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ic02
Joined: 12 Mar 2003
Posts: 1
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 09 May 2003 5:05 Who know a IC which can be read by DSP and output to RS232? |
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Who know a IC which can be read by DSP and output to RS232?
Please tell me the type of the IC!
Last edited by ic02 on 10 May 2003 8:23; edited 1 time in total |
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mr_ghz
Joined: 01 Apr 2002
Posts: 294
Helped: 2
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| 09 May 2003 6:02 |
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Hi ic02,
what do you want to do? Add a serial port to yout DSP? In this case, you
can use a UART like the 16C550 (National, includeing FIFO). This chip has
a 8bit databus and include 8 registers that you can access from your DSP.
The other side you need a digital to RS-232 pegelconverter like a MAX232.
The connection of the UART to the DSP depends heavily on the DSP you
are using. Mostly you have to insert wait states. Which device do you use?
Greets
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ic02
Joined: 12 Mar 2003
Posts: 1
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| 09 May 2003 16:03 To:mr_ghz |
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I have already found the IC ST16C1450，but I can't buy it in china!
Can you suggest me the other IC which has the same function of 16C550?
Last edited by ic02 on 10 May 2003 8:26; edited 1 time in total |
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mr_ghz
Joined: 01 Apr 2002
Posts: 294
Helped: 2
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| 09 May 2003 16:45 |
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Hi ic02
I know following types:
16450 or 16C450 from National, ST, ... is a UART without FIFO buffer
16550 or 16C550 from National, ST, ... is a UART with FIFO
from Texas Instruments there are many other types, but I don't know
which you can buy in your contry...
Another possibility is to use a shift register or a CPLD (to build your own
UART).
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ic02
Joined: 12 Mar 2003
Posts: 1
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| 10 May 2003 3:16 To:mr_ghz |
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Can we make friend?
My EMAIL is grade2002(at)etang.com.
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