HFC-4S Cologne Chip AG, HFC-4S Datasheet - Page 44

• 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
The HFC-4S / 8S has an integrated universal external bus interface which can be configured as PCI,
ISA PnP, PCMCIA, microprocessor interface and SPI. Table 2.2 shows how to select the bus mode
via the two pins MODE0 and MODE1.
The external bus interface supports 8 bit, 16 bit and 32 bit accesses. The available access types depend
on the selected bus mode like shown in Table 2.2.
The sections 2.2 to 2.6 explain how to use the HFC-4S / 8S in the different bus modes.
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Bus mode
PCI
PCI memory mapped mode
PCI I/O mapped mode
ISA Plug and Play
PCMCIA
Processor Interface
Mode 2: Motorola
Mode 3: Intel, non-multiplexed
Mode 4: Intel, multiplexed
SPI
( : SPI mode is selected by using processor interface mode and connecting pin 200 to SPI clock.)
Universal external bus interface
MODE1
Table 2.2: Access types
0
1
1
0
0
Data Sheet
MODE0
0
0
1
1
1
8 bit
✓
✓
✓
✓
✓
✓
✓
✓
16 bit
✓
✓
✓
✓
✓
✓
✓
✗
March 2003 (rev. A)
32 bit
✓
✓
✓
✗
✗
✗
✗
✗
Cologne
Chip
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