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6.14.1.2.7 RX Wait Time Register (0x08)
Table 6-25
describes the bit fields of the RX Wait Time register. This register defines the time after TX
EOF when the RX input is disregarded; for example, to block out electromagnetic disturbance generated
by the responding card.
Default Value: 0x1F, set at POR = H or EN = L and at each write to the ISO Control register
The RX wait time timer is controlled by the value in the RX Wait Time register. This timer defines the time
after the end of the transmit operation in which the receive decoders are not active (held in reset state).
This prevents incorrect detections resulting from transients following the transmit operation. The value of
the RX wait time register defines this time in increments of 9.44 µs. This register is preset at every write to
ISO Control register according to the minimum tag response time defined by each standard.
BIT NO.
BIT NAME
B7
Rxw7
B6
Rxw6
B5
Rxw5
B4
Rxw4
B3
Rxw3
B2
Rxw2
B1
Rxw1
B1
Rxw0
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Table 6-25. RX Wait Time Register (0x08)
FUNCTION
Defines the time after the TX EOF during which the RX input is ignored.
Time starts from the end of TX EOF.
RX wait range is 9.44 µs to 2407 µs (1 to 255). Step size is: 9.44 µs.
RX wait time. B7 is the
MSB.
The following default timings are preset by the ISO Control register (0x01):
9.44 µs for FeliCa
66 µs for ISO/IEC 14443 A and B
293 µs for ISO/IEC 15693 (TI Tag-It HF-I)
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SLOS732G – JUNE 2011 – REVISED MARCH 2020
DESCRIPTION
TRF7960A
TRF7960A
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