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參數(shù)資料
| 型號： | CXA1940N |
| 廠商： | Sony Corporation |
| 元件分類： | 外設(shè)及接口 |
| 英文描述： | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
| 中文描述： | 電可擦除可編程邏輯器件 |
| 文件頁數(shù)： | 10/16頁 |
| 文件大?。?/td> | 225K |
| 代理商： | CXA1940N |
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CXA1940N
Description Functions
Read amplifier
This is a low noise amplifier amplifying the signals from the head and is an emitter follower output. It outputs
to RDX and RDY pins differentially. The head X side and RDX pin, the head Y side and RDY pin have the
same polarity. RDX, RDY outputs become high impedance in write mode (when these outputs is AC coupled
to the load).
Write circuit
Write data which is input to WDI pin passes through a T flip-flop and frequency is divided into 1/2. It then
drives the Write switch circuit and flows Write current to the head.
Write data is triggered where from “High” to “Low” and Write current is switched.
Write current flows from X side when Read changes to Write.
Mode control
Modes are set as shown in Table 1 using R/W and PS pins.
Table 1. Mode selection
Head selection
Heads are selected as shown in Table 2 using HS0 and HS1 pins.
Table 2. Head selection
R/W
PS
Mode
L
L
Write
H
L
Read
H
H
Power save
HS0
HS1
Head
L
L
0
H
L
1
L
H
2
H
H
3
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