Product manual

Barracuda 9 Product Manual, Rev. C 39
8.1.1 Notes for Figures 9, 10, and 11
[1] Notes explaining the functions of the various jumpers on jumper header connectors J2, J1-Auxiliary and
J6 are given here and in Section 8.1.2. The term “default” means as standard OEM units are configured
with a jumper on those positions when shipped from factory. “Off” means no jumper is installed; “On”
means a jumper is installed. OFF or ON underlined is factory default condition.
[2] The PCB on “N,” “WC,” and “DC” model drives does not have connector J1-Auxiliary. The J1-Auxiliary
connector signals conform to SFF-8009 Revision 2.0, Unitized Connector for Cabled Drives, signal
assignments for auxiliary connectors. See Note [4] below.
[3] Reserved useage. Do not install any jumpers.
[4] Table 5 summarizes the configuration selection possibilities available on the different Barracuda 9 model
drives.
[5] These signals are also on 80 pin J1. See Tables 16 and 17.
[6] Voltage supplied by the drive.
(“X” means the function selection can be made with jumpers on that connector;
(“Y” means the signal is available to host through that connector.)
Notes for Table 5 [ ]:
[a] Use either J6 or J1-Aux, but not both.
[b] I/O connector J1 plugs directly into host. No jumper can be installed on J1. The host supplies the logic
state of these function signals causing the selection of these functions. See pinout Table 16 and 17.
[c] The host can drive a remotely located Drive Activity LED using signal.
[d] Use either J1 or J6, but not both.
[e] The drive reads the ID (asserted low) from J1-Auxiliary pins 1, 3, 5 and 7 for 250 ms after power-on or
drive reset. Jumper plugs can be used on J1-Auxiliary pins 1-2, 3-4, 5-6 and 7-8 to set drive ID if desired,
but usually a connector/cable is plugged to J1-Auxiliary to run these signals to the host for remote ID
selection.
[f] The host selects drive ID through J1.
Table 5: Drive configuration selections summary
Interface
Type Function
Connector
Applicable
FigureJ1 J6 J1-AUX J2
N Drive ID X, Y none 9
N Drive Activity LED Y [c] none 9
N Option select none X 9
W, WD Drive ID X, Y X, Y [e] 10 [a]
W, WD Drive Activity LED Y [c] Y [c] 10 [a]
W, WD Option select X 10
WC, DC Drive ID Y[f] X, Y none 11 [d]
WC, DC Drive Activity LED Y[b][c] Y [c] none 11 [d]
WC, DC Option select:
Delayed Mtr Start Y[b] none X 11
Enable Mtr Start Y[b] none X 11
Write Protect none X 11
Parity Disable none X 11