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MSM66591/ML66592 User's Manual
Chapter 15 Serial Port Functions
15.2.2 Control Registers for SCI1
[1]
SCI1 Transmit Control Register (ST1CON)
ST1CON is a 6-bit register that controls SCI1 transmit operations.
At reset (when the
RES
signal is input, the BRK instruction is executed, the watchdog
timer is overflown, or an operation code trap is generated), ST1CON becomes 88H, the
SCI1 transmit operation is in UART normal mode, at 8-bit data length, 2 stop bits, and
no parity.
When changing the contents of ST1CON, do so after transmission is completed. If
ST1CON is changed before a transmission is completed, the current and future trans-
mission is not normally performed.
Figure 15-9 shows the configuration of ST1CON.
<Description of Each Bit>
• ST1MD0, 1 (bits 0 , 1)
These bits specify the transmit operation mode of SCI1.
• ST1MPC (bit 2)
If SCI1 transmits in UART/synchronous multiprocessor communication mode, bit 2
(ST1MPC) specifies which is transmitted, data or an address. The transmit data
length is fixed at 8 bits. If bit 2 (ST1MPC) is "0", data is transmitted, and if "1", an
address is transmitted.
• ST1STB/ST1MST (bit 4)
The function of bit 4 differs depending on the operation mode specified by bit 1 and
0. When SCI1 transmits in UART mode, bit 4 (ST1STB) specifies the stop bit of SCI1
either as a 1 stop bit or 2 stop bits. If bit 4 (ST1STB) is "0", SCI1 transmits at 2 stop
bits, and if "1", SCI1 transmits at 1 stop bit. When SCI1 transmits in synchronous
mode, bit 4 (ST1MST) selects slave mode/master mode. If bit 4 (ST1MST) is "0",
slave mode is selected, and if "1", master mode is selected.
• ST1PEN (bit 5)
This bit specifies whether a parity bit is included when SCI1 transmits. If this bit is
"0", SCI1 transmits without a parity bit, and if "1", SCI1 transmits with a parity bit.
• ST1EVN (bit 6)
This bit specifies the logic of a parity bit when SCI1 transmits. If this bit is "0", SCI1
transmits at odd parity, and if "1", SCI1 transmits at even parity.
Summary of Contents for MSM66591
Page 15: ...Contents 12...
Page 17: ......
Page 18: ...Overview Chapter 1 1...
Page 19: ......
Page 30: ...Description of Pins Chapter 2 2...
Page 31: ......
Page 44: ...CPU Architecture Chapter 3 3...
Page 45: ......
Page 101: ...3 56 MSM66591 ML66592User sManual Chapter 3 CPU Architecture...
Page 102: ...CPU Control Functions Chapter 4 4...
Page 103: ......
Page 111: ...4 8 MSM66591 ML66592User sManual Chapter 4 CPU Control Functions...
Page 112: ...Memory Control Functions Chapter 5 5...
Page 113: ......
Page 117: ...5 4 MSM66591 ML66592User sManual Chapter 5 Memory Control Functions...
Page 118: ...Port Functions Chapter 6 6...
Page 119: ......
Page 152: ...Output Pin Control Pin OE Chapter 7 7...
Page 153: ......
Page 155: ...7 2 MSM66591 ML66592User sManual Chapter 7 Output Pin Control Pin OE...
Page 156: ...Clock Generation Circuit Chapter 8 8...
Page 157: ......
Page 160: ...Time Base Counter TBC Chapter 9 9...
Page 161: ......
Page 164: ...Watchdog Timer WDT Chapter 10 10...
Page 165: ......
Page 170: ...Flexible Timer FTM Chapter 11 11 11...
Page 171: ......
Page 213: ...11 42 MSM66591 ML66592User sManual Chapter 11 Flexible Timer FTM...
Page 214: ...General Purpose 8 Bit Timer Function Chapter 12 12...
Page 215: ......
Page 223: ...12 8 MSM66591 ML66592User sManual Chapter 12 General Purpose 8 Bit Timer Function...
Page 224: ...PWM Functions Chapter 13 13...
Page 225: ......
Page 244: ...Baud Rate Generator Functions Chapter 14 14...
Page 245: ......
Page 263: ...14 18 MSM66591 ML66592User sManual Chapter 14 Baud Rate Generator Functions...
Page 264: ...Serial Port Functions Chapter 15 15...
Page 265: ......
Page 348: ...A D Converter Functions Chapter 16 16...
Page 349: ......
Page 381: ...16 32 MSM66591 ML66592User sManual Chapter 16 A D Converter Functions...
Page 382: ...Transition Detector Functions Chapter 17 17...
Page 383: ......
Page 387: ...17 4 MSM66591 ML66592User sManual Chapter 17 Transition Detector Functions...
Page 388: ...Peripheral Functions Chapter 18 18...
Page 389: ......
Page 392: ...External Interrupt Request Function Chapter 19 19...
Page 393: ......
Page 396: ...Interrupt Request Processing Function Chapter 20 20...
Page 397: ......
Page 407: ...20 10 MSM66591 ML66592User sManual Chapter 20 Interrupt Request Processing Function...
Page 408: ...Bus Port Functions Chapter 21 21...
Page 409: ......
Page 413: ...21 4 MSM66591 ML66592User sManual Chapter 21 Bus Port Functions...
Page 414: ...Expansion Port Chapter 22 22...
Page 415: ......
Page 420: ...Serial Port with FIFO SCI5 Chapter 23 23...
Page 421: ......
Page 431: ...23 10 MSM66591 ML66592User sManual Chapter 23 Serial Port with FIFO SCI5...
Page 432: ...RAM Monitor Function Chapter 24 24...
Page 433: ......
Page 441: ...24 8 MSM66591 ML66592User sManual Chapter 24 RAM Monitor Function...
Page 442: ...25 Electrical Characteristics Chapter 25...
Page 443: ......
Page 458: ...Package Dimensions Chapter 26 26...
Page 459: ......
Page 461: ...26 2 MSM66591 ML66592User sManual Chapter 26 Package Dimensions...
Page 462: ...Revision History Chapter 27 27...
Page 463: ......
Page 465: ...27 2 MSM66591 ML66592User sManual Chapter 27 Revision History...