Notes For Figures 7A, 7B, 7C, 7D, 7E, And 7F - Seagate ST118273N Product Manual

Barracuda 18 Product Manual, Rev. C
8.1.1

Notes for Figures 7a, 7b, 7c, 7d, 7e, and 7f.

[1] Notes explaining the functions of the various jumpers on jumper header connectors J2, J5, 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 "LC" model drives does not have connector J5. The J5 connector signals con-
form to SFF-8009 Revision 2.0, Unitized Connector for Cabled Drives, signal assignments for auxiliary
connectors. See note [4].
[3] Reserved useage. Do not install any jumpers.
[4] Table 5 summarizes the configuration selection possibilities available on the different Barracuda 18 model
drives.
[5] These signals are also on 80 pin J1. See Table 13e.
[6] Voltage supplied by the drive.
Table 5: Drive configuration selections summary
Interface
type Function
N Drive ID
N Drive Activity LED
N Option select
W, WD, LW Drive ID
W, WD, LW Drive Activity LED
W, WD, LW Option select
WC, LC Drive ID
WC, LC Drive Activity LED
WC, LC Option select:
All Delayed Mtr Start
All Enable Mtr Start
All Write Protect
All Parity Disable
LC, LW SE (force single-ended)
("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 J5, 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 13e.
[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 J5 pins 1, 3, 5 and 7 for 250 ms after power-on or drive reset.
Jumper plugs can be used on J5 pins 1-2, 3-4, 5-6 and 7-8 to set drive ID if desired, but usually a connec-
tor/cable is plugged to J5 to run these signals to the host for remote ID selection.
[f] The host selects drive ID through J1.
Connector
J1 J6 J5
X none
Y [c] none
none
X X, Y [e]
Y [c] Y [c]
Y[f] X none
Y[b][c] Y [c] none
Y[b] none
Y[b] none
none
none
Applicable
J2 figure
7a
7a
X 7d
7b, 7c [a]
7b, 7c [a]
X 7d
7b [d]
7b [d]
X 7e, 7f
X 7e, 7f
X 7e, 7f
X 7e, 7f
X 7f
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