JODY-W2 - System integration manual
UBX-18068879 - R14
System description
Page 9 of 84
C1 - Public
Power management
JODY-W2 series modules have several operation modes. The operation modes and general guidelines
for Wi-Fi and Bluetooth operation are defined in
Table 3
.
General
Status
Power State
Description
Power-down
Not Powered
VBAT
,
VIO,
and
1V8
supply not present or below the operating range: module is
switched off.
Power Down
This is done by asserting
PDn
and
CORE_PDn
low. This is the lowest power condition
with active voltage rails. All internal clocks are shut down; register and memory
states are not maintained. Upon exiting power down mode, a reset is automatically
performed, and a firmware re-download is required to re-enter any of the normal
operation modes.
General
operation
Deep Sleep
This is a low-power state used in the sleep state of many power save modes. It is a
low-power state where the internal reference clock and many blocks in the chip are
switched off. Only a slow sleep clock is used to maintain register and memory states.
Wake-up does not require a firmware re-download.
Active
TX/RX data connection enabled, with the system running at the specified power
consumption.
Wi-Fi
operation
IEEE Power Save
(Station mode)
The device automatically wakes up for beacon reception. This is dependent on the
DTIM value of the AP it is connected to. If it is a DTIM value of 1 along with a beacon
interval of 100 ms, the device wakes up every 100 ms. Similarly, with DTIM =2, the
device wakes up at every 200 ms, and so on.
Bluetooth
operation
Page scan
The device accepts connection and waits for a connection.
Page & Inquiry Scan
The device is actively searching for connection.
LE advertisement
Bluetooth LE advertisement, transmits advertisement data periodically.
Table 3: Power states
1.2
Pin configuration and function
Pin attributes
•
FUNCTION
: Pin function
•
PIN NAME
: The name of the package pin or terminal
•
PIN NUMBER
: Package pin numbers associated with each signal.
•
POWER
: The voltage domain that powers the pin
•
TYPE
: Signal type description:
o
I = Input
o
O = Output
o
I/O = Input and Output
o
D = Open drain
o
DS = Differential
o
PWR = Power
o
GND = Ground
o
PU = Internal pull-up
o
PD = Internal pull-down
o
H = High-Impedance pin
o
RF = Radio interface
•
SIGNAL NAME
: The signal name for that pin in the mode being used.
•
REMARKS
: Pin description and notes.
