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SLOS787H – MAY 2012 – REVISED APRIL 2014
6.13.3.2.7 RX Wait Time Register (0x08)
The RX-wait-time timer is controlled by the value in the RX wait time register 0x08. 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 0x01 according to the minimum tag response time defined by each
standard.
Table 6-29. RX Wait Time Register (0x08)
Function:
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:
0x1F at POR = H or EN = L and at each write to
ISO control
register.
Bit
Name
Function
Description
B7
Rxw7
Defines the time after the TX EOF during which the RX input is ignored. Time
B6
Rxw6
starts from the end of TX EOF.
B5
Rxw5
RX wait range is 9.44 µs to 2407 µs (1 to 255), Step size 9.44 µs.
B4
Rxw4
The following default timings are preset by the ISO Control register (0x01):
RX wait time
B3
Rxw3
9.44 µs
→
FeliCa
B2
Rxw2
66 µs
→
ISO14443A and B
B1
Rxw1
180 µs
→
Reserved
B1
Rxw0
293 µs
→
ISO15693 (TI Tag-It HF-I)
Copyright © 2012–2014, Texas Instruments Incorporated
Detailed Description
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