at83c5122 ATMEL Corporation, at83c5122 Datasheet - Page 87
at83c5122
Manufacturer Part Number
at83c5122
Description
At83c5123 C51 Microcontroller With Usb And Smart Card Reader Interfaces
Manufacturer
ATMEL Corporation
Datasheet
1.AT83C5122.pdf
(213 pages)
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Table 56. Smart Card Character/Block Waiting Time Register 2
SCWT2 (S:B6h, SCRS=0)
Reset Value = 0000 0000b
Table 57. Smart Card Character/Block Waiting Time Register 1
SCWT1 (S:B5h, SCRS=0)
Reset Value = 0010 0101b
Table 58. Smart Card Character/Block Waiting Time Register 0
SCWT0 (S:B4h, SCRS=0)
Reset Value = 1000 0000b
4202E–SCR–06/06
Bit Number
Bit Number
Bit Number
WT23
WT15
7 - 0
7 - 0
WT7
7 - 0
7
7
7
Bit Mnemonic
Bit Mnemonic
Bit Mnemonic
WT[23:16]
WT[15:8]
WT[7:0]
WT22
WT14
WT6
6
6
6
Description
Waiting Time Byte2
Used together with WT[31:24] and WT[15:0] in registers SCWT3,SCWT1, SCWT0 (see Table 58).
Description
Waiting Time Byte 1
Used together with WT[31:16] and WT[7:0] in registers SCWT3,SCWT2, SCWT0 (see Table 55).
Description
Waiting Time Byte 0
WT[31:0] is the reload value of the Waiting Time Counter (WTC).
The WTC is a general-purpose timer. It is using the ETU clock and is controlled by the WTEN bit (see Table 44 on
page 79 and Section “Waiting Time (WT) Counter”, page 69).
When UART bit of Registers is set, the WTC is automatically reloaded at each start bit of the UART. It is used to
check the maximum time between to consecutive start bits.
WT21
WT13
WT5
5
5
5
WT20
WT12
WT4
4
4
4
WT19
WT11
WT3
3
3
3
WT18
WT10
WT2
2
2
2
AT8xC5122/23
WT17
WT9
WT1
1
1
1
WT16
WT8
WT0
0
0
0
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