HA12216F Datasheet, PDF (9/53 Pages) Hitachi Semiconductor – Audio Signal Processor for Car Deck(Decode only Dolby B type NR with PB Amp.)

HA12216F/HA12221F Series
Operating Mode Control
HA12216F/HA12221F series provides fully electronic switching circuits. And each operating mode control are
controlled by parallel data (DC voltage).
When a power supply of this IC is cut off, for a voltage, in addition to a mode control terminal even though as do not
destruct it, in series for resistance.
Table 2 Threshold Voltage (V_TH)
Pin No.
10, 11*, 12, 13, 14
Lo
–0.2 to 1.0
Hi
3.5 to V_CC
Unit
V
Test Condition
Input Pin Measure
V
Note: * Non connection regarding HA12221F series.
Table 3 Switching Truth Table
Pin No.
Lo
Hi
10
TAPE
RADIO
11*
NR OFF
NR ON
12
120 µ (Normal)
70 µ (Metal or Chrome)
13
FORWARD
REVERSE
14
SER (FF or REV)
REP (Normal Speed)
Notes: * Non connection regarding HA12221F series.
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: V_CC, Low: –0.2 V)
3. Reducing pop noise is so much better for 10 kΩ to 22 kΩ resisitor and 1 µF to 22 µF capacitor shown figure 2.
Input Pin _{10 to 22kΩ}
+ _{1 to 22µF}
MPU
Figure 2 Interface for Reduction of Pop Noise
Rev.6.00 Jun 15, 2005 page 9 of 52