HMC6000LP711E Datasheet, PDF (13/18 Pages) Hittite Microwave Corporation – Multi-Gbps Data Communications

HMC6000LP711E
v00.1112
Millimeterwave Transmitter
57 - 64 GHz
Figure 23. Timing Diagram for reading a row of the Transmitter Serial Interface
Table 8. Transmitter Register Array Assignments
Register Array Row & Bit
Internal Signal Name
Signal Function
ROW0
ROW0<7>
pa_pwrdn
Active high to power down most other PA circuits not controlled by ROW0<6>
ROW0<6>
pa_pwrdn_fast
Active high to power down the PA core in < 1 µs
ROW0<5>
upmixer_pwrdn
Active high to power down IF to RF upmixer
ROW0<4>
divider_pwrdn
Active high to power down local oscillator divider
ROW0<3>
if_bgmux_pwrdn
Active high to power down one of three on-chip bandgap refs (IF) and associated mux
ROW0<2>
if_upmixer_pwrdn
Active high to power down baseband to IF upmixer
ROW0<1>
driver_pwrdn
Active high to power down PA predriver
ROW0<0>
ifvga_pwrdn
Active high to power down IF variable gain amplifier
ROW1
ROW1<7>
ipc_pwrdn
Active high to power down on chip current reference generator
ROW1<6>
tripler_pwrdn
Active high to power down frequency tripler
ROW1<5>
ROW1<4>
ROW1<3>
ifvga_q_cntrl<2>
ifvga_q_cntrl<1>
ifvga_q_cntrl<0>
These bits control the Q of the IF filter in the baseband to IF upmixer;
ROW1<5:3> = 000 for highest Q and highest gain.
To reduce Q and widen bandwidth, increment ROW1<5:3> in the sequence
001
100
101
111
ROW1<2>
ROW1<1>
ROW1<0>
not used
not used
not used
ROW1<2:0> = xxx - not used
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13
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