal
Resistors column defines which signals have pullups or pulldowns and their active or inactive state. The Level
Protect column defines which signals have the designated function added to their input/output cell. For more
information about level protection, see Section 5.5 Level Protection on page 55.
Caution: This section is based on preliminary information and is subject to change.
Pull L2_TSTCLK and LSSD_MODE high for normal operation.
Pins shown as no connect (NC) must not be connected.
Connect all GND pins to ground. Connect all V and OV pins to the appropriate supply.
DD
DD
System Design Information
Page 50 of 65
750flds60.fm.6.0
April 27, 2007
IBM [ IBM ]
