Quantum FIREBALL PLUS AS 10.2 User Manual

ATA Bus Interface and ATA Commands
6-6 Quantum Fireball Plus AS 10.2/20.5/30.0/40.0/60.0 GB AT
Series termination resistors are required at both the host and the device for
operation in any of the Ultra ATA/100 modes. Table 6-2 describes recommended
values for series termination at the host and the device.
Table 6-2
Table 6-2 Table 6-2
Table 6-2
Series Termination for Ultra ATA/100
Note:
Note:Note:
Note: Only those signals requiring termination are listed in this table.
If a signal is not listed, series termination is not required for
operation in an Ultra ATA/100 mode.
Drive Active/Slave
Present
DASP– I/O 39 A time-multiplexed signal that indicates either
drive activity or that drive 1 is present. During
power-on initialization, DASP– is asserted by drive
1 within 400 ms to indicate that drive 1 is present.
If drive 1 is not present, drive 0 asserts DASP– after
450 ms to light the drive-activity LED.
An open-collector output signal, DASP– is
deasserted following the receipt of a valid
command by drive 1 or after the drive is ready,
whichever occurs first. Once DASP– is deasserted,
either hard drive can assert DASP– to light the
drive-activity LED. Each drive has a 10K pull-up
resistor on this signal.
If an external drive-activity LED is used to monitor
this signal, an external resistor must be connected
in series between the signal and a +5 volt supply
in order to limit the current to 24 mA maximum.
Ground Ground — 40 Ground between the host system and the drive.
SIGNAL
SIGNALSIGNAL
SIGNAL HOST TERMINATION
HOST TERMINATIONHOST TERMINATION
HOST TERMINATION DEVICE TERMINATION
DEVICE TERMINATIONDEVICE TERMINATION
DEVICE TERMINATION
–/HDMARDY–/HSTROBE 33 W 82 W
DIOW–/STOP 33 W 82 W
CS0–, CS1– 33 W 82 W
DA0, DA1, DA2 33 W 82 W
DMACK– 33 W 82 W
DD 15 through DD0 33 W 22 W
DMARQ 82 W 22 W
INTRQ 82 W 22 W
IORDY/DDMARDY–/DSTROBE 82 W 22 W
DIOR 43 W
Table 6-1
Table 6-1 Table 6-1
Table 6-1
Drive Connector Pin Assignments (J1, Section C) (Continued)
SIGNAL
SIGNALSIGNAL
SIGNAL NAME
NAMENAME
NAME DIR
DIRDIR
DIR PIN
PINPIN
PIN DESCRIPTION
DESCRIPTIONDESCRIPTION
DESCRIPTION

Quantum FIREBALL PLUS AS 10.2 Specifications

General

Brand	Quantum
Model	FIREBALL PLUS AS 10.2
Category	Storage
Language	English