PSB7238 SIEMENS [Siemens Semiconductor Group], PSB7238 Datasheet - Page 36

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

Semiconductor Group
Table 9
DSP
Address
3041
3040
The functions of these registers are described below.
Indirect Access to Configuration and Control Registers
Writing of hardwired registers (configuration and control registers) in the DSP memory
(from 2000
For the last case two directly accessible locations are provided in the DSP/host com area
(host addresses 40
command (read/write) and a 6-bit address offset will cause the DSP to read or write a
configuration/control register in address space 2000
(host address 41
Table 10
DSP
Address
3041
3040
The procedure is described in Table 11.
H
H
H
H
H
DSP Write
(always
16 bit Wide)
Reg Data
DSP
RDY(LSBit)
DSP Write
(always
16 bit Wide)
Reg Data
DSP
RDY(LSBit)
to 203F
Address Mapping of DSP/Host Com Area (Multiplexed Mode) (cont’d)
H
) contains the data read/written from/to the requested location.
Host
Host
H
H
) can be effected through the parallel host interface.
and 41
DSP Read
(always
16 Bit Wide)
Reg Data
Host
Conf/Cont
Reg Address
DSP Read
(always
16 bit Wide)
Reg Data
Host
Conf/Cont
Reg Address
H
). A write operation in the first of these registers with a
DSP
DSP
36
Host
Address
AD0-7
41
40
Host
Address
AD0-7
41
40
H
H
H
H
Interfaces and Memory Organization
H
- 203F
Host Write
(always 8 bit
Wide)
Reg Data
Host
Conf/Cont
Reg Address
Host Write
(always 8 bit
Wide)
Reg Data
Host
Conf/Cont
Reg Address
H
. The second location
DSP
DSP
Data Sheet 1998-07-01
Host Read
(always 8 bit
Wide)
Reg Data
DSP
RDY(LSBit)
Host Read
(always 8 bit
Wide)
Reg Data
DSP
RDY(LSBit)
PSB 7238
Host
Host