MV64360 Endian Issues | Emerson MVME6100 instruction

Programming Details

2	4.	The interrupting device is addressed from the MV64360 I2C
2		Bus.
		Bus.
	5.	The mapping of VMEbus interrupt sources and Tsi148
		internal interrupt sources are programmable via the Interrupt
		Map Registers 1 and 2 in the Tsi148 ASIC.
	6.	The DS1621 Digital Thermometer and Thermostat provides
		9-bit temperature readings which indicate the temperature of
		the device. The thermal alarm output, TOUT, is active when
		the temperature of the device exceeds a user defined
		temperature TH.
	7.	GPP[1,4,30,31] are unused. They are resistively pulled high
		onboard.

MV64360 Endian Issues

The MV64360 supports only a big endian CPU bus. The endianess of the local memory (DDR and SRAM) is also big endian. Data transferred to/from the local memory is never swapped. The internal registers of the MV64360 are always programed in little endian. On a CPU access to the internal registers, data is byte swapped.

Data swapping on a CPU access to the PCI is controlled via PCI Swap bits of each PCI Low Address register. This configurable setting allows a CPU access to PCI agents with a different endianess convention.

Refer to the MV64360 Data Sheet, listed in Appendix A, Related

Documentation, for additional information and programming details.

2-18	Computer Group Literature Center Web Site

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Emerson MVME6100 manual MV64360 Endian Issues, DS1621 Digital Thermometer and Thermostat provides

Contents

MVME6100 Single-Board Computer Programmer’s Reference GuidePage Ground the Instrument Safety Summary Lithium 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 Guide Comments and Suggestions Overview of Contents Bold Conventions Used in This Manual Overview Introduction MVME6100 Features Summary Feature DescriptionNvram PCI/PMC MVME6100 Board Layout Diagram Processor Address Start End Size Definition Default Processor Memory MapDefault Processor Address Map Memory Maps F100 Ffff 29FF Ffff41FF Ffff F0FF Ffff MOTLoad’s Processor Address Map MOTLoad’s Processor Memory Map Default PCI Memory Map Default PCI Address MapPCI Address Start End Size Definition MOTLoad’s PCI Memory Maps MOTLoad’s PCI Memory MapsVME Memory Map System I/O Memory Map COM 1 Uart Device Bank 1 I/O Memory MapAddress Definition M48T37V NVRAM/RTC Banksel System Status RegisterSystem Status Register Refclk Srominit AbortlFlashbsyl Fusestat System Status Register 2- 0xF1100001 BdfailEepromwp Flashawp Fbawphdr FbootbwpFbootbwphdr Tstatmask Boardreset Reset Board RsvdSystem Status Register 3- 0xF1100002 EREADY1 Presence Detect Register10. Presence Detect Register Ipmcprsnt PMC0PL Configuration Header/Switch Register S111. Configuration Header/Switch Register Pcieprsntl 3 4 5 6 7 TBEN0 Time Base Enable RegisterQuad Universal Asynchronous Receiver/Transmitter Uart 12. Tben Register 13. M48T37V Access Real-Time Clock and NvramAddress Offset Function 0xF1110000 Programming Details MV64360 Multi-Purpose Port Configuration MPP Pin Input Number Output Function MV64360 MPP Pin Function Assignments MV64360 Reset Configuration Srom MV64360 Power-Up Configuration Settings MV64360 Power-Up Configuration Settings PCI1 DLL Dram BADR0 PCI0 DLLMII/GMII GMII/PCS Dram PLL N TBD Real-Time Clock and Nvram Flash Memory M48T37V Access Two-Wire Serial Interface Device Function Size A2A1A0 Address DDR Dram Serial Presence DetectI2C Bus Device Addressing Device Address MV64360 Device Controller Bank Assignments VPD and User Configuration EEPROMsTemperature Sensor MV64360 Initialization Device Bank Assignments MPC Bus and PCI Bus ArbitrationPCI Bus 0 and PCI Bus 1 Local Buses PCI Mode/Frequency Selection PCI Configuration Space Idsel Mapping for PCI DevicesIdsel AD20 MPP Pin Assignment PCI Masters PCI Arbitration Assignments for MV64360 AsicPCI Bus 1 Local Bus PMC Expansion Slots PCI Arbitration Assignments for MV64360 PCI Bus 1 Local Bus PMC Expansion Slots PCI Bus 0 Local Bus Devices MV64360 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 Issues Motorola Computer Group Documents Table A-1. Motorola Computer Group DocumentsDocument Title Motorola Publication Number MPC7457EC/D Manufacturers’ DocumentsTable A-2. Manufacturers’ Documents Document Title and Source Publication Number Manufacturers’ Documents Table A-2. Manufacturers’ Documents Table A-3. Related Specifications Related Specifications Index