RF6001_1 RFMD [RF Micro Devices], RF6001_1 Datasheet - Page 20

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

RF6001
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.
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CLKRM=00 or 01
CLKRM=00
CLKRM=01
CLKR,
CLKR,
CLKR,
DRQ
ENR
FSR
DRI
DRQ
ENR
FSR
DRI
Tcs
1
I(11)
1
Tcwh
2
Tsu
I(11)
I(10)
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at ([phone] or [e-mail].
3
2
I(10)
11
3
I(1)
Tcwl
Th
12
I(0)
11
I(1)
13
Q(11)
12
I(0)
14
Q(10)
13
15
Q(11)
14
23
Q(1)
Q(10)
24
15
Q(0)
25
23
Q(1)
26
24
Q(0)
48
1
I(11)
1
Rev A3 DS050929
I(11)
2
2
I(10)
I(10)