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參數(shù)資料
| 型號： | HA12175 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Audio Signal Processor for Car Deck and Cassette Deck (Dolby B/C-type NR with PB Amp) |
| 中文描述： | 音頻信號處理器（杜比B / C型與鉛放大器為汽車甲板上午和卡座） |
| 文件頁數(shù)： | 13/66頁 |
| 文件大?。?/td> | 1116K |
| 代理商： | HA12175 |
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HA12173 Series
Rev.1, Nov. 1992, page 13 of 66
Table 3
Switching Truth Table
Pin No.
Low
High
13
B - NR
C - NR
14
NR - OFF
NR - ON
15
PB
REC
16
TAPE
RADIO
17
120 μ (NORMAL)
70 μ (METAL or CHROME)
18
FORWARD
REVERSE
19
Notes: 1. Voltages shown above are determined by internal circuits of LSI when take pin 20 (DGND pin) as
reference pin. On split supply use, same V
TH
can be offered by connecting DGND pin to GND
pin.
This means that it can be controlled directly by microprocessor. But power supply should be
over ±5 V, notwithstanding the prescription of table 1.
2. Each pins are on pulled down with 100 k
internal resistor.
Therefore, it will be low-level when each pins are open.
3. Over shoot level and under shoot level of input signal must be the standardized (High: 5.3 V,
Low:
–
0.2 V)
4. When connecting microcomputer or Logic-IC with HA12173 series directly, there is apprehension
of rush-current under some transition timming of raising voltage or falling voltage at V
CC
ON/OFF.
On using, connect protective resistors of 10 to 22 k
to all the control pins. It is shown is test
circuit on this data sheet. And pins fixed to low level should be preferably open.
5. Pay attention not to make digital GND voltage lower than GND voltage.
SER (FF or REV)
REP (NORMAL SPEED)
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相關(guān)代理商/技術(shù)參數(shù) |
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| HA12177 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Audio Signal Processor for Car Deck and Cassette Deck (Dolby B/C-type NR with PB Amp) |
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| HA12187DP-EL-E | 制造商:Renesas Electronics Corporation 功能描述:MCU - Trays |
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