Table of Contents
x
Am186™CC/CH/CU Microcontrollers User’s Manual
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-3
11.5.1 Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-3
11.5.2 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-4
11.5.3 Hardware-Related Considerations . . . . . . . . . . . . . . . . . . . . . . 11-4
11.5.4 Software-Related Considerations . . . . . . . . . . . . . . . . . . . . . . 11-5
11.5.5 Comparison to Other Devices . . . . . . . . . . . . . . . . . . . . . . . . . 11-5
SERIAL COMMUNICATIONS OVERVIEW
System Design. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-2
12.2.1 Multiplexed Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-2
12.2.2 Sample Applications for the Am186CC Communications
Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-3
Serial Communications Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-6
12.3.1 Asynchronous and Synchronous Communications . . . . . . . . . 12-6
12.3.2 Hardware Flow Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-6
12.3.3 FIFOs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-7
12.3.4 Polled, Interrupt, and DMA Modes . . . . . . . . . . . . . . . . . . . . . . 12-7
12.3.5 Simplex, Half-Duplex, and Full-Duplex Systems . . . . . . . . . . . 12-8
ASYNCHRONOUS SERIAL PORTS (UARTS)
Transmit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-5
Receive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-6
Autobaud Mode (High-Speed UART Only) . . . . . . . 13-7
Data Overflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-8
Address Bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-9
Receive Status and Data . . . . . . . . . . . . . . . . . . . . 13-10
Extended Reads and Writes . . . . . . . . . . . . . . . . . 13-10
13.5.3 FIFOs (High-Speed UART Only) . . . . . . . . . . . . . . . . . . . . . . 13-11
Transmit FIFO . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-11
Receive FIFO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-12
13.5.4 CTS/RTR Hardware Flow Control . . . . . . . . . . . . . . . . . . . . . 13-13
13.5.5 Clock Sources and Baud Rate . . . . . . . . . . . . . . . . . . . . . . . . 13-14
Programming the Baud Rate . . . . . . . . . . . . . . . . . 13-15
Receiver Bit Sampling . . . . . . . . . . . . . . . . . . . . . . 13-16
13.5.6 Interrupt Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-19
13.5.7 Break Detection and Generation. . . . . . . . . . . . . . . . . . . . . . . 13-20
13.5.8 Receive Special-Character Matching
(High-Speed UART Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-21
13.5.9 Interface to General-Purpose DMA Channels . . . . . . . . . . . . 13-21
13.5.10 Hardware-Related Considerations . . . . . . . . . . . . . . . . . . . . . 13-22
13.5.11 Software-Related Considerations . . . . . . . . . . . . . . . . . . . . . 13-22
13.5.12 Comparison to Other Devices. . . . . . . . . . . . . . . . . . . . . . . . . 13-23
Содержание Am186 CC
Страница 1: ...Am186 CC CH CU Microcontrollers User s Manual Order 21914B...
Страница 4: ...iv Am186 CC CH CU Microcontrollers User s Manual...
Страница 18: ...Table of Contents xviii Am186 CC CH CU Microcontrollers User s Manual...
Страница 24: ...Introduction xxiv Am186 CC CH CU Microcontrollers User s Manual...
Страница 39: ...Architectural Overview Am186 CC CH CU Microcontrollers User s Manual 1 15 Figure 1 6 32 Channel Linecard CH CC...
Страница 40: ...Architectural Overview 1 16 Am186 CC CH CU Microcontrollers User s Manual...
Страница 86: ...System Overview 3 36 Am186 CC CH CU Microcontrollers User s Manual...
Страница 92: ...Emulator Support 4 6 Am186 CC CH CU Microcontrollers User s Manual...
Страница 112: ...DRAM Controller 6 8 Am186 CC CH CU Microcontrollers User s Manual...
Страница 134: ...Interrupts 7 22 Am186 CC CH CU Microcontrollers User s Manual...
Страница 186: ...Programmable I O Signals 9 8 Am186 CC CH CU Microcontrollers User s Manual...
Страница 200: ...Watchdog Timer 11 6 Am186 CC CH CU Microcontrollers User s Manual...
Страница 232: ...Asynchronous Serial Ports UARTs 13 24 Am186 CC CH CU Microcontrollers User s Manual...
Страница 242: ...Synchronous Serial Port SSI 14 10 Am186 CC CH CU Microcontrollers User s Manual...
Страница 264: ...High Level Data Link Control HDLC 15 22 Am186 CC CH CU Microcontrollers User s Manual...
Страница 332: ...Universal Serial Bus USB 18 34 Am186 CC CH CU Microcontrollers User s Manual...
Страница 348: ...Register Summary A 16 Am186 CC CH CU Microcontrollers User s Manual...
Страница 376: ...Index Index 18 Am186 CC CH CU Microcontrollers User s Manual...