Hayes Microcomputer Products RCV56HCF - Manual (Page 32)

RCV56HCF PCI/CardBus Modem Designer’s Guide
ROCKWELL PROPRIETARY INFORMATION 1129 3-10
Table 3-2. Bus Interface Pin Signal Definitions (Cont’d)
Label I/O Type Signal Name/Description
ISDN INTERFACE (NON-ISDN MODELS)
DA0-DA3 Ot2 Device Bus Address Lines 0-3. Connect to the MDP only
DD0-DD7 It/Ot12 Device Bus Data Line 0-7. Connect to the MDP only
DRD# Ot2 Read Enable. Connect to the MDP only
DWR# Ot2 Write Enable. Connect to the MDP only
ISDN_CS# Ot2 ISDN Chip Select. Leave open.
ISDN_INT It ISDN Interrupt Request. Connect to GND.
DRESET# Ot2 External Device Active Low Reset. Leave open.
ISDN INTERFACE (ISDN MODELS)
DA0-DA3 Ot2 Device Bus Address Lines 0-3. Connect to the ISDN interface device A0-A3 pins, respectively.
DD0-DD7 It/Ot12 Device Bus Data Line 0-7. Connect to the ISDN interface device D0-D7 pins, respectively.
DRD# Ot2 Read Enable. Connect to the ISDN interface device RD# pin.
DWR# Ot2 Write Enable. Connect to the ISDN interface device WR# pin.
ISDN_CS# Ot2 ISDN Chip Select. Connect to the ISDN interface device CS# pin.
ISDN_INT It ISDN Interrupt Request. Connect to the ISDN interface device INT# pin.
DRESET# Ot2 External Device Active Low Reset. Connect to the ISDN interface device RESET# pin.
Notes:
1. I/O types:
I/Opod Input/Output, PCI, open drain (PCI type =o/d)
I/Opsts Input/Output, PCI, sustained tristate (PCI type = s/t/s)
I/Opts Input/Output, PCI, tristate (PCI type = t/s)
Ip Input, PCI, totem pole (PCI type = in)
Ipts Input, PCI (PCI type = t/s)
It Input, TTL
It2 Input, TTL, 2 mA
Itpd Input, TTL, internal pull-down
It/Ot Input, TTL/Output, TTL
It/Ot12 Input, TTL/Output, TTL, 12 mA
Opod Output, PCI, open drain (PCI type =o/d)
Opts Output, PCI, tristate (PCI type = t/s)
Ot Output, TTL
Ot2 Output, TTL, 2 mA
Ot4 Output, TTL, 4 mA
Ot12 Output, TTL, 12 mA
2. NC = No external connection allowed (may have internal connection).
3. Interface Legend:
MDP = Modem Data Pump