B. Specifications
56
Frontplane Connectors
J1: 3½ inch IDE Drive Interface. J1 is a right angle 0.1 inch dual row interface for
connecting to 3½ inch IDE drives using CBA-90096. A total of 40 signals on this
connector are replicated on J2. The table "
J1 and J2 Pin Assignments
" indicates
the signal definition for both J1 and J2. Remotely mounted drives use this
connector for interfacing. No power is supplied via this connector.
J2: 2½ inch IDE Drive Interface. This 2 mm connector location can be loaded with
either a 2 mm header style connector for ribbon cable interfacing or a right angle
receptacle for direct mounting of the hard disk to the ZT 8952. J2 is composed of
44 signals, four being added to power the 2½ inch disk drive directly. The 40
signals remaining are in common with those of J1, and comprise the control
interface for the IDE interface. The table "
J1 and J2 Pin Assignments
" shows the
signal definition for both J1 and J2.
J3: Frontplane Interrupt Interface. J3 is a 10-pin male transition connector with 0.1 inch
pin-to-pin spacing. J3 provides a mechanism for driving the IDE interrupt to the
host processor when no backplane interrupts are available for this service. Pin
assignments are given in the following table "
Frontplane Interrupt Connector
". The
mating connector is a T&B Ansley #622-1030 or equivalent.
J4: 3½ inch Hard Disk Power Connector. This interface location provides power to
integrated 3½ inch drives when the board is shipped as a ZT 8953-XXX. The figure
below "J4 3½-Inch Drive Power Connector" illustrates the pinout for this location.
+5V
GND
AUX GND
+12V
J4 3½-Inch Drive Power Connector Pinout
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