RF6001_1 RFMD [RF Micro Devices], RF6001_1 Datasheet - Page 21

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

RXMODE=001, 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 16 bits of I data followed by 8 blank bits, and the output data pattern on DRQ is 16 bits of Q data followed by 8 blank
bits. In this case, FSR is (13/24)MHz=541.667kbps and always marks the beginning of the I and Q 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 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.
RXMODE=010
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 16 bits of Q data. In this case, FSR is (8.667/32)MHz=270.833kbps and always marks the
beginning of the I data transfer. CLKR is 8.667MHz.
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=010, 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 disabled.
DBL has no effect in this mode.
The following diagram summarizes this mode of operation.
Rev A3 DS050929
CLKRM=00
CLKRM=01
CLKRM=00
CLKRM=01
CLKR,
CLKR,
CLKR,
CLKR,
DRQ
ENR
DRQ
FSR
ENR
FSR
DRI
DRI
1
1
Q(15)
Q(15)
I(15)
I(15)
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at ([phone] or [e-mail].
2
2
Q(14)
Q(14)
I(14)
I(14)
3
3
15
15
Q(1)
I(1)
Q(1)
I(1)
16
16
Q(0)
I(0)
Q(0)
I(0)
17
17
Part of the POLARIS™ TOTAL RADIO™ Solution
18
18
19
19
47
23
48
24
RF6001
1
1
Q(15)
Q(15)
I(15)
I(15)
2
2
Q(14)
Q(14)
I(14)
I(14)
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