Harman Kardon SIG2.0 Owners Manual - Page 13

SIGNATURE BUS PROTOCOL MASTER DOCUMENT Revised 2-24-98 CONTENTS OF NON-VOLATILE MEMORY REQUEST COMMAND: Preamble Target Byte Device Type Target Unit ID Source Device Type Source Unit ID Data Length Command Modifier Command Byte Data Byte(s) Checksum Byte 7Eh 20h 01h 30h 01h 06h 01h 72h See below See page 7 The Contents of Non-Volatile Memory Request command causes the Target unit to transmit, in the response, the contents of its non-volatile memory. Two values are included in the data segment of the command: an "Offset" data word that determines how many bytes from the beginning of the Non-Volatile memory structure that the desired data begins, and a "Length" data word that determines the total number of bytes to be transmitted back to the Source unit. NOTE: sending a "Length" data word value of zero will cause the Target unit to respond with the rest of the structure (from offset to the end) - the number of bytes returned in the response will reflect the actual number of bytes involved. RESPONSE: Preamble Target Byte Device Type 7Eh 30h Target Unit ID 01h Source Device Type 20h Source Unit ID 01h Data Length Computed Command Modifier 02h Command Byte 72h Data Byte(s) Checksum Byte See below See page 7 uint spkr_cfg; uchar spkr_mutes; char Volume_preset; Spkr_adj_st spkr_adjs; signed char center_level; signed char front_right_level; signed char front_left_level; signed char back_right_level; signed char back_left_level; signed char subwfr_level; char front_distance; char cen_distance; char back_distance; char source; uint opFlag; char svidRecSrc; char compvidRecSrc; char audRecSrc; char dsplyTimoutVal; char frntPnlSts; char frntPnlBrit; char menuBkgrnd; // current speaker configuration // mask bits for speaker group muting // power-on volume setting // speaker level adjustments // currently active source // general purpose operational flags // used when tracking disabled // used when tracking disabled // used when tracking disabled // seconds counter for VFD/OSD dsply timeout // Off, On, or Timeout // Dim, Med or High Page 13 of 20