FUJITSU MHD2032AT - Manual (Page 179)

Interface
5-108 C141-E050-02EN
5.6.5 Power-on and reset
Figure 5.11 shows power-on and reset (hardware and software reset) timing.
(1) Only master device is present
(2) Master and slave devices are present (2-drives configulation)
Figure 5.23 Power on Reset Timing
31
Power-on Reset
RESET–
PDIAG- negation