Hayes Microcomputer Products RCV56HCF Serial Eeprom Interface, Eeprom Configuration Data, Cis Ram

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RCV56HCF PCI/CardBus Modem Designer’s Guide

5.3 SERIAL EEPROM INTERFACE

The serial EEPROM interface is used to load PCI configuration parameters and CIS information (required for Card Bus operation) after a reset occurs. The PCI configuration information to be loaded requires 10 bytes of data. The CIS information requires 384 bytes of data. The minimum serial EEPROM size is 512 bytes (4096 bits). After the PCI reset signal is negated, the configuration data is read from the serial EEPROM and stored in the PCI configuration registers as required, then the CIS information is read from the serial EEPROM and stored in the internal RAM of the BIF. While the serial EEPROM data is being read and is being loaded in the configuration registers and the CIS RAM, any PCI access that occurs will receive a RETRY signal from the BIF device. After completion of the serial EEPROM reads, the BIF device will accept PCI transactions.

The data stored in the serial EEPROM is in 16 bit word format. The configuration data to be read from the serial EEPROM is shown in Table 5-5.

		Table 5-5. EEPROM Configuration Data
EEPROM Address		Copied to
0x0		Configuration Register Device ID

0x1		Configuration Register Vendor ID
0x2		Configuration Register Subsystem Device ID
0x3		Configuration Register Subsystem Vendor ID

0x4	(LSBs)	Configuration Register Min Grant
0x4	(MSBs)	Configuration Register Max Latency
Beyond 0x4		CIS RAM

5-4

ROCKWELL PROPRIETARY INFORMATION

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Contents RCV56HCF RCV56HCF PCI/CardBus Modem Designer’s Guide Table of Contents Command SET Rockwell Proprietary Information List of Figures List of Tables Features SummaryRCV56HCF PCI/CardBus Modem Designer’s Guide Model Number1 Modem Models and FunctionsMarketing FdspPC Software RCV56HCF Hardware Configuration Block Diagram Data Pump BUS Operating Modes Technical OverviewGeneral Description Hardware Interfaces Host-Controlled Modem SoftwareDownloadable Modem Data Pump Firmware RCV56HCF PCI/CardBus Modem Designer’s Guide Typical Audio Signal Interface U.S +VLS= Typical Signal Routing Voice ModeRelay Positions VoiceView Mode VOICE# CIDL1#This page is intentionally blank Data Mode Establishing Data Modem ConnectionsMNP 10EC Enhanced Cellular Connection Error Correction and Data CompressionVOICE/AUDIO Mode FAX Class 1 OperationVoiceview HOST-BASED Dsvd ModeFULL-DUPLEX Speakerphone Fdsp Mode Caller ID DiagnosticsLOW Power Sleep Mode World Class Country SupportHardware Signal Pins and Definitions Hardware InterfaceRCV56HCF MDP BUS InterfaceTqfp 11229 PIN Tqfp R6776Bus Interface 176-Pin Tqfp Hardware Interface Signals Bus Interface 176-Pin Tqfp Pin Signals Pin Signal Label Type1 Interface DEVSEL# PCI BUS Interface Bus Interface Pin Signal DefinitionsSystem DAA Interface Bus Interface Pin Signal Definitions Cont’dSerial Eeprom Interface NMC93C56 or Equivalent ReservedMDP Interface Isdn Interface NON-ISDN Models Isdn Interface Isdn ModelsMDP 144-Pin Tqfp Hardware Interface Signals MDP 144-Pin Tqfp Pin Signals MDP Pin Signals 144-Pin Tqfp Pin Signal Label Interface3 Type1Pllgnd PLL BIF to MDP Interface MDP Pin Signal DefinitionsOverhead Signals MDP to Siemens PSB2186 S/T InterfaceMDP Signal Definitions Contd Pllgnd Connection. Connect to AgndModem INTERCONNECT/NO Connect Current and Power Requirements ELECTRICAL,SWITCHING,AND Environmental CharacteristicsPower and Maximum Ratings Maximum RatingsSymbol Parameter Condition Min Max Units PCI Bus DC Specifications for 3.3V SignalingPCI Bus AC Specifications for 3.3V Signaling PCI Bus3 MDP MDP Digital Electrical CharacteristicsParameter Symbol Min Typ Max Units Test Conditions TELINL1 10. Analog Electrical CharacteristicsName Type Characteristic Value TXA1L1Serial Eeprom Timing Interface Timing and WaveformsPCI Bus Timing 11. Timing Serial Eeprom Interface12. Timing External Device Bus Interface Symbol Description Min Typ Max Units Test Conditions ReadExternal Device Bus Timing WriteISDNCS# DRD# DD0-DD7 ISDNCS# DWR# DD0-DD7IOM-2 Interface 13. Timing IOM-2 InterfaceThis page is intentionally blank General Principles Component PlacementPC Board Layout Guidelines Signal Routing Device Function Noise Source Neutral Noise Sensitive PowerModem Pin Noise Characteristics MDP VDD, VAA7 VCL1 and Vref Circuit Ground PlanesCrystal Circuit Other Considerations CRYSTAL/OSCILLATOR SpecificationsOptional Configurations Telephone and Local Handset InterfaceElectrical Crystal Specifications Surface MountCharacteristic Value MechanicalCrystal Specifications Through Hole Package Dimensions Package Dimensions 144-Pin TqfpRCV56HCF PCI/CardBus Modem Designer’s Guide This page is intentionally blank Device ID Field PCI Configuration RegistersVendor ID Field Bit Offset 3124 2316 158 HexBit Description Command RegisterStatus Register Base Address Register Eeprom Address Copied to Eeprom Configuration DataSerial Eeprom Interface CIS RAMCommand SET Command Set Summary Functional Use SortCommand Set Summary Functional Use Sort Cont’d Data CompressionVoice Commands Command Set Summary Alphanumeric Sort Command Set Summary Alphanumeric Sort Cont’d RCV56HCF PCI/CardBus Modem Designer’s Guide Inside Back Cover Regional Sales Offices