Interface

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

Clear Reset *1

Power-on

RESET- tM

Software reset

tN

BSY

DASP-

tP

*1: Reset means including Power-on-Reset, Hardware Reset (RESET-), and Software Reset.

(2) Master and slave devices are present (2-drives configuration)

Clear Reset

[Master device]

 

tN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BSY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DASP-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

[Slave device]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BSY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tQ

 

 

 

 

 

 

PDIAG-

 

 

 

tP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tS

 

 

 

 

 

 

 

DASP-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Symbol

 

 

Timing parameter

 

 

 

 

Min.

Max.

 

Unit

 

 

 

 

 

 

 

 

 

 

 

tM

 

Pulse width of RESET-

 

 

 

 

25

 

s

 

 

 

 

 

 

 

 

 

 

 

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

 

400

 

ms

 

 

device)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tS

 

Duration of DASP- assertion

 

 

 

 

31

 

s

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 5.21 Power-on reset timing

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Image 240
Fujitsu MHV2100AH, MHV2060AH, MHV2080AH, MHV2040AH manual Power-on and reset, Only master device is present

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