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2. Activate Fast-tracking mode
3. Configure to load the Rx-Divider to nominal value
4. Load the Rx-Divider to nominal value (first four steps match 3.)
5. Start AGC feedback operation
6. Wait a certain time for AGC to settle.
7. Card detection:
UM10858
User manual
COMPANY PUBLIC
a. Set AGC_FAST_MODE_ENABLE = 1
b. Set AGC_FAST_MODE_STEP
c. Set AGC_FAST_MODE_DURATION
a. Disable the AGC operation by writing "0" to
CLIF_AGC_CONFIG0_REG.AGC_MODE_ENABLE.
b. Configure the AGC to manual mode by writing "0" to
CLIF_AGC_CONFIG0_REG.AGC_MODE_SEL.
c. Configure the AGC input to card-mode by writing "1" to
CLIF_AGC_CONFIG0_REG.AGC_INPUT_SEL.
d. Configure the AGC time constant and the
CLIF_AGC_CONFIG0_REG.AGC_TIME_CONSTANT (value to be added) and
CLIF_AGC_CONFIG0_REG.AGC_THRESHOLD (value to be added)
a. Disable the AGC operation by writing "0" to
CLIF_AGC_CONFIG0_REG.AGC_MODE_ENABLE.
b. Configure the AGC to manual mode by writing "0" to
CLIF_AGC_CONFIG0_REG.AGC_MODE_SEL.
c. Configure the AGC input to card-mode by writing "1" to
CLIF_AGC_CONFIG0_REG.AGC_INPUT_SEL.
d. Configure the AGC time constant and the
CLIF_AGC_CONFIG0_REG.AGC_TIME_CONSTANT (value to be added) and
CLIF_AGC_CONFIG0_REG.AGC_THRESHOLD (value to be added)
e. Load the CM value CLIF_AGC_VALUE_REG.AGC_VALUE_RM into the AGC
register by writing "1" to CLIF_AGC_CONFIG_REG.AGC_LOAD.
a. Enable the AGC by writing "1" to
CLIF_AGC_CONFIG_REG.AGC_MODE_ENABLE.
b. Configure the AGC to feedback mode by writing "1" to
CLIF_AGC_CONFIG0_REG.AGC_MODE_SEL.
a. Compare AGC control value with nominal value. If the change exceeds a certain
threshold, then a card is detected.
b. Perform protocol check using Reader Mode configuration for the AGC.
c. If no card responds to the request, then the actual AGC value is stored as nominal
value for the next comparison.
All information provided in this document is subject to legal disclaimers.
Rev. 1.4 — 14 May 2018
314514
UM10858
PN7462 family HW user manual
© NXP B.V. 2018. All rights reserved.
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