Data Sheet

FMB110 Datasheet Ver.1.0
-14-
Table 12: Microphone Bias
2.4 Power consumptions
Operating Condition
Typical
Unit
Dormant
2
uA
Deep sleep, idle
80
uA
Connectable, average
250
uA
Connected, 975ms BT Sniff, AFH on, average
550
uA
Radio TX on, peak
120
mA
Table 13: Power consumptions
Note:
Power consumption depends on the firmware used. Typical values are shown in the table.
Sniff mode ----- In Sniff mode, the duty cycle of the slave’s activity in the piconet may be reduced. If a slave is in active
mode on an ACL logical transport, it shall listen in every ACL slot to the master traffic, unless that link is being treated as a
scatternet link or is absent due to hold mode. With sniff mode, the time slots when a slave is listening are reduced, so it
benefits the power consumption of the slave and the master shall only transmit to a slave in specified time slots. The sniff
anchor points are spaced regularly with an interval of Tsniff, which depends on the firmware used.
3 Physical Interfaces
3.1 Power Supply
The module needs two power supplies to work properly. One is for the Bluetooth, digital and analog IOs
and the other is for the radio frequency power amplifier. Please refer to the reference designs in 5.
3.2 Reset
The module may be reset from several sources: RESET pin, power-on reset, USB attach reset and software
configured watchdog timer.
The RESET pin is an active high reset. It is recommended that RESET be applied for a period greater than
120us.
At reset the digital I/O pins are set to inputs for bi-directional pins and outputs are tri-state. The pull-down
state is shown below.
Pin Name / Group
Pin Status on Reset
USB_DP
Tristate
USB_DN
Tristate