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Serial bus analysis
R&S
®
RTA4000
311
User Manual 1335.7898.02 ─ 08
Figure 13-37: Decoded LIN signal with frame table and applied label list
gray
= synchronization break, synchronization byte, correct checksum
yellow = identifier
green = parity bits
blue
= data words (UART words)
13.7
Audio signals (option R&S
RTA-K5)
The R&S
RTA4000 can analyze several standard and de-facto industry standard sig-
nals: I²S Inter-IC Sound standard audio format, left justified and right justified data for-
mats and Time Division Multiplexed (TDM) audio format.
13.7.1
Audio protocols
All audio protocols use 3 lines:
●
The clock line generates the bit clock.
●
The word select line (WS, also known as word clock) defines the frame start and
the maximum length of the data word.
For pulse code modulated signals (I²S standard, left and right justified data for-
mats), the level of the WS signal assigns the data words to the left and right chan-
nels.
Audio signals (option R&S
RTA-K5)