Rainbow Electronics ATA5812 - Manual (Page 28)

28
ATA5811/ATA5812 [Preliminary]
4689B–RKE–04/04
Figure 22. Flow Chart Operation Modes
OFF Mode After connecting the power supply (battery) to pin VS1 and/or VS2 and if the voltage on
pin VAUX V
VAUX
< 3.5 V (typically) the transceiver is in OFF mode. In OFF mode AVCC,
DVCC and VSOUT are disabled, resulting in very low power consumption (I
S_OFF
is typi-
cally 10 nA). In OFF mode the transceiver is not programmable via the 4-wire serial
interface.
AVCC = OFF
DVCC = OFF
VSOUT = OFF
Pin PWR_ON = 1 or
Pin T1, T2, T3, T4 or
T5 = 0
V
VAUX
> 3.5 V (typ)
V
VAUX
< 3.5 V (typ)
Bit AVCC_EN = 0 and OFF Command and
Pin PWR_ON = 0 and
Pin T1, T2, T3, T4 and T5 = 1
AVCC = VS1
DVCC = VS1
VSOUT = VS1
AVCC = OFF
DVCC = V_REG2
VSOUT = V_REG2
OFF Mode
IDLE Mode AUX Mode
AVCC = VS1
DVCC = VS1
VSOUT = V_REG2
IDLE Mode V
VAUX
< VS1+0.5 V
V
VAUX
> VS1+0.5 V
Bit AVCC_EN = 0 and
OFF Command and
Pin PWR_ON = 0 and
Pin T1, T2, T3, T4 and
T5 = 1
OPM1 OPM0
0 1 TX Mode
1 0 RX Polling Mode
1 1 RX Mode
OP
M1 =
0 and OP
M0
=
0
AVCC = VS1
DVCC = VS1
VSOUT = VS1 or
V_REG2
TX Mode
AVCC = VS1
DVCC = VS1
VSOUT = VS1 or
V_REG2
RX Polling Mode
AVCC = VS1
DVCC = VS1
VSOUT = VS1 or
V_REG2
RX Mode
OPM1 = 1 and OPM0 = 0
OPM1 = 0 and OPM0 = 1
OPM1 = 1 and OPM0 = 0
OPM1 = 1 and OPM0 = 1
or Bit check ok
OPM1 = 0 and OPM0 = 1
OPM1 = 1 and OPM0 = 1
AVCC = VS1
DVCC = VS1
VSOUT = OFF
RX Polling Mode
Bit check ok
VSOUT_EN = 0
Statusbit Power_On = 1
or
Event on Pin T1, T2, T3,
T4 or T5
Pin PWR_ON = 1 or
Pin T1, T2, T3, T4 or
Pin T5 = 0 or
Bit AVCC_EN = 1
AVCC = VS1
DVCC = VS1
VSOUT = OFF
IDLE Mode VSOUT_EN = 0
Statusbit Power_On = 1
or
Event on Pin T1, T2, T3, T4 or T5