ATA5811_06 ATMEL [ATMEL Corporation], ATA5811_06 Datasheet - Page 45
ATA5811_06
Manufacturer Part Number
ATA5811_06
Description
UHF ASK/FSK TRANSCEIVER
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.ATA5811_06.pdf
(92 pages)
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9.7
Figure 9-6.
4689F–RKE–08/06
Pin VAUX
(Status register)
P_ON_AUX
Timing Pin VAUX, Status Bit P_On_Aux
N_RESET
VSOUT
DVCC
VAUX
CLK
IRQ
To switch the transceiver from OFF to AUX mode, the voltage on pin VAUX V
3.5V (typically) (see
DVCC and the power supply for external devices VSOUT are switched on.
If V
After the voltage on pin VSOUT exceeds 2.3 V (typically) and the start-up time of the XTO is
elapsed the output clock on pin CLK is available. Because the enabling of pin CLK is asynchro-
nous the first clock cycle may be incomplete. N_RESET is set to high if V
(typically) and the XTO is settled.
If the transceiver is in any active mode (Idle, TX, RX, RX_Polling), a positive edge on pin VAUX
and V
an interrupt. If P_On_Aux is still 1 during the positive edge on pin VAUX no interrupt is issued.
P_On_Aux and the interrupt is deleted after reading the status register.
V
V
3.5V (typ)
2.0V (typ)
Thres_2
Thres_1
Mode
VAUX
OFF
VAUX
= 2.38V (typ)
= 2.3V (typ)
exceeds 3.5V (typically) the status bit P_On_Aux is set to 1 and an interrupt is issued.
> VS1 + 0.5V sets P_On_Aux to 1. The state transition P_On_Aux 0
Mode
AUX
Figure
9-6). If V
V
VAUX
VAUX
> VS1 + 0.5V (typ)
exceeds 2V (typically) pin N_RESET is set to low,
IDLE, TX, RX, RX polling
Mode
ATA5811/ATA5812
V
VAUX
> VS1 + 0.5V (typ)
VSOUT
VAUX
exceeds 2.38V
must exceed
1 generates
45
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