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M451
May. 4, 2018
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new value of CNT (SC_TMRCTL0[23:0], SC_TMRCTL1[7:0], SC_TMRCTL2[7:0]) and re-counting.
The time-out value will be CNT (SC_TMRCTL0[23:0], SC_TMRCTL1[7:0], SC_TMRCTL2[7:0])+1.
0110
Same as 0010, but when the down counter equals to 0, it will set TMRx_IS(SC_INTSTS[5:3]) and counter will
re-load the CNT (SC_TMRCTL0[23:0], SC_TMRCTL1[7:0], SC_TMRCTL2[7:0]) value. When the next START
bit is detected, counter will re-count until software clears TMRx_SEN (SC_ALTCTL[7:5]).
When TMRx_ATV (SC_ALTCTL[15:13]) =1, software can change CNT (SC_TMRCTL0[23:0],
SC_TMRCTL1[7:0], SC_TMRCTL2[7:0]) value at any time. When the down counter equals to 0, counter will
reload the new value of CNT (SC_TMRCTL0[23:0], SC_TMRCTL1[7:0], SC_TMRCTL2[7:0]) and re-count.
The time-out value will be CNT (SC_TMRCTL0[23:0], SC_TMRCTL1[7:0], SC_TMRCTL2[7:0])+1.
0111
The down counter started when the first START bit (reception or transmission) detected and ended when
software clears TMRx_SEN (SC_ALTCTL[7:5]) bit. If next START bit detected, counter will reload the new
value of CNT (SC_TMRCTL0[23:0], SC_TMRCTL1[7:0], SC_TMRCTL2[7:0]) and re-counting.
If the counter decreases to 0 before the next START bit detected, hardware will generate an interrupt to CPU.
The time-out value will be CNT (SC_TMRCTL0[23:0], SC_TMRCTL1[7:0], SC_TMRCTL2[7:0])+1.
Start
Start counting when the first START bit detected after TMRx_SEN (SC_ALTCTL[7:5]) set to 1.
End
Stop counting after TMRx_SEN (SC_ALTCTL[7:5]) set to 0.
1000
The up counter starts when TMRx_SEN (SC_ALTCTL[7:5]) enabled and ends when TMRx_SEN
(SC_ALTCTL[7:5]) disabled. This count value will be stored in CNTx(SC_TMRDAT0 [23:0],
SC_TMRDAT1_2[7:0], SC_TMRDAT1_2[15:8). In this mode, hardware cannot generate any interrupt to CPU.
The real count value will be CNTx(SC_TMRDAT0 [23:0], SC_TMRDAT1_2[7:0], SC_TMRDAT1_2[15:8]) +1.
Start
Start counting after TMRx_SEN (SC_ALTCTL[7:5]) set to 1, and the start count value is 0
(hardware will ignore CNT (SC_TMRCTL0[23:0], SC_TMRCTL1[7:0], SC_TMRCTL2[7:0])
value).
End
Stop counting after TMRx_SEN (SC_ALTCTL[7:5]) set to 0 and the value stored to
CNTx(SC_TMRDAT0 [23:0], SC_TMRDAT1_2[7:0], SC_TMRDAT1_2[15:8) register.
1111
Down counter starts when software set TMRx_SEN (SC_ALTCTL[7:5]) bit or any START bit been detected
and ends when software clears TMRx_SEN (SC_ALTCTL[7:5]) bit. If next START bit detected, counter will
reload the new value of CNT (SC_TMRCTL0[23:0], SC_TMRCTL1[7:0], SC_TMRCTL2[7:0]) and re-counting.
If the counter decreases to “0” before the next START bit be detected, hardware will generate an interrupt to
CPU. The time-out value will be CNT (SC_TMRCTL0[23:0], SC_TMRCTL1[7:0], SC_TMRCTL2[7:0])+1.
Start
Start count when the
TMRx_SEN (SC_ALTCTL[7:5]) set to “1” or any START bit (TMRx_SEN
(SC_ALTCTL[7:5]) must be set) be detected
End
Stop count after TMRx_SEN (SC_ALTCTL[7:5]) set to “0”.
Table 6-32 Timer2/Timer1/Timer0 Operation Mode
Block Guard Time and Extended Guarg Time
6.14.5.5
Block guard time means the minimum bit length between the leading edges of two consecutive
characters between different transfer directions. This field indicates the counter for the bit length
of block guard time. According to ISO7816-3, in T = 0 mode, software must fill 15 (real block
guard time = 16.5) to this field; in T = 1 mode, software must fill 21 (real block guard time = 22.5)
to it.
In transmit direction, the smart card sends data to smart card host controller, first. After the period
is greater than BGT (SC_CTL[12:8]), the smart card host controller begin to send the data.
Block Guard Time
Guard Time
Last Receiver Data
Transmitter Data
Figure 6.14-10 Transmit Direction Block Guard Time Operation
Содержание ARM Cortex NuMicro M451 Series
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Страница 324: ...M451 May 4 2018 Page 324 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL Figure 6 4 18 Checksum Calculation Flow...
Страница 355: ...M451 May 4 2018 Page 355 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL 2 0 Reserved Reserved...
Страница 625: ...M451 May 4 2018 Page 625 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL 00 5 bits 01 6 bits 10 7 bits 11 8 bits...
Страница 721: ...M451 May 4 2018 Page 721 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL the SCL line 1 0 Reserved Reserved...
Страница 1001: ...M451 May 4 2018 Page 1001 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL LQFP 64L 10x10x1 4 mm footprint 2 0 mm 9 2...
Страница 1002: ...M451 May 4 2018 Page 1002 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL LQFP 64L 7x7x1 4 mm footprint 2 0 mm 9 3...
Страница 1003: ...M451 May 4 2018 Page 1003 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL LQFP 48L 7x7x1 4mm footprint 2 0mm 9 4...