MC13201 Technical Data, Rev. 1.1,

6

Freescale Semiconductor

Figure 4. Reported Power Level versus Input Power in CCA Mode

Figure 5. Reported Power Level Versus Input Power for Energy Detect or Link Quality Indicator

4.3

Transmit Path Description

For the transmit path, the TX data that was previously stored in TX Packet RAM is retrieved, formed into

packets per the 802.15.4 PHY, spread, and then up-converted to the transmit frequency.

Because the MC13201 is used in packet mode, data is processed as an entire packet. The data is first loaded

into the TX buffer. The MCU then requests that the MC13201 transmit the data. The MCU is notified via

an interrupt when the whole packet has successfully been transmitted.

-100

-90

-80

-70

-60

-50

-90

-80

-70

-60

-50

Input Power (dBm)

802.15.4 Accuracy

and range Requirements

-85

-75

-65

-55

-45

-35

-25

-15

-85

-75

-65

-55

-45

-35

-25

-15

Input Power Level (dBm)

802.15.4 Accuracy

and Range Requirements