mc33696fje/r2 Freescale Semiconductor, Inc, mc33696fje/r2 Datasheet - Page 26

• Manufacturer Part Number: mc33696fje/r2
• Description: Mc33696 Pll Tuned Uhf Transceiver
• Manufacturer: Freescale Semiconductor, Inc

Received Signal Strength Indicator (RSSI)
16.2 Operation
Two modes of operation are available: sample mode and continuous mode.
16.2.1 Sample Mode
Sample mode allows the peak power of a specific pulse in an incoming frame to be measured.
The quasi peak detector is reset by closing S1. After 7 x T
is set high. On the falling edge of RSSIC, S2 is opened. The voltage on RSSIOUT is sampled and held.
The last RSSI conversion results are stored in the RSSI register and no further conversion is done.
The RSSI register is updated every 32 x T
RSSIC is 32 x T
26
RSSI Register
RSSIOUT
CONFB
RSSIC
MOSI
MISO
S1
S2
digclk
Frozen
Open
Peak Detector
Closed
.
Reset
7 x t
digclk
Updated
Figure 17. RSSI Operation in Sample Mode
Closed
Open
Sampling
MC33696 Data Sheet, Rev. 9
digclk
. Therefore, the minimum duration of the high pulse on
digclk
CMD
Sampled and Hold RSSI Voltage
, S1 is released. S2 is closed when RSSIC
RSSI Value
Closed
Frozen
Open
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