TECHNICAL DATA SHEET

PEM010

60 GHz Transmitter (Tx) Waveguide Module

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11

Table 4.1 Register Byte Functions

Table 4.1 Register Byte Functions

Bit

Name

BYTE 0

7

pa_pwrdn

pa_pwrdn_fast

6

5

4

3

2

1

0

mixer_pwrdn

divider_pwrdn

if_bgmux_pwrdn

if_mixer_pwrdn

driver_pwrdn

ifvga_pwrdn

Active high to power down PA circuits not controlled by bit <6>

Active high to power down PA core in < 1 us

Active high to power down IF to RF mixer

Active high to power down local oscillator divider

Active high to power down one of three on-chip refs (IF) and associated mux

Active high to power down baseband to IF mixers

Active high to power down PA predriver

Active high to power down IF variable gain amplifier

BYTE 1

Function

7

6

5

4

3

2

1

0

BYTE 2

ipc_pwrdn

7

6

5

4

3

2

1

0

fdb_11

Active high to power down module current reference generator

Reserved; bits <7:4> = 1111 for normal operation

tripler_pwrdn

Active high to power down frequency tripler

ifvga_q_cntrl_2

ifvga_q_cntrl_1

ifvga_q_cntrl_0

not used

not used

not used

Not used; bits <2:0> = xxx

fdb_10

fdb_9

fdb_8

pa_sel_vgbs_3

pa_sel_vgbs_2

pa_sel_vgbs_1

pa_sel_vgbs_0

PA output transistors base voltage regulator;

bits <3:0> = 0000 for normal operation

IF filter Q in the VGA amplifier; bits <2:0> = 000 for highest Q and gain

For reduced Q and wider bandwidth, bits <2:0> = 001,100,101,111 in sequence