Xilinx ML403 specifications Projects interfacing to Aardvark Adapter

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ML403 Board Information

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low_level_dynamic_eeprom: This project transmits and receives data using the low level (L0) software driver. The OPB IIC is the master and the 24LC04 is configured as the slave. The OPB IIC master writes data into the 24LC04 and reads it back. This is a polled mode example.c

Projects interfacing to Aardvark Adapter

multi_master: This project transmits and receives data using the high level (L1) software driver. The OPB IIC is an IIC master and the IIC in the Aardvark is a master. The Microchip 24LC04B is configured as a IIC slave. The WP pin of the 24LCO4 is hardwired to ground on the ML403. The interrupt mode is used. The IIC master in the Aardvark Adapter writes the data to the MicroChip 24LC04B with the No Stop option enabled. Any attempts to write data from the OPB IIC master results in a Bus Busy status. The Aardvark Adapter releases the bus by executing the FREE BUS command. When the bus is free, the OPB IIC master initiates a bus transaction.

repeated_start: This project transmits and receives the data using the high level (L1) driver. The IIC devices on the ML300/ML310/ML410 boards do not support the repeated start option. The ML403 OPB IIC is configured as a master and the Aardvark Adapter IIC is configured as a IIC slave. The OPB IIC writes the data to the Aardvark IIC in multiple transactions with the repeated start option enabled. The external IIC device slave address is a 7 bit address defined by SLAVE_ADDRESS. The number of bytes sent and received is defined by SEND_COUNT and RECEIVE_COUNT.

Figure 17 shows the repeated start example.

Specify 0x70 as the Address. The SPI Control is not used. The transaction log shows 16 write and 16 read transactions at address 70.

X979_17_012907

Figure 17: Repeated Start Example

slave: This project transmits and receives the data using the high level (L1) driver. The ML403 OPB IIC is configured as a slave and the Aardvark Adapter IIC is configured as a IIC master. The Aardvark Adapter IIC writes the data in test_data to the OPB IIC and reads it back.

XAPP979 (v1.0) February 26, 2007

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Contents Included Systems SummaryIntroduction IIC PrimerIntroduction Data Transfer on the IIC Bus Reference System Specifics Reference System SpecificsOPB IIC Control Register Bits Name Description ML403 XC4VFX12 Address MapOPB IIC Registers OPB IIC Registers AddressStatus Register SR Status Register Bit Definitions Contd Microchip 24LC04 Configuring the OPB IIC Core24LC04 Control Byte Allocation ML40x Schematic for IIC ConnectionsML40x Resistors Expansion Header Fpga IIC Pins TotalPhase Aardvark AdapterAardvark Control Center Software Projects Executing the Reference System from EDKProjects interfacing to Aardvark Adapter Running the Applications Running the ApplicationsProject HyperTerminal Parameters Using ChipScope with OPB IIC Invoke XPS. Run Hardware → Generate NetlistRun Start → Programs → ChipScope Pro → ChipScope Inserter Start → Programs → ChipScope Pro → ChipScope Pro Analyzer Making Net Connections in ChipScope InserterSetting Up the Chipscope Trigger Linux Kernel Linux KernelBSP Settings Connected Peripherals Simulation SimulationOPB IIC Simulation Signal Name FunctionalityComplete Simulation Arbitrartion Lost Test Simulation Arbitration Lost Test Code Simulation with iicAA as Master Test code with iicAA as Master X97934012907 Test Code for Simulation with iic20 as Master Revision RevisionHistory References
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