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AD9675 data sheet typo? (ILAS repeat count)

Question asked by tonyle on Mar 10, 2016
Latest reply on Mar 15, 2016 by AshrafS

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.

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