MAS9118 Просмотр технического описания (PDF) - Micro Analog Systems Oy
Номер в каталоге
Компоненты Описание
Список матч
MAS9118 Datasheet PDF : 4 Pages
| |||
DAEV9118.001
29 January, 2002
48,&. 67$57
1
Copy files from the disk to the desired directory of a PC
2
Restart the PC in MS-DOS mode. 1RWH WKDW '266KHOO ZLQGRZ LV QRW HQRXJK
3
Connect the data bus between the two evaluation boards (PC adapter and buzzer boards)
4
Connect buzzer or loudspeaker to the JP1 of the buzzer board, see figure 1
5
Connect 7.5 V power supply to the buzzer board. Adjust current limiter to 600 mA if possible
6
Connect adapter board (PCB with 25-pin D-type connector) to the parallel port of the PC
7
Run the evaluation kit program by typing: buzzer –p XX –m YY (XX is the number of the parallel port, YY
is the melody number)
Example: buzzer –p 1 –m 0
8
You should hear the signal from the buzzer or the loudspeaker
'(7$,/(' '(6&5,37,21
3DUWLWLRQLQJ RI WKH KDUGZDUH
The hardware is partitioned into two PCBs in order
to provide robust data transfer from a PC to
MAS9118 even if the distance between the two is
several meters. Most of the components on
evaluation board are used for the data transfer from
the PC to MAS9118.
&ORFN JHQHUDWLRQ
The time domain is synchronized to the crystal
oscillator frequency (FRVF) of 8.0 MHz. Other clock
frequencies are generated from this frequency as
follows:
Fosc
FMCLK= 8 = 1000 kHz
(1)
Fosc
FXCS= 128 = 62.5 kHz
(2)
Fosc
FCCLK= 8 = 1000 kHz
(3)
-XPSHUV
The PCB including buzzer (buzzer board) adjusts
supply and signal voltages of MAS9118. It has five
jumpers, see figure 1.
X3 is used for connecting 5 V for the interface logic
(default position is ON).
X5 is used for connecting the interface voltage level
to MAS9118 (default position is ON). The voltage is
normally 1.8 V and can be adjusted by R2 trimmer.
X4 is used for connecting the operating voltage to
MAS9118 (default position is ON). The voltage is
normally 3.6 V and can be adjusted by R1 trimmer.
1RWH WKDW WKLV YROWDJH DIIHFWV WKH EX]]HU DQG
ORXGVSHDNHU YROXPH
X6 is used for generating reset signal to MAS9118
(default position is OFF). Since MAS9118 has
power-on-reset this jumper can normally be off.
JP1 is used for connecting a buzzer, a loudspeaker
or a measurement instrument to the output pins of
MAS9118 (OUTP, OUTN).
6RIWZDUH
The data is read from the PC at the rate of FXCS
(62.5 kHz). MS-DOS mode is required in order to
quarantee continuous data flow.
Note that the buzzer.exe program will disable the PC
system clock interrupt and stop the PC system time.
Therefore, it is recommended to boot the PC after
using the program in order to retrieve the right
system time.
The help of the buzzer.exe program is shown each
time the program is started.
The melodies are started by typing
EX]]HU S SRUW ±P PHORG\
Zhere #port is the parallel port of the PC used for
the data transfer (0…3) and
PHORG\ is the number of the pre-programmed
melody (0…5).
2 (4)
Share Link: 