TEA1098 Philips Semiconductors, TEA1098 Datasheet - Page 4

• Manufacturer Part Number: TEA1098
• Description: Speech and handsfree IC
• Manufacturer: Philips Semiconductors

Philips Semiconductors
BLOCK DIAGRAM
1999 Oct 14
Speech and handsfree IC
Pin numbers in parenthesis apply to the TEA1098H. Pin numbers not in parenthesis apply to the TEA1098TV.
RECO
GARX
DTMF
RENV
RSEN
TSEN
TENV
GALS
LSAO
HFTX
RNOI
MIC
MIC
TNOI
AGC
GND
TXIN
DLC
QR
LN 18 (15)
21 (18)
16 (13)
39 (36)
35 (32)
34 (31)
33 (30)
31 (28)
8 (4)
7 (3)
6 (2)
9 (5)
11 (7)
10 (6)
14 (11)
15 (12)
12 (8)
38 (35)
37 (34)
36 (33)
LINE CURRENT DETECTION
LOW VOLTAGE BEHAVIOUR
Tail currents for preamps
DYNAMIC
ATTENUATOR
ENVELOPE AND NOISE
LIMITER
STARTER
AGC
DETECTORS
TX AND RX
19
(16)
REG
COMPARATORS
Fig.1 Block diagram.
BUFFERS
17
(14)
SLPE
R1
AND
4
SWITCH
TEA1098
SWT STATUS
DUCO LOGIC
CURRENT SOURCES
POWER-DOWN
ATTENUATOR
DECODING
MANAGEMENT
INPUTS
LOGIC
SUPPLY
SWITCH
VOICE
CONTROL
VOLUME
Product specification
(10) 13
(19) 22
(20) 23
(37) 40
(27) 30
(26) 29
(29) 32
(24) 27
(25) 28
(21) 24
(22) 25
(23) 26
(17) 20
(38) 1
(39) 2
MGL317
(1) 5
TEA1098
V BB
V DD
MICS
PD
HFC
MUTE
GATX
GNDTX
SWT
IDT
SWR
VOL
HFRX
IR
TXOUT
STAB