NOTE
The ADT Counter starts counting on detection of the complete
TS Character. It must be noted that by this time, exactly 10
ETUs have elapsed since the start bit of the TS character. The
user must take this into account while programming this
register.
Address: Base a 3Ah offset
Bit
7
6
5
4
3
2
1
0
Read
Write
Reset
0
0
0
0
0
0
0
0
UARTx_AP7816A_T0 field descriptions
Field
Description
7–0
ADTI_H
ATR Duration Time Integer High (C7816[TTYPE] = 0)
Used to calculate the value used for the ADT Counter. This register field provides the most significant byte
of the 16 bit ATR Duration Time Integer field ADTI formed by {AP7816A_T0[ADTI_H],
AP7816B_T0[ADTI_L]}. Programming a value of ADTI = 0 disables the ADT counter. This value is used
only when C7816[TTYPE] = 0. See
46.3.32 UART 7816 ATR Duration Timer Register B
(UARTx_AP7816B_T0)
The AP7816B_T0 register contains variables used in the generation of the ATR Duration
Timer. This register may be read at any time. This register must be written to only when
C7816[ISO_7816E] is not set, except when writing 0 to clear the ADT Counter.
NOTE
The ADT Counter starts counting on detection of the complete
TS Character. It must be noted that by this time, exactly 10
ETUs have elapsed since the start bit of the TS character. The
user must take this into account while programming this
register.
Address: Base a 3Bh offset
Bit
7
6
5
4
3
2
1
0
Read
Write
Reset
0
0
0
0
0
0
0
0
UARTx_AP7816B_T0 field descriptions
Field
Description
7–0
ADTI_L
ATR Duration Time Integer Low (C7816[TTYPE] = 0)
Chapter 46 Universal Asynchronous Receiver/Transmitter (UART)
K22F Sub-Family Reference Manual , Rev. 3, 7/2014
Freescale Semiconductor, Inc.
1169
