Texas Instruments SimpleLink CC2620 Technical Reference Manual page 1270

AUX – Sensor Controller Registers
17.7.4.9 AUTOTAKE Register (Offset = 20h) [reset = 0h]
AUTOTAKE is shown in
Sticky Request For Single Semaphore
31 30 29 28
15 14 13 12
Bit Field
31-3 RESERVED
2-0 SMPH_ID
1270
AUX – Sensor Controller with Digital and Analog Peripherals
Figure 17-45 and described in
Figure 17-45. AUTOTAKE Register
27 26 25 24
RESERVED
R-0h
11 10 9 8
RESERVED
R-0h
Table 17-67. AUTOTAKE Register Field Descriptions
Type Reset
R 0h
R/W 0h
Copyright © 2015, Texas Instruments Incorporated
Table 17-67.
23 22 21 20
7 6 5 4
Description
Software must not rely on the value of a reserved. Writing any other
value than the reset value may result in undefined behavior.
Requesting a certain semaphore is done by writing the
corresponding semaphore ID, 0x0-0x7, to SMPH_ID. The request is
sticky and once the semaphore becomes available it will be taken. At
the same time, SMPH_AUTOTAKE_DONE event is asserted. This
event is deasserted when SW releases the semaphore or a new ID
is written to SMPH_ID.
Note: SW must wait until SMPH_AUTOTAKE_DONE event is
triggered before writing a new ID to SMPH_ID. Failing to do so might
lead to permanently lost semaphores as the owners may be
unknown.
SWCU117C – February 2015 – Revised September 2015
www.ti.com
19 18 17 16
3 2 1 0
SMPH_ID
R/W-0h
Submit Documentation Feedback