RF6001 datasheet(52/70 Pages) RFMD

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RF6001

Rev A3 DS050929

7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical

support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.

Part of the POLARIS™ TOTAL RADIO™ Solution

General Purpose Output Control

The RF6001 provides three general purpose output pins, GPO1, GPO2, and GPO3; a timing control unit is implemented within

the RF6001. This timing control is identical to that in the RF2722 for the GPO’s with added GPO control in TX modes. The tim-

ing controls are set by the DCTIME2 (11:0) and TRD bits in the TRSW register. The GPO values used during the startup of RX or

TX bursts are defined by the TRDCRX (2:0) and TRDCTX (2:0) bits in the CFG3 register. This allows the RF6001 to control the

TX/RX switch to provide more isolation during DC offset correction in RX mode, or to provide more isolation for the PA output

power before ramping up in TX mode.

Power Supplies and Control Signals

The RF6001 has four primary supply pins: VDD, VCC, VCCV, and VDDRX. These pins require a 2.7V to 3.0V supply, usually from a

voltage regulator on the application circuit board. These four supply pins must be maintained within 0.3V of each other. That

is, all four supplies should be power up or down together. The part is not designed to allow one supply to be at 2.7V to 3V with

the others at 0V.

The recommended start-up and power-on sequence for the RF6001 is described below.

1) Power-down: all power supplies and enable lines are low (OSCM, RXEN, TXST, TXEN).

2) Standby Mode: Board regulators to VDD, VCC, VCCV, and VDDRX are enabled. All enable lines are low. The internal digital volt-

age regulator (between VDD and DCD) requires approximately 50us to settle, triggering the internal power-on reset (POR) cir-

cuit. It is recommended that the baseband processor send a RESET op-code to the RF6001 at this point, as well.

3)Idle Mode: The reference oscillator input circuits and output buffer (OSCO) are enabled by setting the OSCM pin high. The

oscillator input and output circuits require up to 1ms to settle.

4) Active Mode (either Receive or Transmit): The required Receive or Transmit signal path and PLL/VCO circuits are enabled by

the RXEN or TXST pin, respectively.

RF3146

27 pF

47 pF

Loop

Filters

VCO2

VCO1

VCO

VREG

RF6001

RF2722

RF6001 Datasheet(PDF) 52 Page - RF Micro Devices