Maxim MAX9850 Errata Manual

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REVISION A ERRATA
The errata listed below describe situations where the MAX9850 components perform differently than expected or dif-
ferently than described in the data sheet (this Errata corresponds to Rev 1 of the MAX9850 data sheet). This errata
sheet applies to all MAX9850 devices until further notice.

Description:

The MAX9850 data sheet states that the digital audio interface can operate in I
left/right justified. After careful observation of actual part operation, it was found that data formatted using
2
the I S standard cannot be properly decoded by the MAX9850.
2
I S is a "catch-all" term used to generically describe many digital audio interfaces. In reality, I
digital audio formats that can be used to send digital audio data to a decoder. I
Maxim calls "Left Justified." See Figures 1 and 2.
Figure 1 shows digital audio data left justified. This audio format is identified by the MSB of the data word on
SDIN coinciding with the first BCLK transition after LRCLK changes state. Figure 1 shows left- and right-channel
data both with the SDIN MSB being clocked in on the first BCLK rising edge after the LRCLK transition.
MASTER MODE: S_WCI = 0, S_BCI = 0, S_DLY = 0, S_WS = 0
LRCLK(OUT)
SDIN 15 14 13 12 11 10 9
BCLK(OUT)
SDOUT 15 14 13 12 11 10 9
Figure 1. Left-Justified Audio Data
LEFT
8 7 6 5 4 3 2
LEFT DATA SAMPLE
8 7 6 5 4 3 2
LEFT DATA SAMPLE
DirectDrive Headphone Amplifier
1 0 15 14 13 12 11 10 9
1 0 15 14 13 12 11 10 9
1 of 2
ERRATA SHEET
MAX9850
Stereo Audio DAC with
2
S mode in addition to
2
S is one of many
2
S is very similar to a mode
RIGHT
8 7 6 5 4 3
RIGHT DATA SAMPLE
8 7 6 5 4 3 2
RIGHT DATA SAMPLE
2 1 0
15
1 0