Texas Instruments CC2650DK 사용자 설명서
Sensor
Controller
RAM
Event
control
Wakeup
controller
System (MCU) Bus interface
P
e
ri
p
h
e
ral
B
U
S
(
P
B
U
S
)
HW
Arbitrator
Timer 0/1
IO Control
AUX Control
x
ADC
x
Comparators
x
Current source
Time-to-digital
converter
E
v
e
n
t
B
U
S
Semaphore
Oscillator
interface
AUX Analog
interface
Introduction
17.1.1 AUX Hardware Overview
Figure 17-1. AUX_PD Block Diagram
The AUX power domain is connected to the MCU system through an asynchronous interface, ensuring
that all modules connected to the AUX bus are accessible from the system CPU.
that all modules connected to the AUX bus are accessible from the system CPU.
The peripherals in AUX_PD are connected to a 32-bit wide bus called PBUS, and all registers are aligned
on 32-bit boundaries regardless of size to allow access from both the 32-bit system CPU and the 16-bit
sensor controller. All peripherals, other than the ADI and DDI modules, only implement 16-bit registers.
on 32-bit boundaries regardless of size to allow access from both the 32-bit system CPU and the 16-bit
sensor controller. All peripherals, other than the ADI and DDI modules, only implement 16-bit registers.
The sensor controller always wins arbitration when the system CPU accesses the same peripheral
simultaneously, ensuring minimum execution time for the sensor controller. The sensor controller uses two
or three clock cycles per instruction, dependent on operand size used. Accessing the oscillator or analog
interfaces requires more cycles, as the sensor controller is communicating with asynchronous peripherals
in the analog domain of the chip.
simultaneously, ensuring minimum execution time for the sensor controller. The sensor controller uses two
or three clock cycles per instruction, dependent on operand size used. Accessing the oscillator or analog
interfaces requires more cycles, as the sensor controller is communicating with asynchronous peripherals
in the analog domain of the chip.
The arbiter prevents accesses to AUX peripherals which are not enabled (clock is stopped), or if the
address region is not assigned to a peripheral.
address region is not assigned to a peripheral.
1188
AUX – Sensor Controller with Digital and Analog Peripherals
SWCU117A – February 2015 – Revised March 2015
Copyright © 2015, Texas Instruments Incorporated