TM4C129ENCZAD Datasheet, PDF (920/2037 Pages) Texas Instruments – Tiva Microcontroller

External Peripheral Interface (EPI)
Register 29: EPI DMA Transmit Count (EPIDMATXCNT), offset 0x208
This register is used to program the total number of transfers (byte, halfword or word) by the µDMA
to WRFIFO. As each transfer is processed by the EPI, the TXCNT bit field value is decreased by 1.
When TXCNT = 0, the EPI's uDMA request signal is deasserted.
EPI DMA Transmit Count (EPIDMATXCNT)
Base 0x400D.0000
Offset 0x208
Type RW, 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
TXCNT
Type RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit/Field
31:16
15:0
Name
reserved
TXCNT
Type
RO
RW
Reset
0x0000
0x0000
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.
DMA Count
This field is used to program the total number of transfers (byte, halfword
or word) from the µDMA to the EPI WRFIFO.
920
June 18, 2014
Texas Instruments-Production Data