Intel 80C196NU Manual Do Utilizador
8-10
8XC196NP, 80C196NU USER’S MANUAL
1:0
M1:0
Mode Selection
These bits select the communications mode.
M1
M0
0
0
mode 0
0
1
mode 1
1
0
mode 2
1
1
mode 3
SP_CON (Continued)
Address:
Reset State:
1FBBH
00H
The serial port control (SP_CON) register selects the communications mode and enables or disables
the receiver, parity checking, and nine-bit data transmission. For the 80C196NU, it also enables or
disables the divide-by-two prescaler.
the receiver, parity checking, and nine-bit data transmission. For the 80C196NU, it also enables or
disables the divide-by-two prescaler.
7
0
8XC196NP
—
—
PAR
TB8
REN
PEN
M1
M0
7
0
80C196NU
—
PRS
PAR
TB8
REN
PEN
M1
M0
Bit
Number
Bit
Mnemonic
Function
†
This bit is reserved on the 8XC196NP. For compatibility with future devices, write zero to this bit.
Figure 8-6. Serial Port Control (SP_CON) Register (Continued)