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2.3.2 Direct Advertising
After paired with Master, the RCU will enter BLE mode and store bonding information.
When the RCU is woken up from deep sleep by pressing any button, the RCU enters IR mode in non-
connection state, and due to the stored bonding information, it will send directed advertising packets for 2
seconds and indirect advertising packets for 10 seconds. If connection fails to be established during this 2s
duration, the RCU will send indirect advertising packets for 10 seconds. The RCU will enter deep sleep if
adv time reaches the "10s" timeout duration.
After power cycle, the RCU with pairing information will send directed advertising packets for 2 seconds,
and automatically reconnect with the dongle. If connection fails to be established during this 2s duration,
the RCU will send indirect advertising packets for 10 seconds. The RCU will enter deep sleep if adv time
reaches the "10s" timeout duration.
2.4 Pairing State
2.4.1 Pairing
The remote shall enter pairing mode with pressing the "OK" button and the "Right" button for 5 seconds
and after "OK" and "Right" button are released.
Once in advertising mode (RCU will send in-direct adv pkt, adv timeout: 30s), the feedback red LED will
blink at the rate of 160mS on and 160mS off.
Note
The LED blinking frequency has a deviation of 1~3ms (when Power Management is disabled)/up to
10ms (when Power Management is enabled).
The ADV_IND packets will be sent at every PAIR_ADV_INTERVAL for up to
PAIR_ADV_DURATION.
Within 30 seconds, click the "SW1" button of the dongle.
The red LED of the dongle will be always on to indicate pairing success. The red LEDs of the RC will be
turned off.
If user presses the "OK" button and the "Right" button again to initiate pairing to an already paired remote,
the RCU should delete previous pairing info and start pairing mode.
After paired with a dongle, if the RCU stays in idle state for 60s, it will enter deep sleep and disconnect
from the dongle. After wakeup triggered by key press (not release the key), the RCU will send an IR code
PS-20033000-E1
Spec For TLSR827x-based BLE Audio Remote Control
14
Ver.0.1.0
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