2 suggested tfth and rfth for dma servicing, Fifo write/read table -10, Tfth and rfth values for dma servicing -10 – Intel PXA255 User Manual
Page 498: Section 14.6.2, Section 14.6.1.2, Table 14-4, For det, 2 serial audio controller i, S/msb-justified control register (sacr1)