Fujitsu MAA3182FC Series, Manual

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C141-E054-02EN 1 - 17
(10) –Drive present ; This signal connected to the ground.
1.3.3 Signal function in SFF8067 mode
(1) –Parallel ESI
–Parallel ESI signal is used to request the enclosure to provide the SEL_x (x = 0-6) addressing
signals and to request ESI block Read/Write operation.
Table 1.9 defines electronic characteristics of this signal.
Table 1.10 Output Characteristics of –Parallel ESI
State Current Drive Available Output Voltage
high –100
µ
A <IOH < 100
µ
A 0< VOH <5.25V
low IOL >1.6 mA 0< VOL <0.5V
Table 1.10 shows how –Parallel ESI signal is used in the Enclosure Service Interface.
(2) –DSK_WR, DSK_RD, ENCL_ACK, D(3), D(2), D(1), D(0)
The SEL_x (x = 0-6) signals change into communication control signals when –Parallel ESI
signal is asserted.