Emerson MVME6100 manual Real-Time Clock and Nvram, 13. M48T37V Access

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1

Board Description and Memory Maps

interrupts may be tailored to meet user requirements. The ST16C554DCQ64 provides constant active interrupt outputs but do not offer TXRDY/RXRDY outputs. Refer to the EXAR ST16C554D data sheet for additional information.

COM 1 is an RS232 port and the TTL-level signals are routed through appropriate EIA-232 drivers and receivers to an RJ45 connector on the front panel. COM2 is also an RS232 port which is routed to an onboard planar header for rear I/O access via option inductors/resistors. Unused control inputs on COM1 and COM2 are wired active. The reference clock frequency for the QUART is 1.8432 MHz. All UART ports are capable of signaling at up to 115 Kbaud.

Real-Time Clock and NVRAM

The Real-Time Clock/NVRAM/Watchdog Timer is implemented using a SGS-Thompson M48T37V Timekeeper SRAM, and M4T28-BR12SH1 SnapHat battery. Refer to the M48T37V data sheets for additional programming information.

Table 1-13. M48T37V Access

Address Offset		Function - 0xF1110000

0x0000	- 0x5FFF	Available for users

0x0100	- 0x0200	VxWorks "bootline"

0x6000	- 0x6FFF	Reserved (MOTLoad expansion)

0x7000	- 0x7FEF	MOTLoad use (GEVs)

0x7FF0 0 0x7FFF		Real Time Block

1-20	Computer Group Literature Center Web Site

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Contents MVME6100 Single-Board Computer Programmer’s Reference GuidePage Ground the Instrument Safety SummaryLithium Battery Caution FlammabilityEMI Caution CE Notice European Community Limited and Restricted Rights Legend Contents Appendix a List of Figures List of Tables Model Number Description About This GuideComments and Suggestions Overview of ContentsBold Conventions Used in This ManualOverview IntroductionMVME6100 Features Summary Feature DescriptionNvram PCI/PMC MVME6100 Board Layout Diagram Default Processor Address Map Default Processor Memory MapMemory Maps Processor Address Start End Size Definition41FF Ffff 29FF FfffF0FF Ffff F100 FfffMOTLoad’s Processor Address Map MOTLoad’s Processor Memory MapDefault PCI Memory Map Default PCI Address MapPCI Address Start End Size Definition VME Memory Map MOTLoad’s PCI Memory MapsSystem I/O Memory Map MOTLoad’s PCI Memory MapsAddress Definition Device Bank 1 I/O Memory MapM48T37V NVRAM/RTC COM 1 UartSystem Status Register System Status RegisterRefclk BankselFlashbsyl AbortlFusestat SrominitEepromwp BdfailFlashawp System Status Register 2- 0xF1100001Fbootbwphdr FbootbwpTstatmask FbawphdrBoardreset Reset Board RsvdSystem Status Register 3- 0xF1100002 10. Presence Detect Register Presence Detect RegisterIpmcprsnt EREADY111. Configuration Header/Switch Register Configuration Header/Switch Register S1Pcieprsntl PMC0PL3 4 5 6 7 Quad Universal Asynchronous Receiver/Transmitter Uart Time Base Enable Register12. Tben Register TBEN013. M48T37V Access Real-Time Clock and NvramAddress Offset Function 0xF1110000 Programming Details MV64360 Multi-Purpose Port ConfigurationMPP Pin Input Number Output Function MV64360 MPP Pin Function AssignmentsMV64360 Reset Configuration Srom MV64360 Power-Up Configuration SettingsMV64360 Power-Up Configuration Settings PCI1 DLL DramMII/GMII GMII/PCS PCI0 DLLDram PLL N TBD BADR0Real-Time Clock and Nvram Flash MemoryM48T37V Access Two-Wire Serial InterfaceI2C Bus Device Addressing DDR Dram Serial Presence DetectDevice Address Device Function Size A2A1A0 AddressTemperature Sensor VPD and User Configuration EEPROMsMV64360 Initialization MV64360 Device Controller Bank AssignmentsPCI Bus 0 and PCI Bus 1 Local Buses MPC Bus and PCI Bus ArbitrationPCI Mode/Frequency Selection Device Bank AssignmentsPCI Configuration Space Idsel Mapping for PCI DevicesIdsel AD20 PCI Bus 1 Local Bus PMC Expansion Slots PCI Arbitration Assignments for MV64360 AsicPCI Arbitration Assignments for MV64360 MPP Pin Assignment PCI MastersPCI Bus 1 Local Bus PMC Expansion Slots PCI Bus 0 Local Bus DevicesMV64360 Interrupt Controller MV64360 Interrupt AssignmentsGroup MV64360 Edge/Level Polarity Interrupt Source PCI-PMC 0 INTD#, PMC INTB# PCI-PMC 0 INTC#, PMC INTA#DS1621 Digital Thermometer and Thermostat provides MV64360 Endian IssuesMotorola Computer Group Documents Table A-1. Motorola Computer Group DocumentsDocument Title Motorola Publication Number Table A-2. Manufacturers’ Documents Manufacturers’ DocumentsDocument Title and Source Publication Number MPC7457EC/DManufacturers’ Documents Table A-2. Manufacturers’ Documents Table A-3. Related Specifications Related SpecificationsIndex