User manual

...the world's most energy friendly microcontrollers
2012-04-24 - Giant Gecko Family - d0053_Rev0.96 490
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17.5.24 USARTn_I2SCTRL - I2S Control Register
Offset Bit Position
0x05C
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
9 8 7 6 5 4 3 2 1 0
Reset
0x0
0 0 0 0 0
Access
RW RW RW RW RW RW
Name
FORMAT
DELAY
DMASPLIT
JUSTIFY
MONO
EN
Bit Name Reset Access Description
31:11 Reserved
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
10:8 FORMAT 0x0 RW I2S Word Format
Configure the data-width used internally for I2S data
Value Mode Description
0 W32D32 32-bit word, 32-bit data
1 W32D24M 32-bit word, 32-bit data with 8 lsb masked
2 W32D24 32-bit word, 24-bit data
3 W32D16 32-bit word, 16-bit data
4 W32D8 32-bit word, 8-bit data
5 W16D16 16-bit word, 16-bit data
6 W16D8 16-bit word, 8-bit data
7 W8D8 8-bit word, 8-bit data
7:5 Reserved
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
4 DELAY 0 RW Delay on I2S data
Set to add a one-cycle delay between a transition on the word-clock and the start of the I2S word. Should be set for standard I2S format
3 DMASPLIT 0 RW Separate DMA Request For Left/Right Data
When set DMA requests for right-channel data are put on the TXBLRIGHT and RXDATAVRIGHT DMA requests.
2 JUSTIFY 0 RW Justification of I2S Data
Determines whether the I2S data is left or right justified
Value Mode Description
0 LEFT Data is left-justified
1 RIGHT Data is right-justified
1 MONO 0 RW Stero or Mono
Switch between stereo and mono mode. Set for mono
0 EN 0 RW Enable I2S Mode
Set the U(S)ART in I2S mode.