PSB7238 SIEMENS [Siemens Semiconductor Group], PSB7238 Datasheet - Page 40
![no-image](/images/no-image-200.jpg)
PSB7238
Manufacturer Part Number
PSB7238
Description
Joint Audio Decoder-Encoder - Multimode
Manufacturer
SIEMENS [Siemens Semiconductor Group]
Datasheet
1.PSB7238.pdf
(190 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PSB7238-SFV1.1
Manufacturer:
RENESAS
Quantity:
18
Company:
Part Number:
PSB7238F
Manufacturer:
INFINEON
Quantity:
96
Company:
Part Number:
PSB7238FV1.1/V1.2
Manufacturer:
SIEMENS
Quantity:
5 510
Company:
Part Number:
PSB7238FV1.1/V1.2
Manufacturer:
TOS
Quantity:
5 510
Part Number:
PSB7238SFV1.1
Manufacturer:
SIEMENS/西门子
Quantity:
20 000
- Current page: 40 of 190
- Download datasheet (3Mb)
PSB 7238
Interfaces and Memory Organization
3.3.2.2
Mailbox
The mailbox is implemented as physically two separate 256-byte memory blocks. Only
least significant bytes are used. One is read-only by the DSP and write-only by the host,
the other is write-only by the DSP and read-only by the host.
Figure 14
Since the two memories are totally independent, data transfer from host to DSP can take
place simultaneously with data transfer from DSP to host (full duplex operation).
The mailbox is seen from the host as an I/O device. Thus, to read or write a byte in the
mailbox, the host accesses a single location (separate for read and for write mailbox).
The address is given by an address register directly programmable by the host. This
address is autoincremented every time an access by the host to the mailbox I/O address
is performed. Thus, for sequential, fast access, the mailbox is seen as a 256-byte, full
duplex FIFO. For random accesses to the mailbox the host has to reprogram the address
register(s). This is summarized in Figure 15.
Figure 15
Semiconductor Group
40
Data Sheet 1998-07-01
Related parts for PSB7238
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![S80C32-12](/images/manufacturer_photos/0/6/607/siemens_semiconductor_group_tmb.jpg)
Part Number:
Description:
Intel 80C32 - Siemens SAB-C501, Nearest Equivalent Replacement
Manufacturer:
Siemens Semiconductor Group
![BAT14-033](/images/no-image3.png)
Part Number:
Description:
HiRel Silicon Schottky Diode (HiRel Discrete and Microwave Semiconductor Medium barrier diodes for detector and mixer applications)
Manufacturer:
SIEMENS [Siemens Semiconductor Group]
Datasheet:
![BXY43-P1](/images/no-image3.png)
Part Number:
Description:
HiRel Silicon PIN Diode (HiRel Discrete and Microwave Semiconductor Current controlled RF resistor for RF attenuators and switches)
Manufacturer:
SIEMENS [Siemens Semiconductor Group]
Datasheet:
![BXY44-T1](/images/no-image3.png)
Part Number:
Description:
HiRel Silicon PIN Diode (HiRel Discrete and Microwave Semiconductor Current controlled RF resistor for RF attenuators and switches)
Manufacturer:
SIEMENS [Siemens Semiconductor Group]
Datasheet:
![IRL80](/images/no-image3.png)
Part Number:
Description:
GaAs-Infrarot-Sendediode GaAs Infrared Emitter
Manufacturer:
SIEMENS [Siemens Semiconductor Group]
Datasheet:
![IRL81](/images/no-image3.png)
Part Number:
Description:
GaAlAs-Infrarot-Sendediode GaAlAs Infrared Emitter
Manufacturer:
SIEMENS [Siemens Semiconductor Group]
Datasheet:
![BSM50GB100D](/images/manufacturer_photos/0/6/607/siemens_semiconductor_group_tmb.jpg)
Part Number:
Description:
IGBT MODULE
Manufacturer:
Siemens Semiconductor Group
Datasheet:
![BSM181R](/images/manufacturer_photos/0/6/607/siemens_semiconductor_group_tmb.jpg)
Part Number:
Description:
SIMOPAC Module (Power module Single switch N channel Enhancement mode)
Manufacturer:
Siemens Semiconductor Group
Datasheet:
![BSM254F](/images/manufacturer_photos/0/6/607/siemens_semiconductor_group_tmb.jpg)
Part Number:
Description:
(BSMxxx) TRANSISTOR
Manufacturer:
Siemens Semiconductor Group
Datasheet:
![BSM111AR](/images/manufacturer_photos/0/6/607/siemens_semiconductor_group_tmb.jpg)
Part Number:
Description:
SIMOPAC Module (Power module Single switch N channel Enhancement mode)
Manufacturer:
Siemens Semiconductor Group
Datasheet:
![BUZ48](/images/manufacturer_photos/0/6/607/siemens_semiconductor_group_tmb.jpg)
Part Number:
Description:
main ratings
Manufacturer:
Siemens Semiconductor Group
Datasheet:
![TDA4716C](/images/manufacturer_photos/0/6/607/siemens_semiconductor_group_tmb.jpg)
Part Number:
Description:
Manufacturer:
Siemens Semiconductor Group
Datasheet:
![DL440M](/images/manufacturer_photos/0/6/607/siemens_semiconductor_group_tmb.jpg)
Part Number:
Description:
Manufacturer:
Siemens Semiconductor Group
Datasheet:
![SDA5255](/images/manufacturer_photos/0/6/607/siemens_semiconductor_group_tmb.jpg)
Part Number:
Description:
Manufacturer:
Siemens Semiconductor Group
Datasheet: