The Speech Compression Specialists
Digital Voice Systems, Inc.
234 Littleton Road Tel: (978) 392-0002 email: info@dvsinc.com
Westford, MA 01886 USA Fax: (978) 392-8866 www.dvsinc.com
Using DVSI’s AMBE-2000™ and AMBE-2020™ Vocoder Chips with the
Texas Instruments’ TLV320AIC10 General Purpose CODEC
The Texas Instruments’ TLV320AIC10 codec presents a simple low cost solution for use with
DVSI’s AMBE-2000™ or AMBE-2020™ vocoder chips. This application note provides
information on interfacing these components. Figure 1 shows a sample block diagram interface,
between the TLV320AIC10 codec and DVSI’s AMBE-2000™ vocoder chip.
SERIAL
DATA
VOICE_*RESET
VDD
SCLK
VDD
16.384 MHz
CODEC Configuration
*SEE DETAIL
BELOW
AMBE-2000
AVDD
U27
TLV320AIC10
13
16
17
26
3
2
1
45
34
33
40
42
46
25
7
6
5
4
15
30
14
29
24
38
23
22
21
48
47
10
11
20
27
9
8
12
19
43
*RESET
DOUT
DIN
ALTIN
AURXCP
AURXM
AURXFP
AVDD1
AVDD2
AVSS
AVSS
AVSS
AVSS
DCSI
DTXIM
DTXIP
DTXOM
DTXOP
DVDD1
DVDD2
DVSS
DVSS
FC
FILT
FLAG
FS
FSD
INM
INP
M0
M1
MCLK
M/*S
OUTM
OUTP
*PWRDWN
SCLK
VMID
U1
41
33
27
29
37
31
CODEC_TX_DATA
CODEC_TX_CLK
CODEC_RX_CLK
CODEC_RX_STRB
CODEC_TX_STRB
CODEC_RX_DATA
VDD
Figure 1: AMBE-2000™ and TLV320AIC10 sample block diagram
Configuration:
To configure the AMBE-2000™ for operation with the TLV320AIC10, set the CODEC_SEL
pins on the AMBE-2000™ vocoder chip to work with a generic 16 bit linear 8 kHz codec as
follows:
CODEC_SEL [1-0] (pins 85,84) = 00b
page 1 of 4
Interfacing AMBE-2000™ and AMBE-2020™ Vocoder Chips with TI’s TLV320AIC10 CODEC Rev 1 Oct ‘02
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