Travelstar VP
Electrical interface specifications |
Models: DDLA-21215, 21620 |
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| IDE signal connector |
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| Notes: |
- Pin position 20 is blank.
- Pin 49: When grounded, no-spin-up at POR. When open/pull-up, normal spin-up at POR.
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| Signal definition |
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| The pin assignments of interface signals are listed as follows: |
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PIN Signal I/O PIN Signal I/O
01 -HRESET 1 02 GND
03 HD07 I/O 04 HD08 I/O
05 HD06 I/O 06 HD09 I/O
07 HD05 I/O 08 HD10 I/O
09 HD04 I/O 10 HD11 I/O
11 HD03 I/O 12 HD12 I/O
13 HD02 I/O 14 HD13 I/O
15 HD01 I/O 16 HD14 I/O
17 HD00 I/O 18 HD15 I/O
19 GND (20) Key
21 DMARQ O 22 GND
23 -HIOW I 24 GND
25 -HIOR I 26 GND
27 HIORDY O 28 CSEL I
29 -DMACK I 30 GND
31 HIRQ O 32 -HIOCS16 O
33 HA01 I 34 -PDIAG I/O
35 HA00 I 36 HA02 I
37 -HCSO I 38 -HCS1 I
39 -DASP I/O 40 GND
41 +5V Logic PWR 42 +5V Motor PWR
42 GND 44 (Resv)
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| Notes: |
- "O" designates an output from the drive.
- "I" designates an input to the drive.
- "I/O" designates an input/output common.
- "PWR" designates a power supply to the drive.
- "(Resv)" designates reserved pins which must be left unconnected.
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| +5 volt power supply |
There are two input pins for +5 Volt power supply, "+5V Logic" and "+5V Motor." "+5V Logic" is connected to the internal logic circuits and "+5V
Motor" is connected to the spindle motor and motor drive. |
It is possible to turn on and off "+5V Logic" by an external switch circuit to reduce power consumption to the least possible. In this mode, a voltage drop out due to the motor
spin up current can be reduced by connecting "+5V Motor" line into the system power source directly. |
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