Travelstar 80GN Hard Disk Drive Specification
43
extend the PIO cycle. This line can be connected to the host IORDY signal in order to insert a WAIT state(s)
into the host PIO cycle. This signal is an Open-Drain output with 16mA sink capability.
5V Power
There are two input pins for the +5 V power supply. One is the "+5 V Logic" input pin and the second is the "+5
V Motor" input pin. These two input pins are tied together within the drive.
DMACK-
This signal shall be used by the host in response to DMARQ to either acknowledge that data has been accepted,
or that data is available.
This signal is internally pulled up to 5 Volt through a 15kW resistor with a resistor tolerance value of –50% to
+100%.
DMARQ
This signal is used for DMA data transfers between the host and drive. It shall be asserted by the drive when it
is ready to transfer data to or from the host. The direction of data transfer is controlled by HIOR- and HIOW-
signals. This signal is used in a handshake mode with DMACK-. This signal is a 3-state line with 16mA sink
capability and internally pulled down to GND through a 10 kW resistor.
HDMARDY- (Ultra DMA)
This signal is used only for Ultra DMA data transfers between host and drive. The signal HDMARDY- is a flow
control signal for Ultra DMA data in bursts. This signal is held asserted by the host to indicate to the device that
the host is ready to receive Ultra DMA data in transfers. The host may negate HDMARDY- to pause an Ultra
DMA data in transfer.
HSTROBE (Ultra DMA)
This signal is used only for Ultra DMA data transfers between host and drive.
The signal HSTROBE is the data out strobe signal from the host for an Ultra DMA data out transfer. Both the
rising and falling edge of HSTROBE latch the data from DD (15:0) into the device. The host may stop toggling
HSTROBE to pause an Ultra DMA data out transfer.
STOP (Ultra DMA)
This signal is used only for Ultra DMA data transfers between host and drive.
The STOP signal shall be asserted by the host prior to initiation of an Ultra DMA burst. A STOP shall be
negated by the host before data is transferred in an Ultra DMA burst. Assertion of STOP by the host during or
after data transfer in an Ultra DMA mode signals the termination of the burst.
DDMARDY- (Ultra DMA)
This signal is used only for Ultra DMA data transfers between host and drive.
The signal DDMARDY- is a flow control signal for Ultra DMA data out bursts. This signal is held asserted by
the device to indicate to the host that the device is ready to receive Ultra DMA data out transfers. The device
may negate DDMARDY- to pause an Ultra DMA data out transfer.
DSTROBE (Ultra DMA)
This signal is used only for Ultra DMA data transfers between host and drive.
The signal DSTROBE is the data in strobe signal from the device for an Ultra DMA data in transfer. Both the
rising and the falling edge of DSTROBE latch the data from DD (15:0) into the host. The device may stop tog-
gling DSTROBE to pause an Ultra DMA data in transfer.
Содержание IC25N020ATMR04
Страница 4: ......
Страница 10: ...15 2 SET FEATURES Commands Support Coverage 197 15 3 Changes from Travelstar 60GH and 40GN 198 ...
Страница 14: ......
Страница 20: ...Travelstar 80GN Hard Disk Drive Specification 10 ...
Страница 21: ...Travelstar 80GN Hard Disk Drive Specification 11 Part 1 Functional specification ...
Страница 22: ...Travelstar 80GN Hard Disk Drive Specification 12 ...
Страница 24: ...Travelstar 80GN Hard Disk Drive Specification 14 ...
Страница 34: ...Travelstar 80GN Hard Disk Drive Specification 24 ...
Страница 48: ...Travelstar 80GN Hard Disk Drive Specification 38 ...
Страница 67: ...Travelstar 80GN Hard Disk Drive Specification 57 Part 2 Interface specification ...
Страница 68: ...Travelstar 80GN Hard Disk Drive Specification 58 ...
Страница 70: ...Travelstar 80GN Hard Disk Drive Specification 60 ...
Страница 72: ...Travelstar 80GN Hard Disk Drive Specification 62 September 19 2003 10 28 am ...
Страница 100: ...Travelstar 80GN Hard Disk Drive Specification 90 ...
Страница 106: ...Travelstar 80GN Hard Disk Drive Specification page 96 ...
Страница 131: ...Travelstar 80GN Hard Disk Drive Specification 121 ...
Страница 202: ...Travelstar 80GN Hard Disk Drive Specification 192 ...
Страница 209: ...Travelstar 80GN Hard Disk Drive Specification 199 ...
Страница 210: ...Travelstar 80GN Hard Disk Drive Specification 200 ...
Страница 213: ...Hitachi Global Storage Technologies V Vibration 33 W Write Buffer 177 Write Cache function 87 Z Zone 16 ...