71m6521be Maxim Integrated Products, Inc., 71m6521be Datasheet - Page 24

• Manufacturer Part Number: 71m6521be
• Description: Energy Meter Ic
• Manufacturer: Maxim Integrated Products, Inc.

Page: 24 of 97
S0CON.7
S0CON.6
S0CON.5
S0CON.4
S0CON.3
S0CON.2
S0CON.1
S0CON.0
S1CON.7
S1CON.5
S1CON.4
S1CON.3
S1CON.2
S1CON.1
S1CON.0
Bit
Bit
Symbol
Symbol
REN0
REN1
SM20
RB80
SM21
RB81
TB80
TB81
SM0
SM1
RI0
RI1
TI0
SM
TI1
Function
These two bits set the UART0 mode:
Enables the inter-processor communication feature.
If set, enables serial reception. Cleared by software to disable reception.
The 9
MPU, depending on the function it performs (parity check, multiprocessor
communication etc.)
In Modes 2 and 3 it is the 9
RB80 is the stop bit. In Mode 0 this bit is not used. Must be cleared by
software
Transmit interrupt flag, set by hardware after completion of a serial
transfer. Must be cleared by software.
Receive interrupt flag, set by hardware after completion of a serial
reception. Must be cleared by software
Function
Sets the baud rate for UART1
Enables the inter-processor communication feature.
If set, enables serial reception. Cleared by software to disable reception.
The 9
depending on the function it performs (parity check, multiprocessor
communication etc.)
In Modes A and B, it is the 9
RB81 is the stop bit. Must be cleared by software
Transmit interrupt flag, set by hardware after completion of a serial
transfer. Must be cleared by software.
Receive interrupt flag, set by hardware after completion of a serial
reception. Must be cleared by software
© 2005-2008 TERIDIAN Semiconductor Corporation
SM
Mode
0
1
th
th
0
1
2
3
transmitted data bit in Modes 2 and 3. Set or cleared by the
transmitted data bit in Mode A. Set or cleared by the MPU,
Table 16: The S0CON Bit Functions
Table 17: The S1CON Bit Functions
Mode
A
B
Description
8-bit UART
9-bit UART
9-bit UART
N/A
Description
th
9-bit UART
8-bit UART
th
data bit received. In Mode 1, if SM20 is 0,
data bit received. In Mode B, if SM21 is 0,
SM0
0
0
1
1
Baud Rate
variable
variable
Energy Meter IC
SM1
0
1
0
1
71M6521BE
DATA SHEET
JANUARY 2008
V1.0