Rainbow Electronics AT86RF230 User Manual
Page 36
36
AT86RF230
5131A-ZIGB-06/14/06
Bit
Field Name
Reset
R/W
Comments
7:4
CCA_CS_THRES
12
R/W
Threshold for CCA_CS
3:0
CCA_ED_THRES
7
R/W
An ED value above the threshold signals a busy channel during a
CCA_ED measurement.
Table 8-9.
0x09 - CCA_THRES
Note:
CCA_ED_THRES: The CCA_ED request will indicate a busy channel, if the measured receive power
is above -91 dBm + 2*CCA_ED_THRES[dB].
Bit
Field Name
Reset
R/W
Comments
7:0
IRQ_MASK
255
R/W
Mask register for IRQs.
If bit is set to high, then the IRQ is enabled.
If bit is set to low, then the IRQ is disabled.
IRQ_MASK[7] corresponds to IRQ_7.
IRQ_MASK[0] corresponds to IRQ_0.
Table 8-10.
0x0E - IRQ_MASK
Note:
The occurrence of an interrupt will be signaled over the IRQ wire.
Bit
Field Name
Reset
R/W
Comments
7
IRQ_7
0
R
BAT_LOW:
signals low battery
6
IRQ_6
0
R
TRX_UR:
signals a FIFO underrun
5
IRQ_5
0
R
Reserved
4
IRQ_4
0
R
Reserved
3
IRQ_3
0
R
TRX_END:
signals end of frame (transmit and receive)
2
IRQ_2
0
R
RX_START:
signals beginning of receive frame
1
IRQ_1
0
R
PLL_UNLOCK: PLL goes from lock to unlock state
0
IRQ_0
0
R
PLL_LOCK:
PLL goes from unlock to lock state
Table 8-11.
0x0F - IRQ_STATUS
Note:
The occurrence of an interrupt will be signaled over the IRQ wire. A read access will reset the
interrupt bits.
Bit
Field Name
Reset
R/W
Comments
7
AVREG_EXT
0
R/W
1’d0:
use internal analog voltage regulator
1’d1:
use external voltage regulator
6
AVDD_OK
0
R
1’d0:
analog voltage regulator is disabled
1’d1:
internal analog voltage is correct and stable
5:4
AVREG_TRIM
0
R/W
Controls the voltage of the analog voltage regulator.
2’d0:
1.80V
2’d1:
1.75V
2’d2:
1.84V
2’d3:
1.88V