CMX994 Datasheet, PDF (30/61 Pages) CML Microcircuits – Local Oscillator

Direct Conversion Receivers
CMX994/CMX994A/CMX994E
7.6 Options Control Register – CMX994A and CMX994E only
7.6.1
Options Control: $15 – 8-bit write only
This register controls options features added in the CMX994A and CMX994E devices only. All bits of this
register are cleared to ‘0’ by a General Reset command.
7
6
IP3X
Reserved
5
4
3
Reserved
Reserved
PDQ
2
1
0
PDI
PHCON PHOFF
b7
CMX994E only - ‘1’ enables enhanced mixer intermodulation mode in the receive path mixers;
normal operation when set to ‘0’.
CMX994A – reserved, clear to ‘0’
b6
reserved, clear to ‘0’
b5
reserved, clear to ‘0’
b4
reserved, clear to ‘0’
b3
When set ‘1’ this bit will power down all circuitry in the Q path leaving only the I channel active;
normal operation (I and Q paths active) when bit is cleared to ‘0’.
b2
When set ‘1’ this bit will power down all circuitry in the I path leaving only the Q channel active;
normal operation (I and Q paths active) when bit is cleared to ‘0’.
b1-0 LO Phase Correction Control
b1 b0 LO Phase Correction
0
0 Enabled
1
1 Powered down
0
1 reserved, do not use
1
0 reserved, do not use
7.6.2 Options Control: $E5 – 8-bit read only
This register reads the value in register $15; see section 7.6.1 for details of bit functions.
 2015 CML Microsystems Plc
Page 30 of 70
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