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RCV56HCF PCI/CardBus Modem Designer’s Guide
ROCKWELL PROPRIETARY INFORMATION
1129
3-8
Table 3-2. Bus Interface Pin Signal Definitions (Cont’d)
Label I/O Type Signal Name/Description
PCI BUS INTERFACE (CONTINUED)
PERR# I/Opsts
(s/t/s)
Parity Error.
PERR# is used for the reporting of data parity errors.
SERR# Ood
(o/d)
System Error.
SERR# is an open drain output asserted to report address parity errors, data parity errors on
the Special Cycle command, or any other system error where the result will be catastrophic.
INTA# Ood
(o/d)
Interrupt A.
INTA# is an open drain output asserted to request an interrupt.
SERIAL EEPROM INTERFACE (NMC93C56 OR EQUIVALENT)
SROMCLK Ot2
Serial ROM Shift Clock.
Connect to SROM SK input.
SROMCS Ot2
Serial ROM Chip Select.
Connect to SROM CS input.
SROMIN It
Serial ROM Instruction, Address, and Data In.
Connect to SROM DO output.
SROMOUT Ot2
Serial ROM Device Status and Data Out.
Connect to SROM DI input.
DAA INTERFACE
OH_L1# Ot12
Off-Hook Relay Control.
Output (typically active low) used to control the normally open off-hook relay. The
polarity of this output is configurable.
CID_L1# Ot12
Caller ID Relay Control.
Output (typically active low) used to control the normally open Caller ID relay. The
polarity of this output is configurable.
VOICE# Ot12
Voice Relay Control.
Output (typically active low) used to control the normally open. The polarity of this
output is configurable.
MUTE_L1# Ot12
Mute Relay Control.
Output (typically active low) used to control the normally open mute relay. The polarity
of this output is configurable.
IRING_L1# It
Ring Indicate.
A high-going edge used to initiate presence of a ring frequency. Typically connected to the
output of an optoisolator or equivalent. The idle state (no ringing) output of the ring detect circuit should be
low.
LCS_L1# It
Line Current Sense.
Active low input used to indicate handset off-hook status.
RH_L1# It
Remote Hangup.
Active low input used to indicate hangup of the remote modem or telephone, i.e. the
remote modem/telephone has released the line (gone on-hook).
USED_L1 Ot12
Extension Offhook.
Active high input used to indicate the telephone line is in use by the local handset or an
extension phone.
LCS_H1# It
Line Current Sense Handset 1.
Active low input used to indicate off-hook status from handset 1.
ORING_H1 Ot12
Ring Output Handset 1.
Active high output used to indicate ring signal to handset 1.
LCS_H2# It
Line Current Sense Handset 2.
Active low input used to indicate off-hook status from handset 2.
ORING_H2 Ot12
Ring Output Handset 2.
Active high output used to indicate ring signal to handset 2.
I/O0-I/O4 It/Ot12
Reserved.