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AD9675 data sheet typo? (ILAS repeat count)

In the AD9675 data sheet Rev. A, Table 31 (Memory Map Registers), p. 54, register JTX_LINK_CTRL4 (0x145) has one field that sets the ILAS repeat count:

Initial lane alignment sequence repeat count

0000 0000 = 4 × K + 1 (default)

0000 0001 = 4 × K + 2

1111 1111 = 4 × K + 128

Since this field is 8 bits, it should have 256 possible settings. So I reckon the last line should read either:

1111 1111 = 4 × K + 256

or, if the intent was to allow only 128 valid settings:

0111 1111 = 4 × K + 128

1000 0000 = reserved

1111 1111 = reserved

Please verify which is correct.

AD9675.pdf
  • Hi Tony,

    Yes there is a typo error in this table entry, which will get fixed. But it is not just the max value. The repeat count, say C, goes from 1 to 256 according to the setting in 0x45. The repeat count will repeat the four multiframes of ILAS C number of times, in other words, the number of frames will be C*4*K where K is the number of frames per multiframe.

    Thanks

    Ashraf