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參數(shù)資料
| 型號： | HA12220 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | CD-ROM Drive Head Amplifier IC |
| 中文描述： | CD - ROM驅(qū)動頭功放IC |
| 文件頁數(shù)： | 6/20頁 |
| 文件大小： | 143K |
| 代理商： | HA12220 |
HA12220F
Rev.1, Apr. 1997, page 6 of 20
Operation
Control by Serial Data
The IC’s internal switches can be operated by sending control data from the HD49250.
The signal timing is shown in figure 1, and the control commands are listed in table 1 and 2.
DATA
CLK
XLT
T1
T2
T3
T4
0
1
2
3
4
5
6
7
Item
Clock frequency
Clock pulse width
Delay time
Latch pulse width
Symbol
Pin 15
Pin 14
Pin 16
Min
Typ
Max
Unit
f
CLK
T1, T2
T3
T4
—
0.96
1
2
—
—
—
—
520
—
—
—
kHz
μ
s
μ
s
μ
s
Figure 1 Timing Diagram for Serial Data Control
Signals from the HD49250 are input at pins 14 to 16. Pin13 is connected to the microcomputer.
A low input at the XRST pin resets the IC. Normally this pin should be kept high.
The serial data from the HD49250 switches the following settings.
1. Tracking error EF balance
2. Focus offset
3. Tracking gain, Focus gain
4. FOK Vth
5. Mirror circuit, defect circuit normal speed / 4
×
speed / 8
×
speed mode
6. Tracking error cut-off frequency
7. APC amplifier ON/OFF
8. RF equalizer
9. Stand-by mode (cleared by setting XRST on)
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| HA12220F | CD-ROM Drive Head Amplifier IC |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HA12220F | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:CD-ROM Drive Head Amplifier IC |
| HA12221F | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Audio Signal Processor for Car Deck (Decode only Dolby B type NR with PB Amp.) |
| HA12222F | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Audio Signal Processor for Car Deck(Decode only Dolby B type NR with PB Amp.) |
| HA12223F | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Audio Signal Processor for Car Deck (Decode only Dolby B type NR with PB Amp.) |
| HA12226 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Audio Signal Processor for Cassette Deck(Dolby B-type NR with Recording System) |
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