HFC-4S Cologne Chip AG, HFC-4S Datasheet - Page 20

• Manufacturer Part Number: HFC-4S
• Description: Isdn HDLC Fifo Controller With 8 (4) Integrated S/t Interfaces
• Manufacturer: Cologne Chip AG

HFC-4S
HFC-8S
1.1 System overview
The HFC-4S and HFC-8S are ISDN S/T HDLC basic rate controllers for all kinds of BRI
equipment, such as
The integrated universal bus interface of the HFC-4S / 8S can be configured to PCI, ISA
Plug and Play, PCMCIA, microprocessor interface or SPI. A PCM128 / PCM64 / PCM30
interface for CODEC or inter chip connection is also integrated. The very deep FIFOs of the
HFC-4S / 8S is realized with an internal or external SRAM.
20 of 273
(required for
PCMCIA and
ISA-PnP,
optional for PCI)
128K x 8
512K x 8
EEPROM
SRAM
high performance ISDN PC cards
ISDN multi-BRI terminal adapters
ISDN PABX for BRI
VoIP gateways
Integrated Access Devices (IAD)
ISDN LAN routers for BRI
ISDN least cost routers for BRI
ISDN test equipment for BRI
HFC - 4S
Controller
64 FIFOs
32K x 8
RAM
FIFO
for
32 for Receive:
32 for Transmit:
Controllers
HDLC / Transparent
Mode Select
for Channel
HDLC
64
TM
B, D, PCM
B, D, PCM
Universal External Bus Interface
Microprocessor Interface / SPI
FIFO
Figure 1.2: HFC-4S block diagram
Configuration Registers
Channel
Transmit/Receive
Channel
for FIFO
PCI / ISA-PnP / PCMCIA /
General description
Data Sheet
Processing
Channel
Sub-
Bit Count /
Start Bit /
Mask Bits
Connect
Conference /
DTMF and
Connect
Options
Detect
Confe-
rence
DTMF
Channel
Assigner
Timeslot
Select PCM
Timeslot
Slot
4 S/T Interfaces
Interface
Bridge
S/T
March 2003 (rev. A)
PCM128 /
PCM64 /
PCM30
Interface
Cologne
Chip
CODEC
Select
PCM128
PCM64
PCM30
MST
(IOM2)
(GCI)
8 Bit
4x S/T