RS232 Protocol

3
Section 2: Feedback String Format
Standard Response String Format
Start Count Device ID Type Data0 - Data40 (41 Bytes) Checksum
0xFE 0x2B 0x40 0x20 ASCII Characters 0xXX
The feedback string is a representation of the display of the unit. The Data0 data byte
contains data on the current brightness setting of the display. The remaining 40 data
bytes contain data representing the remaining ASCII test and which of the various icons
on the front display are currently illuminated and must be parsed to obtain track and disc
data.
Data0 – Display Brightness
Value Brightness Level
0x00 Brightness Level 0 (Brightest)
0x01 Brightness Level 1
0x02 Brightness Level 2
0x03 Brightness Level 3
0x04 Brightness Level 4
0x05 Brightness Level 5
0x06 Brightness Level 6
0x07 Display OFF
Data1 – Data40 – Display Data
The values must be parsed to obtain information on what is displayed. Below is a
reference chart for what icons and information the bytes represent.
Value Display Data
0x00-0x09 0 – 9
0x0A

0x0B

0x0C

0x0F :
0x15 L (Repeat All)
0x16 T (Track)
0x17 C (Chapter)
0x19 S (Random)
0x20 Space
0x41-0x5A ASCII Characters A – Z
0x61-0x7A ASCII Characters a – z