PSB7238 SIEMENS [Siemens Semiconductor Group], PSB7238 Datasheet - Page 50

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

PSB 7238
Functional Blocks
Figure 20
Timing Generation on SAI Lines - Continuous and Burst Mode
The uses of these modes are as follows:
Case 1
When the timing is input, or when it is internally generated with TCONT = 1, the interface
can be used as a general time-division multiplex highway with time-slots of
programmable lengths and locations for audio and data.
Case 2
When the timing is output with TCONT = 0, the interface is typically used to transfer
messages or blocks of compressed or uncompressed audio or data, preceded by a
header of control information pertaining to the transferred data block and synchronous
to it. The blocks can be received and transmitted using one of the HDLC controllers in
the transparent mode. An application of this mode of operation is the synchronous
transfer of H.221/223 oriented data between the PSB 7238 and an attached VCP
videocodec - see corresponding application note: “The PSB 7238 in Videophone
Application with the VCP”).
Semiconductor Group
50
Data Sheet 1998-07-01