Rainbow Electronics ATA5812 - Manual (Page 46)

46
ATA5811/ATA5812 [Preliminary]
4689B–RKE–04/04
Command:
Write Control Register
The control registers can be written individually or successively. An echo of the com-
mand and the data bytes are provided for the microcontroller on pin SDO_TMDO.
Figure 36. Write Control Register
Command:
OFF Command
If AVCC_EN in control register 1 is 0, the input level on pin PWR_ON is low and on the
key inputs Tn is high, the OFF command sets the transceiver in the OFF mode.
Figure 37. OFF Command
Command: Delete IRQ The delete IRQ command sets pin IRQ to low.
Figure 38. Delete IRQ
Command Structure The three most significant bits of the command (Bit 5 to Bit 7) indicates the command
type. Bit 0 to Bit 4 describes the target address when reading or writing a control or sta-
tus register. In all other commands Bit 0 to Bit 4 have no effect and should be set to 0 for
compatibility reasons with future products.
Command: Write Control Register X
SCK
Data Control Register X
Write Control Register X
SDI_TMDI
SDO_TMDO
CS
MSB LSB MSB LSB
Nr. Bytes in the TX/RX Data Buffer
Command: Write Control Register Y
MSB LSB
Data Control Register X
Command: OFF Command
SCK
SDI_TMDI
SDO_TMDO
CS
MSB LSB
Nr. Bytes in the TX/RX Data Buffer
Command: Delete IRQ
SCK
SDI_TMDI
SDO_TMDO
CS
MSB LSB
Nr. Bytes in the TX/RX Data Buffer