3.4.3.1.1.1 CHDN – Channel Filter Down-Sampling Register

This register must only be modified if the channel filter is disabled (RDPR.PRFLT = 1). Modifying the settings during operation may lead to unstable operation.

Name:	CHDN
Offset:	0x0AA
Reset:	0x00


Bit	7	6	5	4	3	2	1	0
		0	ADCDN	BBDN[4:0]
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset	0	0	0	0	0	0	0	0

Bit 7 – Reserved Bit

Reserved for future use, read as ‘0’.

Bit 6 – 0

Reserved. Has to be ‘0’ during operation. Otherwise, the RSSI value is corrupted.

Bit 5 – ADCDN ADC down-sampling configuration

Table 3-12. ADCDN Configuration
ADCDN	Description
`0`	Use for RF bands: 418 MHz to 440 MHz and 836 MHz to 870 MHz
`1`	Use for RF bands: 310 MHz to 318 MHz, 441 MHz to 477 MHz and 871 MHz to 956 MHz

Bits 4:0 – BBDN[4:0] Baseband Filter Down-Sampling Ratio

The required setting for each supported bandwidth is found in Table 3-10. Valid settings for BBDN are 2 to 20. All other values are forbidden and might result in flawed circuit behavior.