HFC-U Cologne Chip AG, HFC-U Datasheet - Page 27

• Manufacturer Part Number: HFC-U
• Description: Isdn HDLC Basic Rate Controller
• Manufacturer: Cologne Chip AG

HFC-U
Busy synchronisation with IOCHRDY
3.7.2
Figure 6: Function of IOCHRDY
Note 1:
The read/write data access is finished by an external processor after release of IOCHRDY.
Repeated status read can be avoided if the IOCHRDY output of the HFC-U is connected to the
/WAIT line of the external processor. If the HFC-U is accessed during a BUSY phase the processor
waits until the end of the BUSY phase.
March 1997
27 of 43