CC3220MOD_17 Datasheet, PDF (58/88 Pages) Texas Instruments – SimpleLink Wi-Fi CERTIFIED Wireless Module Solutions (S and SF)

CC3220MOD
SWRS206A – MARCH 2017 – REVISED JUNE 2017
www.ti.com
The NWP can be active or in LPDS mode and takes care of its own mode transitions. When there is no
network activity, the NWP sleeps most of the time and wakes up only for beacon reception (see
Table 6-3).
Table 6-3. Networking Subsystem Modes
NETWORK PROCESSOR MODE
Network active mode
(processing layer 3, 2, and 1)
Network active mode
(processing layer 2 and 1)
Network active listen mode
Network connected Idle
Network LPDS mode
Network disabled
DESCRIPTION
Transmitting or receiving IP protocol packets
Transmitting or receiving MAC management frames; IP processing not required.
Special power optimized active mode for receiving beacon frames (no other frames supported)
A composite mode that implements 802.11 infrastructure power save operation. The CC3220MODx
NWP automatically goes into LPDS mode between beacons and then wakes to active listen mode
to receive a beacon and determine if there is pending traffic at the AP. If not, the NWP returns to
LPDS mode and the cycle repeats.
Low-power state between beacons in which the state is retained by the NWP, allowing for a rapid
wake up.
The network is disabled
The operation of the application and network processor ensures that the module remains in the lowest
power mode most of the time to preserve battery life.
The following examples show the use of the power modes in applications:
• A product that is continuously connected to the network in the 802.11 infrastructure power-save mode
but sends and receives little data spends most of the time in connected idle, which is a composite of
receiving a beacon frame and waiting for the next beacon.
• A product that is not continuously connected to the network but instead wakes up periodically (for
example, every 10 minutes) to send data, spends most of the time in hibernate mode, jumping briefly
to active mode to transmit data.
6.7 Memory
6.7.1 Internal Memory
The CC3220x device within the CC3220MODx module includes on-chip SRAM to which application
programs are downloaded and executed. The application developer must share the SRAM for code and
data. The micro direct memory access (μDMA) controller can transfer data to and from SRAM and various
peripherals. The CC3220x device ROM holds the rich set of peripheral drivers, which saves SRAM space.
For more information on drivers, see the CC3220x API list.
58
Detailed Description
Submit Documentation Feedback
Product Folder Links: CC3220MOD
Copyright © 2017, Texas Instruments Incorporated