
DSP56311 Technical Data, Rev. 8
2-36
Freescale Semiconductor
Specifications
2.4.10 Considerations For GPIO Use
2.4.10.1 Operating Frequency of 100 MHz or Less
Table 2-18.
GPIO Timing
No.
Characteristics
Expression
100 MHz
Unit
Min
Max
490
CLKOUT edge to GPIO out valid (GPIO out delay time)
—8.5
ns
491
CLKOUT edge to GPIO out not valid (GPIO out hold time)
0.0
—
ns
492
GPIO In valid to CLKOUT edge (GPIO in set-up time)
8.5
—
ns
493
CLKOUT edge to GPIO in not valid (GPIO in hold time)
0.0
—
ns
494
Fetch to CLKOUT edge before GPIO change
Minimum: 6.75
× TC
67.5
—
ns
Note:
VCC = 3.3 V ± 0.3 V; TJ = 40°C to +100 °C, CL = 50 pF.
Figure 2-34.
GPIO Timing
Valid
GPIO
(Input)
GPIO
(Output)
CLKOUT
(Output)
Fetch the instruction MOVE X0,X:(R0); X0 contains the new value of GPIO
and R0 contains the address of the GPIO data register.
A[0–17]
490
491
492
494
493