Samsung S5PC110 Manual page 1857

S5PC110_UM
3.4.3.4 Sampling Frequency and Master Clock
When IIS interface Controller operates as master, IIS interface Controller generates IISLRCLK and IISSCLK that
are divided as Root Clock by RFS and BFS value. To decide Sampling Frequency – IISLRCLK -, BLC, BFS, and
RFS are selected first. Optionally, IIS interface Controller clocks out Root clock as IISCDCLK for codec master
clock (if source of root clock is not IISEXTCDCLK).
In slave mode, you must set the value of BLC, BFS and RFS similar to master (ex: Codec). Because IIS interface
controller needs these value for correct operation.
3.4.4 PCM WORD LENGTH AND BFS DIVIDER
PCM Word Length (BLC) setting should be preceded before setting the BFS value.
available value as BLC.
PCM Bit length(BLC)
Available BFS value
3.4.5 BFS DIVIDER AND RFS DIVIDER
RFS value is selected as BFS selected.
BFS Divider
Available RFS value
Table 3-1 Allowed BFS Value as BLC
8bit
16fs, 24fs, 32fs, 48fs
shows RFS available value as BFS.
Table 3-2
Table 3-2 Allowed RFS Value as BFS
16fs, 32fs
256fs, 384fs, 512fs, 768fs.
Table 3-1
16bit
32fs, 48fs
24fs, 48fs
384fs, 768fs.
3 IIS-BUS INTERFACE
shows BFS
24bit
48fs
3-6