Fujitsu MHR2030AT User Manual Page 216

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Interface
5-142 C141-E145-02EN
5.6.4 Power-on and reset
Figure 5.21 shows power-on and reset (hardware and software reset) timing.
(1) Only master device is present
*1: Reset means including Power-on-Reset, Hardware Reset (RESET-), and Software Reset.
Clear Reset *1
tP
tN
tM
BSY
DASP-
Power-on
RESET-
Software reset
(2) Master and slave devices are present (2-drives configuration)
tP
Clear Reset
[Slave device]
[Master device]
tN
DASP-
PDIAG-
BSY
BSY
DASP-
tQ
tR
tS
Symbol Timing parameter Min. Max. Unit
tM Pulse width of RESET- 25
µs
tN Time from RESET- negation to BSY set 400 ns
tP Time from RESET- negation to DASP- or DIAG- negation 1 ms
tQ Self-diagnostics execution time 30 s
tR Time from RESET- negation to DASP- assertion (slave
device)
400 ms
tS Duration of DASP- assertion 31 s
Figure 5.21 Power-on Reset Timing
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