W3020 Datasheet, PDF (21/44 Pages) Agere Systems – GSM Multiband RF Transceiver

Advance Data Sheet
December 1999
W3020 GSM Multiband RF Transceiver
Programming Information (continued)
TR Register
The TR register is the transmit/receive register for W3020. It contains bits for setting various transmit and
receive modes, setting receive gain, etc. It is expected that this register would be written several times during a
frame.
Last bit in serial sequence
First bit in serial sequence
Bit No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Bit A0=0 A1=0 G0 G1 G2 G3 G4 G5 G6 T0 T1 T2 DS DP FTR T3 T4 T5 T6 MO1 MO2 MO3 B A2=1
Table 13. TR Register
Bit Number Bit
24
A2
23
B
22
MO3
21
MO2
20
MO1
19
T6
18
T5
17
T4
16
T3
15
FTR
14
DP
13
DS
12
T2
11
T1
10
T0
9
G6
8
G5
7
G4
6
G3
5
G2
4
G1
3
G0
2
A1
1
A0
SC1 Standard
Setting
1
0
—
Function
Address Bit
Band Select (See Table 14.)
RX, TX, Synthesizer Mode (See Table 15.)
0
Disable LO2 Circuitry in All Modes (See Table 16.)
0
Disable LO1 Circuitry (W3000 excluded) (See Table 17.)
0
RX IF Duty Cycle Corrector Disable (See Table 18.)
0
GSM1800 TX IF LO Divide-by-3 Duty Cycle Corrector Disable (See
Table 19.)
1
LPF Tune Filter Request (See Table 20.)
0
dc Precharge Only (See Table 21.)
0
dc Correction Skip (See Table 22.)
0
LO2 Divide by 2 or Divide-by-3 Select for TX IF (See Table 23.)
0
TX IF LO Divide-by-6 Select (See Table 24.)
0
TX IF Duty-Cycle Corrector Disable (See Table 25.)
—
Digital Gain Control RX IF/IQ-Baseband (See Table 26.)
1
Digital Gain Control LNA On/Off (See Table 26.)
0
Address Bits
0
Note: The TR register is reset to an all-zero state after the reset bit in the CONFIG register has been set high.
Lucent Technologies Inc.
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