Power-On And Reset; Power-On Reset Timing - Fujitsu MPB3021AT Product Manual

5.6.5

Power-on and reset

Figure 5.22 shows power-on and reset (hardware and software reset) timing.
(1) Only master device is present
Power-on
RESET-
Software reset
BSY
DASP-
*1: Reset means including Power-on-Reset, Hardware Reset (RESET-), and Software Reset.
(2) Master and slave devices are present (2-drives configuration)
[Master device]
BSY
DASP-
[Slave device]
BSY
PDIAG-
DASP-
Symbol
tM Pulse width of RESET-
tN Time from RESET- negation to BSY set
tP Time from RESET- negation to DASP- or DIAG- negation
tQ Self-diagnostics execution time
tR Time from RESET- negation to DASP- assertion (slave device)
tS Duration of DASP- assertion
5 - 90
Clear Reset *1
tM
tN
tP
Clear Reset
tN
tP
tR
Timing parameter
Figure 5.22 Power-on Reset Timing
C141-E045-02EN
tQ
tS
Min.
25
—
—
—
—
—
Max. Unit
—
s
400 ns
1 ms
30 s
400 ms
31 s