LM3S828 Datasheet, PDF (353/526 Pages) Texas Instruments – ARM and Thumb are registered trademarks and Cortex is a trademark

Stellaris^® LM3S828 Microcontroller
Register 17: ADC Sample Sequence FIFO 0 Status (ADCSSFSTAT0), offset
0x04C
Register 18: ADC Sample Sequence FIFO 1 Status (ADCSSFSTAT1), offset
0x06C
Register 19: ADC Sample Sequence FIFO 2 Status (ADCSSFSTAT2), offset
0x08C
Register 20: ADC Sample Sequence FIFO 3 Status (ADCSSFSTAT3), offset
0x0AC
This register provides a window into the sample sequencer, providing full/empty status information
as well as the positions of the head and tail pointers. The reset value of 0x100 indicates an empty
FIFO. The ADCSSFSTAT0 register provides status on FIFO0, ADCSSFSTAT1 on FIFO1,
ADCSSFSTAT2 on FIFO2, and ADCSSFSTAT3 on FIFO3.
ADC Sample Sequence FIFO 0 Status (ADCSSFSTAT0)
Base 0x4003.8000
Offset 0x04C
Type RO, reset 0x0000.0100
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
FULL
reserved
EMPTY
HPTR
TPTR
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
1
0
0
0
0
0
0
0
0
Bit/Field
31:13
12
11:9
8
7:4
3:0
Name
reserved
FULL
reserved
EMPTY
HPTR
TPTR
Type
RO
RO
RO
RO
RO
RO
Reset
0x0
0
0x0
1
0x0
0x0
Description
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.
FIFO Full
When set, this bit indicates that the FIFO is currently full.
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.
FIFO Empty
When set, this bit indicates that the FIFO is currently empty.
FIFO Head Pointer
This field contains the current "head" pointer index for the FIFO, that is,
the next entry to be written.
FIFO Tail Pointer
This field contains the current "tail" pointer index for the FIFO, that is,
the next entry to be read.
June 18, 2012
353
Texas Instruments-Production Data