System Overview
Am186™CC/CH/CU Microcontrollers User’s Manual
3-9
Table 3-6
Signal Descriptions Table Definitions
Term
Definition
General Terms
[ ]
Indicates the pin alternate function; a pin defaults to the signal named without the
brackets.
{ }
Indicates the reset configuration pin (pinstrap).
pin
Refers to the physical wire.
reset
An
external or power-on reset is caused by asserting RES. An internal reset is initiated
by the watchdog timer. A
system reset is one that resets the microcontroller (the CPU
plus the internal peripherals) as well as any external peripherals connected to RESOUT.
An external reset always causes a system reset; an internal reset can optionally cause
a system reset.
signal
Refers to the electrical signal that flows across a pin.
SIGNAL
A line over a signal name indicates that the signal is active Low; a signal name without
a line is active High.
Signal Types
B
Bidirectional
H
High
LS
Programmable to hold last state of pin
O
Totem pole output
OD
Open drain output
OD-O
Open drain output or totem pole output
PD
Internal pulldown resistor
PU
Internal pullup resistor
STI
Schmitt trigger input
STI-OD
Schmitt trigger input or open drain output
TS
Three-state output
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...