peb20320 Infineon Technologies Corporation, peb20320 Datasheet - Page 167

• Manufacturer Part Number: peb20320
• Description: Multichannel Network Interface Controller For Hdlc
• Manufacturer: Infineon Technologies Corporation

Next Transmit
Descriptor Pointer:
User’s Manual
This 32-bit pointer contains the start address of the next transmit
descriptor. After sending the indicated number of data bytes,
MUNICH32 branches to the next transmit descriptor to continue
transmission. The transmit descriptor is read entirely at the
beginning of transmission and stored in an on-chip memory.
Therefore all information in the next descriptor must be valid
when MUNICH32 branches to this descriptor when HOLD = 0.
For HOLD = 1 the next transmit descriptor pointer is polled
together with HOLD; the next transmit descriptor must be valid,
when HOLD = 0 is polled.
This pointer is not used if a transmit jump, fast transmit abort or
transmit initialization channel command is detected while the
MUNICH32 still reads data from the current transmit descriptor
or polls the HOLD bit. In this case FTDA is used as a pointer for
the next transmit descriptor to be branched to.
167
Detailed Register Description
PEB 20320
01.2000