DMA Controller
8-8
Am186™CC/CH/CU Microcontrollers User’s Manual
Table 8-3
Am186CC Communications Controller DMA Channel Use
DMA Channel
Associated Peripheral
General-Purpose DMA Channels 0–3
Memory-to-memory transfers (note I/O space
can be used in addition to memory space),
Timer 2, external peripherals (via the DRQ
signals), internal UART or High-Speed UART, or
any USB data endpoint (A–D) configured in
either direction
SmartDMA Pair 0 Receive Channel
HDLC A receiver
SmartDMA Pair 0 Transmit Channel
HDLC A transmitter
SmartDMA Pair 1 Receive Channel
HDLC B receiver
SmartDMA Pair 1 Transmit Channel
HDLC B transmitter
SmartDMA Pair 2 Transmit Channel
HDLC C transmitter or USB data endpoint B if
configured as a USB IN endpoint
SmartDMA Pair 2 Receive Channel
HDLC C receiver or USB data endpoint A if
configured as a USB OUT endpoint
1
Notes:
1. For SmartDMA channels 2 and 3, the transmit and receive cannot be assigned to different pe-
ripherals. For example, if SmartDMA Channel 2 receive is assigned to USB data endpoint A, then
SmartDMA Channel 2 transmit can be used for USB data endpoint B, but cannot be used with the
HDLC controller.
SmartDMA Pair 3 Transmit Channel
HDLC D transmitter or USB data endpoint D if
configured as a USB IN endpoint
SmartDMA Pair 3 Receive Channel
HDLC D receiver or USB data endpoint C if
configured as a USB OUT endpoint
Table 8-4
Am186CH HDLC Microcontroller DMA Channel Use
DMA Channel
Associated Peripheral
General-Purpose DMA Channels 0–3
Memory-to-memory transfers (note I/O space
can be used in addition to memory space),
Timer 2, external peripherals (via the DRQ
signals), internal UART or High-Speed UART
SmartDMA Pair 0 Receive Channel
HDLC A receiver
SmartDMA Pair 0 Transmit Channel
HDLC A transmitter
SmartDMA Pair 1 Receive Channel
HDLC B receiver
SmartDMA Pair 1 Transmit Channel
HDLC B transmitter
CC
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...