AT85C5122D-SISUM Atmel, AT85C5122D-SISUM Datasheet - Page 86
AT85C5122D-SISUM
Manufacturer Part Number
AT85C5122D-SISUM
Description
RFID Modules & Development Tools 3-5.5V Smart Card Reader
Manufacturer
Atmel
Datasheet
1.AT85C5122D-SISUM.pdf
(213 pages)
Specifications of AT85C5122D-SISUM
Product
RFID Readers
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Table 53. Smart Card Transmit Guard Time Register 0 - SCGT0 (S:B4h, SCRS=1)
Reset Value = 0000 1100b
Table 54. Smart Card Transmit Guard Time Register 1 - SCGT1 (S:B5h, SCRS=1)
Reset Value = XXXX XXX0b
Table 55. Smart Card Character/Block Waiting Time Register 3
SCWT3 (S:C1h, SCRS=0)
Reset Value = 0000 0000b
86
Bit Number
Bit Number
Bit Number
WT31
7 - 0
7 - 1
7 - 0
GT7
7
7
7
0
-
AT8xC5122/23
Bit Mnemonic
Bit Mnemonic
Bit Mnemonic
WT[31:24]
GT[7:0]
WT30
GT6
GT8
6
6
6
-
-
Description
Transmit Guard Time LSB
The minimum time between two consecutive start bits in transmit mode is GT[8:0] * ETU. This is equal to ISO IEC
Guard Time +10 (see Guard Time Counter description.
According to ISO IEC 7816,the time between 2 consecutive leading edge start bits can be set between 11 and
266 (11 to 254+12 ETUs).
Description
Reserved
The value read from these bits is indeterminate. Do not change these bits.
Transmit Guard Time MSB
Used together with the Transmit Guard Time LSB in SCGT0 register (Table 53).
Description
Waiting Time Byte3
Used together with WT[23:0] in registers SCWT2,SCWT1, SCWT0 (see Table 56).
WT29
GT5
5
5
5
-
WT28
GT4
4
4
4
-
WT27
GT3
3
3
3
-
WT26
GT2
2
2
2
-
WT25
GT1
1
1
1
-
4202E–SCR–06/06
WT24
GT0
GT8
0
0
0
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