Digital Voice Systems AMBE-2000 Supplementary Manual
Using dvsi’s ambe-2000 and ambe-2020 vocoder chips with the texas instruments’ tlv320aic10 general purpose codec
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Also See for AMBE-2000:
- User manual (67 pages) ,
- Interface manual (4 pages) ,
- Specifications (2 pages)
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User Manual
Digital Voice Systems, Inc.
The Speech Compression Specialists
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.
U1
31
CODEC_RX_DATA
41
CODEC_TX_DATA
33
CODEC_TX_CLK
27
CODEC_RX_CLK
29
CODEC_RX_STRB
37
CODEC_TX_STRB
AMBE-2000
CODEC Configuration
SERIAL
DATA
*SEE DETAIL
BELOW
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
Interfacing AMBE-2000™ and AMBE-2020™ Vocoder Chips with TI's TLV320AIC10 CODEC
VDD
VDD
VOICE_*RESET
SCLK
page 1 of 4
234 Littleton Road
Tel: (978) 392-0002
Westford, MA 01886 USA
Fax: (978) 392-8866
U27
16
DOUT
17
DIN
19
SCLK
20
16.384 MHz
MCLK
21
FSD
22
FS
23
FLAG
24
FC
25
DCSI
26
ALTIN
27
M/*S
10
M0
11
M1
12
*PWRDWN
13
*RESET
email:
info@dvsinc.com
www.dvsinc.com
VDD
AVDD
3
AURXCP
2
AURXM
1
AURXFP
48
INM
47
INP
9
OUTM
8
OUTP
43
VMID
38
FILT
7
DTXIM
6
DTXIP
5
DTXOM
4
DTXOP
TLV320AIC10
Rev 1 Oct '02
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Summary of Contents for Digital Voice Systems AMBE-2000
- Page 1 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 Interfacing AMBE-2000™...
- Page 2 The control registers in the TLV320AIC10 codec must be initialized for proper operation. The recommended procedure is to initialize the TLV320AIC10 by writing data to its 4 control registers through the DCSI port, while the AMBE-2000™ is held in reset. The timing for the DCSI port is shown in Figure 2.
- Page 3 TLV320AIC10 EVM User’s Guide: http://www-s.ti.com/sc/psheets/slwu003d/slwu003d.pdf Application Report – Understanding Data Converters: http://www-s.ti.com/sc/psheets/slaa013/slaa013.pdf Interfacing AMBE-2000™ and AMBE-2020™ Vocoder Chips with TI’s TLV320AIC10 CODEC (D7-D0) D4=1: select AUXP AND AUXM for ADC 0x11 (Handset) D5=0: enable antialiasing filter D0=1: select 16 BIT data Format for DAC...
- Page 4 TLV320AIC10 Reference Schematic (Analog Section) 820pF 3.3VA 10uF 200pF Handset 0.1uF Interfacing AMBE-2000™ and AMBE-2020™ Vocoder Chips with TI’s TLV320AIC10 CODEC 3.3VA AD8544 100K 100K 2 nF AURXM 220K AURXFP 5.6K 10uF VMID AURXCP 4.7K 10uF 10uF page 4 of 4...
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