ISD91200 Series Technical Reference Manual
Release Date: Sep 16, 2019
- 271 -
Revision 2.4
31
30
29
28
27
26
25
24
TX
23
22
21
20
19
18
17
16
TX
15
14
13
12
11
10
9
8
TX
7
6
5
4
3
2
1
0
TX
Table 5-106 SPI Data Transmit Register (SPI1_TX0, address 0x4003_8020)
Bits
Description
[31:0]
TX
Data Transmit Register
The Data Transmit Registers hold the data to be transmitted in the next
transfer. Valid bits depend on the transmit bit length field in the SPI1_CTL
register. For example, if TXBITLEN is set to 0x08 and the TXNUM is set to
0x0, the bit SPI1_TX0[7:0] will be transmitted in next transfer. If TXBITLEN
is set to 0x00 and TXNUM is set to 0x1, the core will perform two 32-bit
transmit/receive successive using the same setting (the order is
SPI1_TX0[31:0], SPI1_TX1[31:0]).
SPI Data Transmit Register (TX1)
Register
Offset
R/W
Description
Reset Value
SPI1_TX1
S 0x24 W
Data Transmit Register 1
0x0000_0000
31
30
29
28
27
26
25
24
TX
23
22
21
20
19
18
17
16
TX
15
14
13
12
11
10
9
8
TX
7
6
5
4
3
2
1
0
TX
Table 5-107 SPI Data Transmit Register (SPI1_TX1, address 0x4003_8024)
Bits
Description