at83c5122 ATMEL Corporation, at83c5122 Datasheet - Page 136
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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)
- Current page: 136 of 213
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136
AT8xC5122/23
Table 78. Slave Address Mask Register for UART - SADEN (B9h)
Reset Value = 0000 0000b
Table 79. Slave Address Register for UART - SADDR (A9h)
Reset Value = 0000 0000b
Table 80. Serial Buffer Register for UART - SBUF (99h)
Reset Value = XXXX XXXXb
Table 81. Baud Rate Reload Register for the internal baud rate generator,
UART - BRL (9Ah)
Reset Value = 0000 0000b
Table 82. Baud Rate Control Register - BDRCON - (9Bh)
Reset Value = XXX0 0000b (Not bit addressable)
Number
7 - 5
Bit
4
3
2
1
0
7
7
7
7
7
-
Mnemonic Description
M0SRC
RBCK
TBCK
BRR
SPD
Bit
-
6
6
6
6
6
-
Reserved
The value read from this bit is indeterminate. Do not change these bits.
Baud Rate Run Control bit
Cleared to stop the internal Baud Rate Generator.
Set to start the internal Baud Rate Generator.
Transmission Baud rate Generator Selection bit for UART
Cleared to select Timer 1 for the Baud Rate Generator.
Set to select internal Baud Rate Generator.
Reception Baud Rate Generator Selection bit for UART
Cleared to select Timer 1 for the Baud Rate Generator.
Set to select internal Baud Rate Generator.
Baud Rate Speed Control bit for UART
Cleared to select the SLOW Baud Rate Generator.
Set to select the FAST Baud Rate Generator.
Baud Rate Source select bit in Mode 0 for UART
Cleared to select F
Set to select the internal Baud Rate Generator for UART in mode 0.
5
5
5
5
5
-
CK_SI
BRR
4
4
4
4
4
/6 as the Baud Rate Generator.
TBCK
3
3
3
3
3
RBCK
2
2
2
2
2
SPD
1
1
1
1
1
4202E–SCR–06/06
M0SRC
0
0
0
0
0
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