HFC-S+ Cologne Chip AG, HFC-S+ Datasheet - Page 6

• Manufacturer Part Number: HFC-S+
• Description: Isdn S/t HDLC Basic Rate Controller
• Manufacturer: Cologne Chip AG

863 C
Features


















1
The HFC-S+ is an ISDN S/T HDLC basic rate controller for so called „passive“ ISDN PC cards with
integrated S/T interface and PCM30 highway interface. It only needs an external SRAM to form a high
performance ISDN PC card. Most problems with passive ISDN PC cards as small FIFOs and massive
interrupt load for the host CPU are overcome by the HFC-S+. So we call ISDN cards with the HFC-S+
„semi-active“.
Additionally the HFC-S+ can be used as a microprocessor peripheral in non-PC applications.
The ultra-deep FIFOs of the HFC-S+ are realized with an external SRAM. Also an industrial standard
serial interface for telecom peripheral ICs is implemented. Codecs are normally connected to this
interface.
& _V '
One chip ISDN-S-controller with B- and D-channel HDLC support
Independent Read and Write HDLC-Channels for 2 ISDN B-channels and one ISDN D-channel
B1- and B2-channel transparent mode independently selectable
FIFO-size: 4x 7.5 KByte (B-channel) and 2x 512 Byte (D-channel)
max. 31 HDLC frames (B-channel) and 15 HDLC frames (D-channel) per channel and direction
in FIFO
56 kbit/s restricted mode for U.S. ISDN lines selectable by software
full I.430 ITU S/T ISDN support in TE and NT mode for the 3.3V and 5V supply
B1+B2 HDLC mode
PCM30 interface configurable to interface MITEL ST
GCI
direct 8 bit ISA-PC bus interface with buffers for ISA-databus
One of 6 interrupt channels on ISA-PC bus selectable by software
ISA-I/O-address selectable by software
only 2 I/O addresses used on ISA-PC bus
microprocessor interface compatible to Motorala bus and Siemens/Intel bus
simple DMA access to PCM30 interface for tone synthetisation
Timer with interrupt and watchdog capability in processor mode
3.3V and 5V supply voltage
rectangular QFP 100 case
General description
TM
for interface to U-chip or external codecs
TM
bus (MVIP
TM
), Siemens IOM2
:Q^eQbi " !
Cologne
Chip
TM
or