HA12163 Datasheet, PDF (16/66 Pages) Hitachi Semiconductor – Audio Signal Processor for Car Deck and Cassette Deck (Dolby B-type NR with PB Amp)

HA12163 Series
3. Operating Mode Control
HA12163 series provide fully electronic switching circuits. And each operating mode control are
controlled by parallel data (DC voltage).
Table 2 Threshold Voltage (V_TH)
Pin No.
Low
High
Unit
14, 15, 16, 17, –0.2 to 1.5
3.5 to 5.3
V
18, 19
Test conditions
Input Pin
Measure
22 k
V
Table 3 Switching Truth Table
Pin No.
Low
High
14
NR - OFF
NR - ON
15
PB
REC
16
TAPE
RADIO
17
120 µ (NORMAL)
70 µ (METAL or CHROME)
18
FORWARD
REVERSE
19
SER (FF or REV)
REP (NORMAL SPEED)
Notes: 1. Each pins are on pulled down with 100 kΩ internal resistor.
Therefore, it will be low-level when each pins are open.
2. Over shoot level and under shoot level of input signal must be the standardized (High: 5.3 V,
Low: –0.2 V)
3. When connecting microcomputer or Logic-IC with HA12163 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 kΩ 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.
4. Pay attention not to make digital GND voltage lower than GND voltage.
Rev.4, Jun. 1999, page 16 of 66