RF6001_1 RFMD [RF Micro Devices], RF6001_1 Datasheet - Page 47

• Manufacturer Part Number: RF6001_1
• Description: FRACTIONAL-N RF SYNTHESIZER WITH MODULATOR AND DIGITAL IF FILTER
• Manufacturer: RFMD [RF Micro Devices]

Transmit Test Mode
There is a test mode in the RF6001 to assist in transmitter testing. This mode is invoked by setting SDI bit TXTEST=1. Pseudo-
random data based on a PN9 sequence is used as the data source to the GMSK modulator. The data sequence is initiated by
a rising edge on TXST and ends on the falling edge of TXST. The Transmit Turn-On Sequence defined in an earlier section
should be followed to allow proper VCO warm-up and PA ramping to take place when using this test mode. This test mode is
shown in the diagram below:
Multiplexed RX and TX Busses
The RF6001 RX interface can be connected to the TX interface to result in a single interface to baseband as shown in the dia-
gram below.
Regardless of the TX mode chosen the TX signals are all inputs and will not conflict with the RX signals. The RX outputs must
be set to analog mode by programming S_MODE low and holding RX_EN low during transmit times. This is to avoid a conflict
between the idle ground states of the digital RX outputs and the external TXI and Q signals.
Rev A3 DS050929
Synthesizer
TXDATA
Fractional
TXST
Clock
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at ([phone] or [e-mail].
Digital
Power On
TX_INV
Phase
Adjust
RX
Reset
SDI
MS_LOC
MS_LEN
TX_INV
Interface
Interface
Interface
Interface
Analog
Analog
Digital
Digital
RX
RX
TX
TX
PN9 data
Part of the POLARIS™ TOTAL RADIO™ Solution
TXIB/MS
IBOUT/CLKR
TXQ/MDI
QOUT/FSR
RX_EN
TXQB/MCK
QBOUT/DRI
TXI
IOUT/ENR
TX_ST
TX_EN
RF6001
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