ATA5279-PLQW Atmel, ATA5279-PLQW Datasheet - Page 22

• Manufacturer Part Number: ATA5279-PLQW
• Description: RF Wireless Misc High-end multiple antenna driver IC
• Manufacturer: Atmel

Specifications of ATA5279-PLQW

• Package / Case: VQFN-48
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3.9.3
22
Atmel ATA5279
Driver-related Command Description
Following commands are processed via the LF data buffer:
Table 3-7.
Command
Select driver
Select coil current
Send LF data
Send LF carrier
• Get Driver Setup:
• Get Fault Info:
• Reset Fault Status:
• Set SPI Config:
• Halt Operation:
This command returns the actual setup of the driver stage, i.e., the selected coil, encoded
in the bits D
“Select Driver” and “Set Coil Current” command description below for details on bit coding).
This command is also used in diagnosis mode to fetch the state of the coil connection lines.
This command returns the content of the driver stage fault register back to the
microcontroller via the SPI bus. The register contains both the code for the detected fault
and the number of the driver stage that was active when the fault occurred. Refer also to
the
This command clears the content of the driver stage fault register and sets the operability
bit in the general state register if all supply voltages are present and valid. This command is
necessary to resume normal operation following the occurrence and subsequent removal
of a fault. Please note that prior to this command, the active channel should be switched to
a line that is not faulty. Otherwise, the internal logic might get corrupted and must then be
reset with a negative pulse on the NRES line.
Note that this command is also required to bring the Atmel ATA5279 back into operation
mode once the diagnosis mode was active and was then cleared by a Select Driver
command.
This command changes the two configuration bits PO(L) and PH(A). These bits are
responsible for the serial data processing of the SPI.
Default: PO = 1, PH = 1
As this command is processed immediately, it is not written to the FIFO buffer even if it is a
driver-related command. The effect of this command is that the content of the FIFO buffer
is cleared, hence no new LF data is available, and if any driver is active it will be stopped.
Note that such stops are only carried out at the end of an LF period (i.e., when the
sinusoidal output signal reaches half of the supply voltage).
Section 3.9.4 “Status Monitor” on page 25
Bit Definitions of the Driver-Related SPI Commands
G
,D
1..0
, and the selected current, which can be found in the bits C
L
0
1
0
..
1
7
L
6
0
0
0
..
0
6
L
5
1
1
0
..
0
5
Input Word
BR DM D
L
C
T
4
0
..
4
4
4
C
N
L
T
3
..
3
3
3
3
C
N
L
T
2
..
2
G
2
2
2
for further details.
D
C
N
L
T
1
..
1
1
1
1
1
D
C
N
T
L
..
0
0
0
0
0
L
X
X
X
X
0
7
L
X
X
X
X
6
0
6
L
5
X
X
X
0
X
5
Output Word
L
4
X
X
X
0
X
4
N
L
3
X
X
X
X
3
3
4..0
9125L–RKE–03/11
N
L
X
X
X
X
2
2
(see also
2
N
L
X
X
X
X
1
1
1
N
L
X
X
X
X
0
0