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MSM66591/ML66592 User's Manual
Chapter 15 Serial Port Functions
<Synchronous Normal Slave Mode (SCI1 only)>
In slave mode, the transmit clock is input externally. The edge is detected synchronizing
with a CLK to generate ST1CLK (refer to Figure 15-32).
The transmit circuit controls the transfer of the transmit data synchronizing with
ST1CLK.
The transmit operation is started with a signal to write transmit data to S1BUF
(WS1BUF: write instruction to S1BUF. For example, a signal that is output if "STB A,
S1BUF" is executed) as the trigger.
If WS1BUF is generated, a transmit start signal (LST1SF) is generated after 1 CLK
(master clock).
The content of S1BUF is transferred to the transmit register at the fall of LST1SF.
At this time, the transmit operation starts, and the ST1FREE signal that indicates
transmitting is set to "L" level.
Then a transmit interrupt (TX1READY) request is generated synchronizing with the
signal (M1S1) that indicates the beginning of an instruction execution, and the interrupt
request flag (QSCI1) is set to "1".
When ST1FREE becomes "L" level, at the rising edge of next CLK, bit 0 (LSB first) is
output from the TXD1 pin. Bit 1 of the transmit data is output from the TXD1 pin at the
rising edge of next CLK after the fall of ST1CLK.
Hereafter, transmit data and a parity bit are added synchronizing with TXC1 (ST1CLK),
according to the specification of ST1CON, and a 1 frame transmission ends.
TXD1 changes after the fall of ST1CLK, that detects the edge of TXC1, which is input
externally.
In this way the receive side fetches TXD1 at the rise of TXC1.
<Synchronous Multiprocessor Communication Slave Mode (SCI1 only)>
In synchronous multiprocessor communication slave mode, the transmit is controlled by
the same timing as synchronous normal slave mode. The differemces are shown
below.
• An MPC bit ("1": address transmitted; "0": data transmitted) is added between the end
of data (MSB bit) and the parity bit.
[Note] SCI0, SCI2, SCI3, and SCI4 do not have synchronous mode.
Содержание ML66592
Страница 1: ...MSM66591 ML66592 User s Manual CMOS 16 bit microcontroller FEUL66591 66592 01 Issue Date Mar 4 2002 ...
Страница 15: ...Contents 12 ...
Страница 17: ......
Страница 18: ...Overview Chapter 1 1 ...
Страница 19: ......
Страница 30: ...Description of Pins Chapter 2 2 ...
Страница 31: ......
Страница 44: ...CPU Architecture Chapter 3 3 ...
Страница 45: ......
Страница 101: ...3 56 MSM66591 ML66592User sManual Chapter 3 CPU Architecture ...
Страница 102: ...CPU Control Functions Chapter 4 4 ...
Страница 103: ......
Страница 111: ...4 8 MSM66591 ML66592User sManual Chapter 4 CPU Control Functions ...
Страница 112: ...Memory Control Functions Chapter 5 5 ...
Страница 113: ......
Страница 117: ...5 4 MSM66591 ML66592User sManual Chapter 5 Memory Control Functions ...
Страница 118: ...Port Functions Chapter 6 6 ...
Страница 119: ......
Страница 152: ...Output Pin Control Pin OE Chapter 7 7 ...
Страница 153: ......
Страница 155: ...7 2 MSM66591 ML66592User sManual Chapter 7 Output Pin Control Pin OE ...
Страница 156: ...Clock Generation Circuit Chapter 8 8 ...
Страница 157: ......
Страница 160: ...Time Base Counter TBC Chapter 9 9 ...
Страница 161: ......
Страница 164: ...Watchdog Timer WDT Chapter 10 10 ...
Страница 165: ......
Страница 170: ...Flexible Timer FTM Chapter 11 11 11 ...
Страница 171: ......
Страница 213: ...11 42 MSM66591 ML66592User sManual Chapter 11 Flexible Timer FTM ...
Страница 214: ...General Purpose 8 Bit Timer Function Chapter 12 12 ...
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Страница 223: ...12 8 MSM66591 ML66592User sManual Chapter 12 General Purpose 8 Bit Timer Function ...
Страница 224: ...PWM Functions Chapter 13 13 ...
Страница 225: ......
Страница 244: ...Baud Rate Generator Functions Chapter 14 14 ...
Страница 245: ......
Страница 263: ...14 18 MSM66591 ML66592User sManual Chapter 14 Baud Rate Generator Functions ...
Страница 264: ...Serial Port Functions Chapter 15 15 ...
Страница 265: ......
Страница 348: ...A D Converter Functions Chapter 16 16 ...
Страница 349: ......
Страница 381: ...16 32 MSM66591 ML66592User sManual Chapter 16 A D Converter Functions ...
Страница 382: ...Transition Detector Functions Chapter 17 17 ...
Страница 383: ......
Страница 387: ...17 4 MSM66591 ML66592User sManual Chapter 17 Transition Detector Functions ...
Страница 388: ...Peripheral Functions Chapter 18 18 ...
Страница 389: ......
Страница 392: ...External Interrupt Request Function Chapter 19 19 ...
Страница 393: ......
Страница 396: ...Interrupt Request Processing Function Chapter 20 20 ...
Страница 397: ......
Страница 407: ...20 10 MSM66591 ML66592User sManual Chapter 20 Interrupt Request Processing Function ...
Страница 408: ...Bus Port Functions Chapter 21 21 ...
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Страница 413: ...21 4 MSM66591 ML66592User sManual Chapter 21 Bus Port Functions ...
Страница 414: ...Expansion Port Chapter 22 22 ...
Страница 415: ......
Страница 420: ...Serial Port with FIFO SCI5 Chapter 23 23 ...
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Страница 431: ...23 10 MSM66591 ML66592User sManual Chapter 23 Serial Port with FIFO SCI5 ...
Страница 432: ...RAM Monitor Function Chapter 24 24 ...
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Страница 441: ...24 8 MSM66591 ML66592User sManual Chapter 24 RAM Monitor Function ...
Страница 442: ...25 Electrical Characteristics Chapter 25 ...
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Страница 458: ...Package Dimensions Chapter 26 26 ...
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Страница 461: ...26 2 MSM66591 ML66592User sManual Chapter 26 Package Dimensions ...
Страница 462: ...Revision History Chapter 27 27 ...
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Страница 465: ...27 2 MSM66591 ML66592User sManual Chapter 27 Revision History ...