PSB7238 SIEMENS [Siemens Semiconductor Group], PSB7238 Datasheet - Page 30

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

Semiconductor Group
Figure 9
This area is in turn divided into four blocks of 64 bytes each according to their functions.
Not all the addresses in each of these 64-byte areas are used. An overview of the
functions of these 64-byte areas is given in Figure 10, please refer also to the
appropriate chapters for a detailed description.
1. Locations for reading and writing samples “in real time” from/to the serial interfaces
2. Area for communication between the host and the embedded DSP, for programming
3. Register bank for HDLC Controller 1 - accessed by host if HHA1 (configuration bit) is
4. Register bank for HDLC Controller 2 - accessed by host if HHA2 (configuration bit) is
.
Figure 10
(IOM-2 and serial audio interface) - Input/Output area (see Chapter 3.3.1)
parameters and reporting status conditions - DSP/Host Com area (see Chapter 3.3.2
and Chapter 3.3.3)
‘1’ - HDLC1
‘1’ - HDLC2
30
Interfaces and Memory Organization
Data Sheet 1998-07-01
PSB 7238