NXP Semiconductors PN544 C2 - Page 47

NXP Semiconductors
UM191812
PN544 C2 User Manual
191812 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved.
User Manual Rev. 1.2 — 2010-06-16 47 of 172
The NXP_SELF_TEST_ANTENNA command has the following parameters:
Table 29. Antenna Self test Command
Description Length
BoundaryConditions 4
Boundary conditions used during Antenna Self test:
- 1st one relates to RF sensitivity on TX1.
- 2nd one relates to RF sensitivity on TX2.
- 3rd one relates to Current detection level on TX1 & TX2.
- 4th one relates to ANT1/ANT2 circuitry check.
This parameter is optional, in case it is not set in the command the latest set values
are used to perform the test (default values are 0x05 0x05 0x04 0x09).
The response to the NXP_SELF_TEST_ANTENNA command is as follows:
Table 30. Antenna Self test Command Response
Description Length
ErrorCode 1
Measured Values 4
ErrorCode field indicates which condition has failed during the test:
- 0x00: No failure.
- 0x79: 1
st
condition failed (RF sensitivity on TX1).
- 0x7A: 2
nd
condition failed (RF sensitivity on TX2).
- 0x7B: 3
rd
condition failed (Current detection level on TX1 & TX2).
- 0x7C: 4
th
condition failed (ANT1/ANT2 circuitry check).
Measured Values: Last measured value during self Test, these values can be used
to run the antenna test again in case of failure.
NXP_SELF_TEST_ANTENNA boundary conditions are described in [11].