Can anyone help me to clarify the concept of the isochronous channel?

[Tommy_Li]

Dear All:

           I encounter some difficulties when i read the Bluetooth_5.2_Feature_Overiew document

           The document said isochronous communication uses the new LE Isochronous Physical Channel.   As far as i know there are 40 physical channels for BLE, and 3 adv channels and 37 connection channels. So what physical channels are for isochronous channel?

          Thanks in advance.

[Dmitry]

Hi,

The term "physical channel" is not an RF channel but rather a set of rules known by two devices to be in a connection - that includes phy, channel map, hopping sequence, connection interval, access address. Each new set of these rules makes up a new physical channel, and what is meant in the overview - an isochronous channel doesn't use an established LE connection channel but creates a new one.