AMD Geode™ SC2200 Processor Data Book 381
Electrical Specifications 32580B
9.3 AC Characteristics
The tables in this section list the following AC characteris-
tics:
Output delays
Input setup requirements
Input hold requirements
Output float delays
Power-up sequencing requirements
The default levels for measurement of the rising clock edge
reference voltage (VREF), and other voltages are shown in
Table 9-16. Input or output signals must cross these levels
during testing. Unless otherwise specified, all measure-
ment points in this section conform to these default levels.
All AC tests are at VIO = 3.14V to 3.46V (3.3V nominal),
TC = 0 oC to 85 oC, CL = 50 pF, unless otherwise specified.

Figure 9-2. General Drive level and Measurement Points

Table 9-11. Default Levels for Measurement of

Switching Parameters

Symbol Parameter Value (V)
VREF Reference Voltage 1.5
VIHD Input High Drive Voltage 2.0
VILD Input Low Drive Voltage 0.8
VOHD Output High Drive Voltage 2.4
VOLD Output Low Drive Voltage 0.4
CLK
Outputs
Inputs
VIHD
VILD
VREF
Valid Input
Valid Output n+1
Valid Output n
VREF
VREF
VILD
VIHD
Min
Max
Legend: A = Maximum Output or Float Delay Specification
B = Minimum Output or Float Delay Specification
C = Minimum Input Setup Specification
D = Minimum Input Hold Specification
TX
B
A
CD
VOHD
VOLD