DHU_UBA_TBUFAD2
DHU_WRITE_WORD(DHU_UBA_TBUFAD2, ((addr>>16) & 0x3F) |
DHU_WRITE_WORD(DHU_UBA_TBUFAD2,
DHU_READ_WORD(DHU_UBA_TBUFAD2) | DHU_TBUFAD2_DMA_START);
DHU_WRITE_WORD(DHU_UBA_TBUFAD2,
DHU_READ_WORD(DHU_UBA_TBUFAD2) | DHU_TBUFAD2_TX_ENABLE);