VS1001K
VLSI
DATASHEET
y
Solution
10. VS1001 VERSION CHANGES
10 VS1001 Version Changes
This chapter describes changes between different generations of VS1001.
Note: VS1001k is the final, production version of VS1001.
10.1 Changes Between VS1001h and Production Version VS1001k, 2001-08
• When the chip is reset with pin XRESET, XTALO and XTALI are driven to ground.
• Running with normal clock earlier required slightly different clock generation than for clock-
doubled (see Chapters 4 and 5). This is no longer the case.
• Lots of new SCI register MODE bits: SM DIFF, SM FFWD, SM BASS. For details, see Chap-
ter 7.5.1.
• Default is now to only decode MP3.
• 20..60 mV DAC offset corrected.
• A firmware bug made it impossible to decode 320 kbits/s MP3 data. This has been corrected.
• A hardware bug made it practically impossible to load code to RAM. This has been corrected.
10.2 Changes Between VS1001g and VS1001h, 2001-05
• Analog voltage requirements have been lowered. Now full gain can be achieved with a 2.7 V
analog input voltage, whereas 3.4 V was needed before.
10.3 Changes Between VS1001d to VS1001g, 2001-03
• Clock is now adjustable, in VS1001d only 24.576 MHz could be used.
• Clock doubler added.
• VS1001d played 48 kHz instead of 12 or 24 kHz, this is corrected.
Version 4.11, 2003-09-18
37
ETC [ ETC ]
