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Details, datasheet, quote on part number:PSB2170B
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Datasheet text preview:
Product Brochure for ACE Acoustic Echo Canceller PSB 2170
08/97
The PSB 2170 Acoustic Echo Canceller (ACE) provides acoustic echo cancellation for analog and digital featurephones. The chip supports two IOM®2 compatible channels and a dedicated interface to the PSB 4851 (dual codec). It is programmed by a simple four wire serial interface. The PSB 2170 also supports a power down mode and provides anterface pins to +5 V levels.
1. Potential application
· · · · · Analog feature phones Mobile Phones in cars (handsfree operation) Video telephony PBX-Phones ISDN-Phones Future versions will include Voice Recognition and Noise Cancellation techniques. The PSB 4860 SAM features the full-band algorithm of the ACE and performs voice compression for digital answering machines as well.
t
A D + -
2. Features:
· Two Modes of acoustic echo cancellation fullband: -20 db ERLE @ 60 ms, 175 ms, 43 ms delay · Fast adaptation without learning tone · Line echo cancellation · DMTF tone generation and detection · Flexible ringing generation · Programmable side gain · Transducer correction filters · Call progress tone detector · Caller ID decoder (Bellcore and BT Sin 227, 242) · General purpose parallel port (16 bits) · Independent gain adjustable for all channels Type Ordering Code Q67223-H1005
t+e
h0
h1
FIR Filter
Adaptation (NLMS)
Control
D A + A D Filter + -
r
Filter
FIR Filter
Adaptation (NLMS)
FIR Filter
Adaptation (NLMS)
Filter D A
ITS10319
3. Packaging
Package P-MQFP-80 PSB 2170 V1.1
4. Product status
Product PSB 2170 PSB 2170 V1.0 V1.1 Step Status ES available ES 1/98 Prod 5/98 Changes --
5. Diagram (independent building blocks facilitate modular designs)
UA AFE IF ch. 1
S2
Equ 1
Equ 2 SDI channel 1
+
acoustic
S14 S12
S18
S19
S6
+
S1 S11
line
AFE IF ch. 2
S4 S15
+
S9 S3 S10 S20
DTMF Gen.
DIP_2170.DOC
+
speakerphone
S5
+
line echo canceller SDI channel 2
S8
+
TG
CPT
ATD
CID
DTMF Dec.
S7
Product Brochure for ACE
6. Documentation (Please contact our sales office for details) Date of issue/version Prel. Data Sheet V1.1 10/97 Errata Sheet V1.0 7/97 App.Note: "ACE Setup..." 8/97 7. Development and support tools Availability SAM evaluation board SIPB 4850 available 8. Applications · Analog feature phone with Full Duplex Echo Cancelling
Speech Circuit
SAM-AFE PSB 4851 ACE PSB 2170 SCI
08/97
Type of material Copy Copy Copy Ordering number Q67220-H1012
Tip/Ring
µController SAB C513
1 4 7
2 5 8 0
3 6 9
SIEMENS HL IT SIEMENS 9-89-4144
Keyboard
LCD Display
LED Matrix
· ISDN phone with Full Duplex Echo Cancelling
E x t e n s io n s I O M -2
A R C O F I- B A P SB 2161
ACE P SB 2170
S CI
µC o n t r o l l e r S AB C513
ISA C-S TE P SB 2186
S/T I n te rfa c e
1 4 7
2 5 8 0
3 6 9
S IE M E NS HL IT 9 -8 9 -4 1 4 4
P ow er C o n tro lle r P EB 2023
K e y b o a rd
L CD D is p la y
L ED M a t r ix
5V
· Car Kit for GSM mobil sets featuring Full Duplex Echo Cancelling
AC E PSB 2170
SCI
µController C511
SA M-A FE PSB 4851
Car Kit
Analog Audio Interface
DIP_2170.DOC
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