LM3S2B93 Datasheet, PDF (863/1194 Pages) Texas Instruments – Stellaris® LM3S2B93 Microcontroller

Stellaris^® LM3S2B93 Microcontroller
Register 8: I²S Receive FIFO Configuration (I2SRXFIFOCFG), offset 0x804
This register configures the sample for dual-channel operation. In Stereo mode, the LRS bit toggles
between Left and Right as the samples are read from the receive FIFO. In Mono mode, both the
left and right samples are stored in the FIFO. The FMM bit can be used to read only the left or right
sample as determined by the LRP bit. In Compact Stereo 8- or 16-bit mode, both the left and right
samples are read in one access from the FIFO.
I2S Receive FIFO Configuration (I2SRXFIFOCFG)
Base 0x4005.4000
Offset 0x804
Type R/W, reset 0x0000.0000
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
reserved
Type RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
reserved
FMM
CSS
LRS
Type RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit/Field
31:3
2
Name
reserved
FMM
Type
Reset Description
RO 0x0000.000 Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
R/W
0
FIFO Mono Mode
Value Description
0 The receiver is in Stereo Mode.
1 The receiver is in Mono mode.
If the LRP bit in the I2SRXCFG register is clear, data is read
while the I2S0RXWS signal is low (Right Channel); if the LRP
bit is set, data is read while the I2S0RXWS signal is high (Left
Channel).
1
CSS
R/W
0
Compact Stereo Sample Size
Value Description
0 The receiver is in Compact 16-bit Stereo Mode with a 16-bit
sample size.
1 The receiver is in Compact 8-bit Stereo Mode with a 8-bit sample
size.
0
LRS
R/W
0
Left-Right Sample Indicator
Value Description
0 The left sample is the next position to be read.
1 The right sample is the next position to be read.
This bit is only meaningful in Compact Stereo Mode.
January 20, 2012
863
Texas Instruments-Production Data