RF6001 datasheet(20/70 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

RXMODE=000, DBL=1

In this mode the SSI provides two samples of I and two samples of Q for each GSM symbol period. The output data pattern on

DRI is 12 bits of I data followed by 12 bits of Q data. In this case, FSR is (13/24)MHz=541.667kbps and always marks the

beginning of the I data transfer. CLKR is 13MHz.

The various CLKR modes are defined as follows: with CLKRM=00 and RXCKB=0, CLKR will shut down after the Q data transfer

completes until the next I data transfer to save power (with RXMODE=000 and DBL=1, CLKR will always be enabled as there

is no blank data); with CLKRM=01 and RXCKB=0, CLKR is always enabled if ENR is true; with CLKRM=1x, CLKR is always dis-

abled.

The following diagram summarizes this mode of operation.

RXMODE=001, DBL=0

In this mode the SSI provides one sample of I and one sample of Q for each GSM symbol period. The output data pattern on

DRI is 16 bits of I data followed by 32 blank bits, and the output data pattern on DRQ is 16 bits of Q data followed by 32 blank

bits. In this case FSR is (13/48)MHz=270.8333kbps and CLKR is 13MHz.

The various CLKR modes are defined as follows: with CLKRM=00 and RXCKB=0, CLKR will shut down after the Q data transfer

completes until the next I data transfer to save power; with CLKRM=01 and RXCKB=0, CLKR is always enabled if ENR is true;

with CLKRM=1x, CLKR is always disabled.

The following diagram summarizes this mode of operation.

ENR

Tcs

Tcwh

Tcwl

CLKR,

CLKRM=00

CLKR,

CLKRM=01

FSR

Tsu

DRQ

DRI

I(11)

I(10)

I(1)

I(0)

Q(11)

Q(10)

Q(1)

Q(0)

I(11)

I(10)

1112

13141523

ENR

CLKR,

CLKRM=00 or 01

FSR

DRI

I(11)

I(10)

I(1)

I(0)

Q(11)

Q(10)

Q(1)

Q(0)

I(11)

I(10)

DRQ

RF6001 Datasheet(PDF) 20 Page - RF Micro Devices

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