Date: 19950720 From: Thomas Klein To: Jaap van Ganswijk Subject: Send Chip Directory Note Chip Information: HFC 2BS0 ISDN HDLC FIFO Controller (from Cologne Chip Designs) (Phone: +49 221-136735, FAX: +49 221-134715) Features of the HFC 2BS0: - Dual Read and Write HDLC-Channels for 2 ISDN B-channels - B1 and B2 transparent mode independently selectable - FIFO-depth: 4 x 7,5 KByte (32 KByte ext. SRAM) or 4 x 1,5 KByte (8 KByte ext. SRAM) - max. 31 HDLC frames per channel and direction in FIFO - 8 bit ISA-PC bus interface with direct drive capability (no 74xx245 needed) - One of 6 interrupt channels on PC-ISA bus selectable - Timer 25/50 ms with interrupt capability - Only 2 I/O-addresses programmable - direct connetable with ISACS(TM) from SIEMENS - 3-5V supply voltage - rectangular QFP 80