AMBE-1000 Digital Voice Systems, Inc., AMBE-1000 Datasheet - Page 40

• Manufacturer Part Number: AMBE-1000
• Manufacturer: Digital Voice Systems, Inc.

4.1.14.4
0x13EC
Header
Unused
Bit 15
0
The AMBE-1000 is not recommended for new designs.
0x03
Unused
ID
Please refer to the AMBE-2000/2020 product line.
14
0
Control_0 Control_1 Control_2 Control_3
Framed Input : ID = 0x03 : A/D-D/A, VAD, Echo Canceller, Unframed Sync
Configuration
There are two primary methods for the configuration of the A/D-D/A interface, one in
hardware one in software. The Command frame with ID=0x03 gives the user the most
control of the A/D-D/A interface as it gives the user direct access to the Serial I/O
register (SIOC) within the AMBE-1000™. In many applications this command interface
will not be necessary given that a number of standard configurations are supported
through the C_SEL[2-0] hardware interface. This Command frame also controls other
functions within the AMBE-1000™ such as the VAD enable, echo canceller enable,
codec type, and unframed sync.
In order to use the ID=0x03 command frame to alter the A/D-D/A interface or the VAD
or Echo Canceller functions, the AMBE-1000™ Vocoder Chip must be placed into
Standard Sleep Mode first.
Standard Sleep Mode upon power up or reset by enabling the SLEEP_EN (pin 93,
active HIGH) OR by sending the Standard Sleep Mode Command Frame (see
section 4.1.14.5). Once the vocoder is in Standard Sleep mode, the Command Frame
with ID=0x03 can be sent. A Wake-up Command Frame (ID = 0xFE) must be sent
in order to place the AMBE-1000™ Vocoder Chip back into normal operating mode.
Although frequently only one or two of the functions require changes, if any one of the
fields within this control frame are changed, then all the other fields must be populated
with appropriate values as well. When it is desired that the hardware setting of the
A/D-D/A remain the same refer to Table 5-A to find the appropriate values. The SIOC
Value, Codec Type and Configuration Words must all be repeated in the A/D-D/A
Command frame.
Table 4-M A/D-D/A, VAD, Echo Canceller Configuration Frame Format
0x00
If none of the pin configurations selectable using the C_SEL[2-0] pins shown in Table
5-A are adequate for the A/D-D/A interface then a custom pin configuration can be
made using the SOIC control register which is accessible through the Control_1 word
(with ID=0x03).
Table 4-N ID = 0x03, Control_1 (SIOC Control Register) Field Format
Unused
13
0
Table
4-N
Unused
12
0
The AMBE-1000 is not recommended for new designs.
Table
4-P
Please refer to the AMBE-2000/2020 product line.
Unused
11
0
1-Data
Words
Unused
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10
0xXXXX 0xXXXX 0xXXXX 0xXXXX 0xXXXX 0xXXXX 0xXXXX 0xXXXX 0xXXXX 0xXXXX 0xXXXX 0xXXXX
0
Control_1 (SOIC Control Register)
LD
9
page 40
The AMBE-1000™ Vocoder Chip can be placed into
Optional Configuration Data, number of words based on 1 – Control_3
8
CLK
7
MSB
6
OLD
5
ILD
4
OCK
3
ICK
2
OLEN
1
ILEN
0