DE6181
Q. I'm having problems trying to load a Function ImageTM to the DE6181?
A. A small number of early revision (board mod 2) DE6181 boards were shipped without an external pull up resistor on the CMX618 CSEL pin. If this pin is left floating it is possible that the device, upon power-up, enters a state where a Function ImageTM download will not be accepted.
To counter this, and to ensure that Function ImageTM installs are reliable, a 10kOhm pull-up resistor should be fitted as shown in the attached illustration.
Q. I would like to use some proven settings in my CMX618 testing. Do you have any proven settings I can use??
A. Yes. Two scripts are provided below to allow CMX618 encoder and decoder testing. Common features for both scripts include:
| W1 | 01 | //this is a 1-byte C-BUS write, first byte is for General Reset ($01) | |
| W2 | 09 | 03 | //this is a 2-byte C-BUS write, first byte is register address ($09, Powersave) and second byte is register contents (0x03) |
| W3 | 1E | 809E | //this is a 3-byte C-BUS write, first byte is register address ($1E, VDWHLWM) and second and third bytes are register contents (0x809E) |
| R1 | 30 | //this is a 1-byte C-BUS read, register address to be read is $30 (ENCFRAME) | |
| R2 | 40 | //this is a 2-byte C-BUS read, register address to be read is $40 (Status) |
Downloadable Scripts
The first script, "CMX618_Encode_DTMF.txt", configures the CMX618 to
generate a 10-packet data pattern corresponding to a DTMF "9" character.
The second script, "CMX618_Decode_DTMF.txt", writes that
data pattern into a decode-configured CMX618 for playback of the DTMF tone.
Both of these scripts were tested on an EV6180 using a host microcontroller board to control the CMX618.
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