CDCE421A

Table 6 summarizes the contents and functions of the output bit-stream. Note that bit 0 is clocked out first.

Table 6. Register Readback Mode: Output Bit-Stream

OUTPUT BIT-STREAM

FUNCTION

Bit[0:2]

Revision identifier (MSB first)

Bit[3:8]

VCO calibration word

Bit[9]

EEPROM Status:

0 = EEPROM has never been written

1 = EEPROM has been programmed before

Bit[10]

EEPROM Lock:

0 = EEPROM can be rewritten

1 = EEPROM is locked; rewriting the EEPROM is no longer possible

Bit[11:18]

Storage value Word5 (MSB first)

Bit[19:26]

Storage value Word4 (MSB first)

Bit[27:34]

Storage value Word3 (MSB first)

Bit[35:42]

Storage value Word2 (MSB first)

Bit[43:50]

Storage value Word1 (MSB first)

Bit[51:58]

Storage value Word0 (MSB first)

12

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