PSB7238 SIEMENS [Siemens Semiconductor Group], PSB7238 Datasheet - Page 153

• Manufacturer Part Number: PSB7238
• Description: Joint Audio Decoder-Encoder - Multimode
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

6.2.1.4
Like stated before, there is a delay of three times the frame length (default: 30 ms)
between the transfer of a new control block from the host to the JADE and the new
settings being reported in the status data (transferred from the JADE to the host) due to
the internal buffering pipeline of the JADE. This pipeline is independent of the chosen
compressed audio protocol (inband or outband). Therefore this chapter is applicable to
Chapter 6.2.1.2 and Chapter 6.2.1.3. In case G.723 is used it is recommended to use
the inband protocol due to the fact that packet numbering information is needed on a
10 ms basis. The packet numbering information is included in the inband protocol
header, thus there is no need to request additional status information from the JADE
(see Chapter 6.2.1.1).
Table 19 shows the pipeline behaviour switching from neutral to G.711 and vice versa.
Note: The encoder data is input through the uncompressed interface and output through
:
Table 19
Packet#
(10 ms)
1.
2.
3.
4.
5.
6.
7.
8.
Semiconductor Group
the compressed interface. The decoder data is input through the compressed
interface and output through the uncompressed interface. The “#Data Bytes” (see
table below) transferred together with the control/status information refers only to
the compressed interface!
MODE OPT1* #Data
00
22
22
22
22
22
00
00
Control Pipeline
Control/Status Pipeline for G.711 (identical for Pass-Through)
(User to JADE)
Control
00
00
00
00
00
00
00
00
Bytes
80
80
80
80
80
0
0
0
MODE OPT1 #Data
00
00
22
22
22
22
00
00
(JADE to User)
153
Status
00
00
00
00
00
00
00
00
Bytes
0
0
0
0
80
80
80
80
Comment
Neutral status after Reset
Command: G.711 A-law
encode & decode
First G.711 A-law encoded
data to JADE
–
First G.711 A-law
en-/decoded data from
JADE
–
Command: Neutral Mode
(at least 4 times), last G.711
data to JADE
–
Data Sheet 1998-07-01
Firmware Features
PSB 7238