Unformatted text preview: ECE 2801 — Foundations of Embedded Systems
Bonus Quiz #6 Name: _Solutions ECE Box #2 1) Explain the difference between a parallel interface (or parallel bus) and a serial
interface (or serial bus). In a parallel interface, each bit in the data being transferred has its own electrical
connection and all bits are transferred simultaneously. In a serial interface, there are usually only I or 2 connections (one for each direction) for sending data bits and bits are
sent sequentially over a single connection. 2) The biggest difference between synchronous serial interfaces, like SP1, and non—
synchronous (asynchronous) serial interfaces is a) Shared ground and higher data rate for asynchronous interfaces
b) Shared clock forcing lower data rates for SP1 Q) Shared clock allowing much higher data rates for SP1
(1) No real difference. All serial interfaces are about the same. 3) Sketch a block diagram of an SP1 interface between a single master (i.e. MSP430) and
a single slave peripheral. 4) The value 1024 is sent to the 12-bit DAC shown below. The output voltage Vout will
be @t 0.75 V b) 3 V 0) 1.5V (1) can not be determined *3t/ 3‘:wa 1235+ Vao'l'
En DAC H\ ...
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- Spring '08