Architectural Overview
1-2
Am186™CC/CH/CU Microcontrollers User’s Manual
■
System peripherals
– Interrupt controller (36 maskable interrupts)
– Four general-purpose DMA channels
– 48 programmable I/O signals
– Three programmable 16-bit timers
– Hardware watchdog timer
■
Memory and Peripheral Interface
– Integrated DRAM controller
– Glueless interface to RAM/ROM/Flash memory (40-ns Flash memory required for
zero-wait-state operation at 50 MHz)
– Fourteen chip selects (6 memory, 8 peripheral)
– External bus mastering support
– Multiplexed and nonmultiplexed address/data bus
– Programmable bus sizing
– 8-bit boot option
1.2.1
Am186CH HDLC Microcontroller
The Am186CH HDLC microcontroller is a cost-reduced derivative of the Am186CC
microcontroller that is targeted towards cost-sensitive applications such as linecards and
digital phones. The Am186CH HDLC microcontroller is pin-compatible with the Am186CC
microcontroller and offers many of the same features, yet the Am186CH HDLC
microcontroller provides a cost-effective solution for communications devices that require
fewer HDLC channels and do not need GCI or USB. It includes the following distinctive
characteristics:
■
Serial communications peripherals
– Two High-level Data Link Control (HDLC) channels
– Four SmartDMA channels to support HDLC
– Two independent Time Slot Assigners (TSAs)
– Physical interface for HDLC channels can be raw DCE or PCM Highway
– High-speed UART with autobaud
– UART
– Synchronous serial interface (SSI)
■
System peripherals
– Interrupt controller (31 maskable interrupts)
– Four general-purpose DMA channels
– 48 programmable I/O signals
– Three programmable 16-bit timers
– Hardware watchdog timer
CH
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...