Texas Instruments CC2650DK ユーザーズマニュアル
I
2
C Registers
21.5.1.4 SDR Register (Offset = 8h) [reset = X]
SDR is shown in
and described in
.
Slave Data This register contains the data to be transmitted when in the Slave Transmit state, and the
data received when in the Slave Receive state.
data received when in the Slave Receive state.
Figure 21-17. SDR Register
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
RESERVED
DATA
R-X
R/W-X
Table 21-6. SDR Register Field Descriptions
Bit
Field
Type
Reset
Description
31-8
RESERVED
R
X
Software should not rely on the value of a reserved. Writing any
other value than the reset value may result in undefined behavior.
other value than the reset value may result in undefined behavior.
7-0
DATA
R/W
X
Data for transfer This field contains the data for transfer during a
slave receive or transmit operation. When written the register data is
used as transmit data. When read, this register returns the last data
received. Data is stored until next update, either by a system write
for transmit or by an external master for receive.
slave receive or transmit operation. When written the register data is
used as transmit data. When read, this register returns the last data
received. Data is stored until next update, either by a system write
for transmit or by an external master for receive.
1396
SWCU117A – February 2015 – Revised March 2015
Inter-Integrated Circuit (I
2
C) Interface
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