PEB20534H-10 SIEMENS [Siemens Semiconductor Group], PEB20534H-10 Datasheet - Page 77
![no-image](/images/no-image-200.jpg)
PEB20534H-10
Manufacturer Part Number
PEB20534H-10
Description
DMA Supported Serial Communication Controller with 4 Channels DSCC4
Manufacturer
SIEMENS [Siemens Semiconductor Group]
Datasheet
1.PEB20534H-10.pdf
(442 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PEB20534H-10-V2.1
Manufacturer:
INF
Quantity:
5 510
Company:
Part Number:
PEB20534H-10-V2.1
Manufacturer:
PHILIPS
Quantity:
5 510
Company:
Part Number:
PEB20534H-10V2.1
Manufacturer:
MICRON
Quantity:
78
- Current page: 77 of 442
- Download datasheet (2Mb)
Receive:
• If the current receive buffer descriptor has its HOLD-bit set and the current data buffer
Semiconductor Group
transfer can be restarted by a single poll command (GCMDR:TXPOLLi=1; i=0...3) or
by setting the ’AR’ bit in the GCMDR register after the configuration register has been
updated for the corresponding channel (new channel initialization). The transmit poll
command causes the channel to read the HOLD bit (first DWORD of the descriptor)
and the next descriptor address of the current descriptor again. The DMAC branches
to the next descriptor address if HOLD bit has been reset to ’0’.
There are three methods to handle the situation in which the next descriptor address
pointer is not yet valid in the current transmit descriptor. This happens if the location
of the next descriptor is not known when preparing the last descriptor of the chain:
1.Updating the next descriptor address before providing transmit poll request
command.
2. Updating BTDA address in register CHiBTDA followed by a channel initialization
command (’IDT’).
3. Programming the "next transmit descriptor address" of each descriptor with HOLD
bit set pointing to a fixed dummy descriptor with byte number 0 (NO = 0). The next
descriptor address of the dummy descriptor can be programmed to point to a newly
prepared descriptor list before providing a transmit poll request command. The DMA
channel will continue branching to the dummy descriptor, completing it without data
transfer and branch to the next descriptor which itself might point to the dummy
descriptor again if HOLD bit is set.
has been filled, the DMA channel does not branch off to the next descriptor. An active
“HOLD” bit causes a receive FIFO overflow to occur. If more data are received, those
are discarded by the serial channel.
Furthermore an error interrupt is generated anytime a receive channel detects the
HOLD condition.
The Host CPU (software) is expected to prepare sufficient amount of receive
descriptors which is supported by several control mechanisms. Thus detecting a Hold
condition in the receive descriptor list is treated as an exceptional condition by the
corresponding DMA channel.
Once, the DSCC4 has detected the HOLD=’1’ condition in receive direction, an
interrupt is generated after completion of the current receive descriptor and the
corresponding DMA channel is deactivated for receive direction as long as the host
does not request an initalization via action request command in register GCMDR. The
data transfer can be restarted by setting the AR bit in the GCMDR register after the
channel specific configuration register has been updated (new initialization).
77
DMA Controller and Central FIFOs
Data Sheet 09.98
PEB 20534
Related parts for PEB20534H-10
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: