ADDER X-SC Manuale Utente Scaricare il pdf (Pagina 18)

18 CHAPTER 1. INTRODUCTION TO THE ALLIANCE TOOLS

Table 1.2: Set of types used in the VHDL subset of Alliance.

Type Description

bit

The standard bit type: ’0’ or ’1’

bit vector

Array of bits

mux bit

Resolved subtype of bit using the mux resolution function. This function checks

that only one driver is actually connected to a signal. The eﬀective value of the

signal is the value of the active driver. If all drivers are disconnected, the value of

the signal is ’1’ (pullup). A signal of type mux bit must be declared with the kind

bus.

mux vector

Array of mux bit

wor bit

Resolved subtype of bit using the wor resolution function. This function allows a

signal be driven by more than one drive r. All active drivers have to drive the same

value. The eﬀective value of the s ignal is the value of active drivers. If all drivers

are disconnected, the value of the signal is ’1’ (pull up). A signal of type wor bit

must be declared with the kind bus.

wor vector

Array of wor bit

reg bit

Resolved subtype of bit using the reg resolution function. This function checks that

only one driver is actually connected to a signal. The eﬀective value of the signal

is the value of the active driver. A signal of type reg bit must be declared with the

kind register (which makes the signal keep its previous value when all drivers are

disconnected).

reg vector

Array of reg bit

is described using port mapping. We can do explicit and implicit port mapping. However unconnected ports

are not allowed. Moreover, only the concatenation operator & can be used in port mapping. Let us see an

example using the multiplexer circuit of the previous section. For this we will use the following leaf AND gate.

-- AND gate entity andg is port(a : in bit;

b : in bit;

q : out bit;

vdd : in bit;

vss : in bit); end andg;

architecture vbe of andg is begin

q <= (a AND b); end vbe;

And, the following leaf OR gate design.

-- OR gate entity org is port(a: in bit;

b: in bit;

q: out bit;

vdd: in bit;

vss: in bit); end org;

architecture vbe of org is begin

q <= (a OR b); end vbe;

And the following leaf NOT gate design.

-- inverter (NOT) gate entity invg i s port(a : in bit;

x : out bit;

vdd : in bit;

vss : in bit); end invg;

architecture vbe of invg is begin

x <= NOT(a); end vbe;

We will combine these gates as shown in Figure 1.6. The corresponding structural VHDL ﬁle is as follows.

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 86 87

Commenti su questo manuale

Nessun commento

Doro 820 Mini Especificaciones (68 paginas)

Marca: Doro | Categoria: Smartphones | Tamaño: 0.82 MB |

Tabla de contenidos

Doro Liberto

820 Mini

Contents

Get started

Insert the SIM card

Insert the memory card

Charge the phone

Turn the phone on and off

Screen lock

Startup guide

Assistive functions

Get to know your phone

Handle your phone

Use the phone keys

Home screen

Home screen shortcuts

Lock screen

Application list

Status and notifications bar

Enter text

Screenshot

Phone settings

Change PIN code

Wireless networks (Wi-Fi)

Software update

Battery performance

Dock mode

My Doro Manager

Download the application

820 Mini user

Doro Selection

Make a call

Make a call from contacts

Receive a call

Call options

Call log

Voicemail

SOS calls

Contacts

Add new contact

Import contacts

ICE (In Case of Emergency)

Messages

Text and picture messages

Picture messages settings

Set up existing email address

Create and send email message

Inbox/Sent/Draft

Synchronisation

Download attachments

Take a picture

Record a video

Settings

Assistance button

Connectivity

Network services and costs

Data connectivity

Bluetooth

Network setup

Flight mode

Internet (web browser)

Use the web browser

Additional applications

Google apps

FM Radio

Calendar

Calculator

Sound recorder

Code safe

Reset the phone

Status icons

Safety instructions

Operating environment

Medical units

Areas with explosion risk

Li-ion battery

Protect your hearing

Emergency calls

Vehicles

Care and maintenance

Warranty

Specifications

Hearing aid

Declaration of Conformity

FCC notice

RF exposure information (SAR)

820 Mini (1011,1021,1035)

FCC ID: WS5DORO820M

Más productos y manuales para Los teléfonos inteligentes Doro

Modelos	Tipo de documento
Ninguno

ADDER X-SC Manuale Utente Pagina 18

Commenti su questo manuale

Doro 820 Mini manuales

Doro 820 Mini Especificaciones (68 paginas)

Tabla de contenidos

Más productos y manuales para Los teléfonos inteligentes Doro