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參數(shù)資料
| 型號(hào)： | MB4138 |
| 廠商： | Fujitsu Limited |
| 英文描述： | Read/Write Amplifier(讀/寫放大器) |
| 中文描述： | 讀/寫放大器（讀/寫放大器） |
| 文件頁數(shù)： | 11/18頁 |
| 文件大?。?/td> | 138K |
| 代理商： | MB4138 |
MB4138
11
I
FUNCTIONS
1. Mode Selection
Operation Mode
MR Bias Current
CS Pin Voltage
R/W Pin Voltage
RS Pin Voltage
Idle (I)
OFF
H
—
—
Read (R)
ON
L
H
—
Write 1 (W1)
OFF
L
L
H
Write 2 (W2)
ON
L
L
L
2. Head Selection
Head
HS0
HS1
HS2
0
L
L
L
1
H
L
L
2
L
H
L
3
H
H
L
4
L
L
H
5
H
L
H
3. WUS (Write Unsafe) Output Truth Table
Operation mode
Conditions
WUS
Idle (I)
—
H
Read (R)
—
H
Write (W)
Normal
L
When one or more of the following faults is present:
Write data frequency too low.
Write head pin is open (fWD< 9MHz).
No write current, or current is too low.
H
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