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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=011
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 followed by 16 blank bits. In this case, FSR is (13/48)MHz=270.833kbps
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.
DBL has no effect in this mode.
The following diagram summarizes this mode of operation.
RXMODE=100, 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 16 bits of Q data followed by 64 blank bits. In this case FSR is (13/48)MHz=270.8333kbps
and CLKR is 26MHz. 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.
DRQ
DRI
I(15)
I(14)
I(1)
I(0)
I(15)
I(14)
Q(15)
Q(14)
Q(1)
Q(0)
FSR
CLKR,
CLKRM=00 or 01
ENR
12
3
15
16
17
18
19
31
32
1
2
Tcs
Tcwh
Tcwl
Th
Tsu
12
3
15
16
17
18
19
31
32
33
34
48
1
2
ENR
CLKR
FSR
DRI
I(15)
I(14)
I(1)
I(0)
Q(15)
Q(14)
Q(1)
Q(0)
I(15)
I(14)
DRQ
CLKR
CLKRM=00
CLKR
CLKRM=01
Tsu
Th
Tcwl
ENR
12
3
15
16
17
18
19
31
32
33
34
96
1
2
Tcs
Tcwh
DRQ
DRI
I(15)
I(14)
I(1)
I(0)
Q(15)
Q(14)
Q(1)
Q(0)
I(15)
I(14)
FSR
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