Table 3.13 in the CP2615 Datasheet (captioned "Read CP2615 Firmware Revision") depicts an operation available in Configuration Mode to read the Firmware Version Number. How does the value obtained by this sequence map to a CP2615 firmware revision?
The CP2615-A02 firmware version number consists of an ASCII-encoded null-terminated string in the format 2615.x.y.z, where 'x', 'y', and 'z' comprise the firmware version number, and can be one or more characters each. The following table illustrates the data returned by reading 16 bytes from address 0xFFFB on a CP2615-A02 device:
The CP2615-A01 device does not have its firmware version encoded as described above. For the -A01 device, reading 16 bytes from address 0xFFFB returns the following data
For more information, including an alternative means to determine the revision of a CP2615 device (suitable for an end-user situation, e.g. where an app running on the phone or USB host would query the version number), see the KB article "Methods to determine CP2615 revision".