HFC-U Cologne Chip AG, HFC-U Datasheet - Page 3

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

HFC-U
Figures
Figure 1: HFC-U block diagram........................................................................................................................... 5
Figure 2: Pin Connection......................................................................................................................................7
Figure 3: FIFO Organisation (shown for B-channel, similar for D-channel) .................................................... 20
Figure 4: FIFO Data Organisation..................................................................................................................... 22
Figure 5: Timing relations and delayed BUSY....................................................................................................26
Figure 6: Function of IOCHRDY ........................................................................................................................ 27
Figure 7: Single channel GCI format.................................................................................................................. 41
Figure 8: HFC-U package dimensions................................................................................................................ 42
Tables
Table 1: Selected I/O address after reset ............................................................................................................ 13
Table 2: SRAM size and FIFO depth................................................................................................................... 25
Timing Diagrams
Timing Diagram 1: ISA-PC bus or processor access.......................................................................................... 37
Timing Diagram 2: SRAM access ....................................................................................................................... 38
Timing Diagram 3: GCI/IOM timing .................................................................................................................. 39
March 1997
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