PSB7238 SIEMENS [Siemens Semiconductor Group], PSB7238 Datasheet - Page 148
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PSB7238
Manufacturer Part Number
PSB7238
Description
Joint Audio Decoder-Encoder - Multimode
Manufacturer
SIEMENS [Siemens Semiconductor Group]
Datasheet
1.PSB7238.pdf
(190 pages)
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Semiconductor Group
Commands
The following section defines the commands which are sent from the user to the JADE.
Any changes in mode affects the input pipeline stage in the next 10 ms time-slot.
1. Command header word:
2. Checksum:
The sum of the six following words (regarded as signed 16-bit values) in the command
header. If the checksum is wrong, no modes or options are changed, and an error status
is sent back in the next status header.
3. Set Mode:
Audio modes for encoder (EM0:3) and decoder (DM0:3). The following modes are
defined:
RESET
0
1
2
3
4
5
6
4. Set Options:
x
0
I
x
0
x
x
0
x
x
P1
x
0
Special full word definition of the command mode. Reset is
defined as 0xFFFF and returns the JADE to its power on default
state.
Neutral mode, only command and status header information is
exchanged.
Pass-through 16-bit linear 8 kHz or 16-kHz sampled data
G.711 8-kHz sample rate A-law encoding/decoding
G.711 8-kHz sample rate -law encoding/decoding
G.722 16-kHz sample rate (wideband) sub-band ADPCM
encoding/decoding
G.728 8-kHz sample rate low delay code excited linear predictive
coding (LD-CELP)
G.723 8-kHz sample rate MP-MLQ (6.3 Kbit/s) or ACELP
(5.3 Kbit/s) coding
x
P0
1
x
L2
0
x
L1
EM3 EM2 EM1 EM0 DM3 DM2 DM1 DM0
0
L0
0
148
0
x
0
S
Re1 Re0 Rd1 Rd0
0
0
Data Sheet 1998-07-01
Firmware Features
1
1
PSB 7238
1
e
1
d
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