U4089B-MFN ATMEL [ATMEL Corporation], U4089B-MFN Datasheet - Page 2

• Manufacturer Part Number: U4089B-MFN
• Description: MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
• Manufacturer: ATMEL [ATMEL Corporation]

Figure 2. Block Diagram
2
ATAFS
TSACL
INLDR
INLDT
DTMF
TTXA
TLDR
TLDT
MIC1
MIC2
SAO
U4089B-M
SAI
26
29
28
25
21
4
3
1
27
41
11
23
MIC
suppression
Acoustical
SACL
feedback
control
GSA
ACL
TX
22
Transmit
44
control
MUTX
mute
GT
24
TXA
RECO
32
STO
39
7
GR
V
L
40
600 W
900 W
Impedance
control
20
IMPSEL
30
control
AGA IND
AGA
6
STI
36
SENSE V
9
Supply
10
attenuation
B
Current
supply
supply
RECIN
Power
R-
13
42
V
MP
31
33
8
4570A–CORD–04/03
V
GND
I
REF
M