This mode features an auto-increment function of the address during the datatransfers. The 6-byte command eeBstCfg defines the 28-bit start address and theburst length (1 to 216 transfers).The length of a single data unit is fixed to word. Hence a maximum of 256 KB canbe transferred in burst addressing mode.5.2.3 LBus-I/F protocolSince no address signals are available externally, the addresses for data accessesare part of a dedicated command protocol, which prelude each data transfer andare sent by the Host CPU. These commands contain also information concerningthe type and direction of an access as well as the number of bytes to be transfered.The commands can have up to six byte length, followed by a specified numberof data bytes.Five different commands are available to set the related data transfer modes.Following table gives an overview of the commands.Table 5-4 LBus-I/F commands overviewCommand FunctionShortcut Size NameeeShortOffs 2 byte Short address offset Sets the upper 12 address bits forshort addressing modeeeShort 2 byte Short address accessdefines the lower 12 bits in shortaddressing mode and initiates datatransfereeLong 4 byte Long address accessdefines 28 address bits in longaddressing mode and initiates datatransfereeBstCfg 6 byte Burst transfer defines 28-bit start address, burstlength and initiates burst data transfereeNOP 1 byte No operation Performs no operationHost CPU Interface Chapter 5Preliminary User's Manual S19203EE1V3UM00 125
