RCV56HCF PCI/CardBus Modem Designer’s Guide
Speakerphone Mode (ISDN and SP Models)
The speakerphone mode features an advanced proprietary speakerphone algorithm which supports 
The speakerphone mode provides 
Synchronous Access Mode (SAM)
V.80 and Rockwell Video Ready synchronous access modes between the modem and the host/DTE are provided for host- controlled communication protocols, e.g., H.324 video conferencing applications.
1.3.3 Host-Controlled  Modem Software
Binary executable modem software is provided for the OEM.
1.3.4 Downloadable Modem Data Pump Firmware
Binary executable code controlling MDP operation is downloaded as required during operation.
1.3.5 Hardware Interfaces
1.3.5.1 PCI Bus Host Interface
The Bus Interface conforms to the PCI Local Bus Specification, Production Version, Revision 2.1, June 1, 1995. It is a memory slave (burst transactions) and a bus master for PC host memory accesses (burst transactions). Configuration is by PCI configuration protocol.
The following interface signals are supported:
∙Address and data
−32 bidirectional Address/Data 
−Four Bus Command and Byte Enable (CBE [3:0]), bidirectional
−Bidirectional Parity (PAR); bidirectional
∙Interface control
−Cycle Frame (FRAME#); bidirectional
−Initiator Ready (IRDY#); bidirectional
−Target Ready (TRDY#); bidirectional
−Stop (STOP#); bidirectional
−Initialization Device Select (IDSEL); input
−Device Select (DEVSEL#); bidirectional
∙Arbitration
−Request (REQ#); output
−Grant (GRANT#); input
∙Error reporting
−Parity Error ((PERR#); bidirectional
−System Error ; bidirectional
∙Interrupt
−Interrupt A (INTA#); output
∙System
−Clock (PCICLK); input
−Reset (PCIRST#); input
−Clock Running (CLKRUN#); input
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