TC9455N Toshiba Semiconductor, TC9455N Datasheet - Page 3

• Manufacturer Part Number: TC9455N
• Description: (TC9455 / TC9488) TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
• Manufacturer: Toshiba Semiconductor

Pin Description
Note 1: With the TC9455F and TC9488F, pins 4, 8, 12, 19, 24, and 27 are not connected (NC pins).
TC9455N
TC9488N
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
1
2
3
4
5
6
7
8
9
Pin Number
NC pins are normally open.
TC9455F
TC9488F
10
11
13
14
15
16
17
18
20
21
22
23
25
26
28
29
30
1
2
3
5
6
7
9
(Note 1)
VOL3 (SDA)
VOL2 (SCL)
VOL1 ( CS )
POOUT
DAOUT
Symbol
VOLST
OSCR
CSCC
MC1N
MC1P
MC2P
MC2N
TEST
ALC1
ALC2
V
MCO
PRIN
ADIN
VRO
VDA
V
VSA
V
REF
DD
SS
I/O
―
―
―
―
―
―
O
O
O
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Digital supply voltage pin
Capacitor connecting pin for CR oscillator (C = 68 pF)
Resistor connecting pin for CR oscillator (R = 5.6 kΩ)
When VOLST = “H” level, CS signal input pin
When VOLST = “L” level, DC control pin for MIC1 volume
When VOLST = “H” level, clock input pin
When VOLST = “L” level, DC control pin for MIC2 volume
When VOLST = “H” level, data input pin
When VOLST = “L” level, DC control pin for echo volume
Reference voltage pin
Reference voltage pin (1/2 V
Analog supply voltage pin
Auto level control pin 1
MIC1 feedback signal input pin
MIC1 signal input pin
MIC2 signal input pin
MIC2 feedback signal input pin
Auto level control pin 2
Analog ground pin
MIC addition signal output pin
Pre-filter input pin
Pre-filter output signal or DC input pin
Post-filter output pin
Electronic volume control mode select pin
When VOLST = “H” level, serial control (I
When VOLST = “L” level, DC level control
Test pin. Fix to “H” level for normal use
Microphone echo signal output pin
Digital ground pin
3
DD
Function
)
2
C bus/three-lead)
TC9455,88F/N
Open drain output
Open drain output
2002-02-05
Remarks