CC1010-RTR1 datasheet(99/152 Pages) TI

99 / 152 page

CC1010

SWRS047

Page 99 of 152

Preamble

Manchester encoded data

Data package to be received

Noise

Averaging filter always free-running

Noise

Preamble

Manchester encoded data

Data package to be received

Noise

Averaging filter always free-running

Noise

Figure 28. Free-running averaging filter

Manual Lock

Automatic Lock

Settling

MODEM1.

SETTLING

(1:0)

NRZ mode

MODEM1.LOCK_

AVG_MODE='1'

MODEM1.LOCK_

AVG_IN='0'=→’1’**

UART mode

MODEM1.LOCK_

AVG_MODE='1'

MODEM1.LOCK_

AVG_IN='0'=→’1’**

NRZ mode

MODEM1.LOCK_

AVG_MODE='0'

MODEM1.LOCK_

AVG_IN='X'***

UART mode

MODEM1.LOCK_

AVG_MODE='0'

MODEM1.LOCK_

AVG_IN='X'***

128

Table 31. Minimum preamble bits for locking the averaging filter, NRZ and UART mode

Notes:

** The averaging filter is locked when

MODEM1.LOCK_AVG_IN is set to 1

*** X = Do not care. The timer for the automatic lock is started when RX mode is set in the

RFMAIN

Also please note that in addition to the number of bits required to lock the filter, you need to add the

number of bits needed for the preamble detector. See the next section for more information.

Settling

MODEM1.

SETTLING

(1:0)

Free-running

Manchester mode

MODEM1.LOCK_

AVG_MODE='1'

MODEM1.LOCK_

AVG_IN='0'

Table 32. Minimum number preamble chips for averaging filter, Manchester mode

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