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参数资料
| 型号： | LC7232N-8819 |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP80 |
| 封装： | QFP-80 |
| 文件页数： | 21/23页 |
| 文件大小： | 219K |
| 代理商： | LC7232N-8819 |
Pin Functions
No. 4643-7/23
LC7232N-8819
Pin
Symbol
I/O
Allocation
Active
Function
Initial value
Handling when unused
1
XIN
I
XIN
—
Connection for the 4.5 MHz crystal
—
Must be used.
2
TEST2
I
TEST2
—
Connect to GND
—
Must be used.
3
PG3
I
REMO
L
Remote control input pin; REMO and INT are connected together.
—
Connect directly to VDD.
4
PG2
I
STEREO
L
In FM mode with stereo selected by the MO/ST key,
—
Connect directly to VDD.
when this pin goes low the ST indicator will be lit.
5
PG1
I
K5
—
Diode matrix inputs
—
Must be used.
6
PG0
I
K4
—
Must be used.
7
PH3
O
MO/ST
H
Mono = low, stereo = high
L
Open
8
PH2
O
FM/AM
—
Tuner band switching output
H
Open
9
PH1
O
MW
—
See the Band Switching Output Table for details.
H
Open
10
PH0
O
LW/SW1
—
H
Open
11
PF3
O
SW2/A/B
—
L
Open
12
PF2
I
FUNC1
—
Switches the function according to the input state.
L
Connect to GND.
13
PF1
I
FUNC0
—
(Connect these pins to GND when SELFUN = 1.)
L
Connect to GND.
14
PF0
O
VUP
H
For use with the motorized volume control.
L
Open
Outputs a high level while the V-UP key is pressed.
15
PE3
O
VDN
H
For use with the motorized volume control.
L
Open
Outputs a high level while the V-DN key is pressed.
16
PE2
O
CE
H
For control of the electronic volume IC and the source selector IC.
L
Open
17
PE1
O
DO
H
L
Open
18
PE0
O
CLK
H
L
Open
19
PD3
O
BASS
H
For use with super bass control. The bass indicator will be on
L
Open
when this signal is high, and off when low.
20
PD2
O
T-ON
H
After a power on due to the timer, waits one second and then
L
Open
outputs a high level for 500 ms. (For use by on timer auto-play.)
21
PD1
O
MUTE
H
Audio mute (audio signal cutoff)
L
Open
Used for both mute output due to the mute key as well as IF
counter output.
22
PD0
O
POWOUT
H
Power control
L
Open
Power on = high, power off = low
23
PC3
O
T7
H
Scans only when a key is pressed. Holds a high level when the
H
Open
scan is stopped. (The chattering exclusion time is 40 ms.)
24
PC2
O
T6
H
Scans only when a key is pressed. Holds a high level when the
H
Open
scan is stopped. (The chattering exclusion time is 40 ms.)
25
PC1
O
T5
H
Scans only when a key is pressed. Holds a high level when the
H
Open
scan is stopped. (The chattering exclusion time is 40 ms.)
26
PC0
O
T4
H
Scans only when a key is pressed. Holds a high level when the
H
Open
scan is stopped. (The chattering exclusion time is 40 ms.)
27
PB3
O
T3
H
Scans only when a key is pressed. Holds a high level when the
H
Open
scan is stopped. (The chattering exclusion time is 40 ms.)
28
PB2
O
T2
H
Scans only when a key is pressed. Holds a high level when the
H
Open
scan is stopped. (The chattering exclusion time is 40 ms.)
29
PB1
O
T1
H
Scans only when a key is pressed. Holds a high level when the
H
Open
scan is stopped. (The chattering exclusion time is 40 ms.)
30
PB0
O
T0
H
Scans only when a key is pressed. Holds a high level when the
H
Open
scan is stopped. (The chattering exclusion time is 40 ms.)
Continued on next page.
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