AT83EC5123 ATMEL Corporation, AT83EC5123 Datasheet - Page 52

• Manufacturer Part Number: AT83EC5123
• Description: (AT8xx512x) Smart Card Reader ICs
• Manufacturer: ATMEL Corporation

52
AT8xC5122/23
Table 49. Smart Card Transmit Guard Time Register 0 - SCGT0 (S:B4h, SCRS=1)
Reset Value = 0000 1100b
Table 50. Smart Card Transmit Guard Time Register 1 - SCGT1 (S:B5h, SCRS=1)
Reset Value = XXXX XXX0b
Table 51. Smart Card Character/Block Wait Time Register 3
SCWT3 (S:C1h, SCRS=0)
Reset Value = 0000 0000b
Number
Number
Number
WT31
7 - 0
7 - 1
7 - 0
GT7
Bit
Bit
Bit
7
7
7
0
-
Mnemonic Description
Mnemonic Description
Mnemonic Description
WT[31:24]
GT[7:0]
WT30
GT6
GT8
Bit
Bit
Bit
6
6
6
-
-
Transmit Guard Time LSB
The minimum time between two consecutive start bits in transmit mode is
GT[8:0] * ETU.
According to ISO 7816, GT can be set between 11 and 266 (11 to 254+12 ETU).
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 49).
Wait Time Byte3
Used together with WT[23:0] in registers SCWT2,SCWT1, SCWT0 (see Table
52).
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
-
4202B–SCR–07/03
WT24
GT0
GT8
0
0
0