Serial Interface Control Registers; Panasonic - Panasonic MN10285K User Manual

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5.7

Serial Interface Control Registers

Three registers control each of the serial interfaces: the serial port control register
(SCnCTR), the serial transmit/receive buffer (SCnTRB), and the serial port status
register (SCnSTR).
Table 5-3 Serial Interface Control Registers
Register
Serial I/F SC0CTR
0
SC0TRB
SC0STR
Serial I/F SC1CTR
1
SC1TRB
SC1STR
SC0CTR/SC1CTR: Serial Port n Control Register
Bit: 15 14 13 12
SCn SCn SCn SCn SCn
TEN REN BRE IIC PTL
Reset: 0 0 0 0
R/W: R/W R/W R/W R/W R/W
SC0CTR controls the operating conditions for the serial interface, includ-
ing the clock source, the parity bit, the protocol, and transmit/receive
enabling.
SCnTEN: Serial port n transmit enable
0: Disable
1: Enable
SCnREN: Serial port n receive enable
0: Disable
1: Enable
SCnBRE: Serial port n break transmission
0: Don't break
1: Break (Force SBOn to 0)
2
SCnIIC: Serial port n I
Do not change this bit during transmission or reception.
0: Output stop sequence upon 1-to-0 transition
1: Output start sequence upon 0-to-1 transition
SCnPTL: Serial port n protocol select
0: UART
1: Synchronous serial or I
SCnOD: Serial port n bit order
This bit must be set to 0 during 7-bit transmission.
0: LSB first
1: MSB first
140

Panasonic

Serial Interface Control Registers

Address R/W
x'00FD80' R/W Serial port 0 control register
x'00FD82' R/W Serial port 0 transmit/receive buffer
x'00FD83' R Serial port 0 status register
x'00FD88' R/W Serial port 1 control register
x'00FD8A' R/W Serial port 1 transmit/receive buffer
x'00FD8B' R Serial port 1 status register
11 10 9 8 7 6
SCn SCn SCn SCn
—
OD ICM LN PTY2
0 0 0 0 0 0
R R/W R/W R/W R/W
C start/stop sequence output
2
C
MN102H75K/F75K/85K/F85K LSI User Manual
Serial Interfaces
Description
x'00FD80'/x'00FD88'
5 4 3 2 1
SCn SCn SCn SCn SCn
—
PTY1 PTY0 SB S1 S0
0 0 0 0 0
R/W R/W R/W R R/W R/W
0
0