Information

I2Sx_RCR4 field descriptions (continued)
Field Description
2
Reserved
This read-only field is reserved and always has the value zero.
1
FSP
Frame Sync Polarity
Configures the polarity of the frame sync.
0 Frame sync is active high.
1 Frame sync is active low.
0
FSD
Frame Sync Direction
Configures the direction of the frame sync.
0 Frame Sync is generated externally in Slave mode.
1 Frame Sync is generated internally in Master mode.
46.3.15 SAI Receive Configuration 5 Register (I2Sx_RCR5)
This register must not be altered when RCSR[RE] is set.
Addresses: I2S0_RCR5 is 4002_F000h base + 94h offset = 4002_F094h
Bit 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
R
0
WNW
0
W0W
0
FBT
0
W
Reset
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
I2Sx_RCR5 field descriptions
Field Description
31–29
Reserved
This read-only field is reserved and always has the value zero.
28–24
WNW
Word N Width
Configures the number of bits in each word, for each word except the first in the frame. The value written
must be one less than the number of bits per word. The value of WNW must be greater than or equal to
the value of W0W even when there is only one word in each frame. Word width of less than 8 bits is not
supported.
23–21
Reserved
This read-only field is reserved and always has the value zero.
20–16
W0W
Word 0 Width
Configures the number of bits in the first word in each frame. The value written must be one less than the
number of bits in the first word. Word width of less than 8 bits is not supported if there is only one word
per frame.
15–13
Reserved
This read-only field is reserved and always has the value zero.
Table continues on the next page...
Chapter 46 Synchronous Audio Interface (SAI)
K20 Sub-Family Reference Manual, Rev. 2, Feb 2012
Freescale Semiconductor, Inc. 1165