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參數(shù)資料
| 型號： | W3020 |
| 英文描述： | GSM Multiband RF Transceiver |
| 中文描述： | 手機(jī)多頻段射頻收發(fā)器 |
| 文件頁數(shù)： | 34/44頁 |
| 文件大小： | 409K |
| 代理商： | W3020 |
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Advance Data Sheet
December 1999
W3020 GSM Multiband RF Transceiver
34
Lucent Technologies Inc.
Programming Example
(continued)
Table 46. Perform Receive (W3020)
TR register: full receive mode; set DGC gain to 60 dB gain setting with LNA on (G0 = 1) and with normal dc
offset calibration; band bit B = 1.
Bit
1
2
3
4
5
6
7
8
9
10
T0
0
11
T1
0
12
T2
0
13
DS
0
14
DP FTR T3
0
1
15
16
17
T4
0
18
T5
0
19
T6
0
20
21
22
23
B
1
24
A2
1
Bit No.
A0
Setting
0
A1
0
G0
1
G1
1
G2
1
G3
1
G4
1
G5
0
G6
0
MO1
1
MO2
1
MO3
1
0
Note: Hex value = f8407C.
To change gain settings and remain in receive mode without redoing dc offset calibration, repeat the bus
transaction above with dc skip bit high (DS = 1). It should be noted that as dc offset is gain-dependent, dc skip
mode can be used only for receive signal levels where dc offset is insignificant.
Table 47. Settle PLL in GSM1800 Band for Transmit Mode (W3020/W3000)
MAIN register: switch W3020 to transmit settling mode to allow LO2 to settle; band bit B = 1.
(W3000 is programmed at the same time to settle LO1 to 1567 MHz frequency with N = 7835 to transmit at
1747 MHz.)
Bit
1
2
3
4
5
6
7
8
9
10
M2
1
11
M3
0
12
M4
1
13
M5
1
14
M6
1
15
M7
1
16
M8
0
17
M9 M10 M11
MO1 MO2 MO3/EN
0
0
0
0
18
19
20
21
22
23
B
1
24
A1
0
Bit No.
Setting
A0
A1 A2
0
1
A3
0
A4
1
A5
1
A6
0
A7
0
M1
0
1
0
1
Notes:
Hex value = 607A36.
Italics indicate W3000 bits.
Table 48. Basic GSM1800 Transmit Burst (W3020)
TR register: full transmit mode; band bit B = 1.
Bit
1
2
3
4
5
6
7
8
9
10
T0
0
11
T1
0
12
T2
0
13
DS
0
14
DP
0
15
FTR
0
16
T3
0
17
T4
0
18
T5
0
19
T6
0
20
MO1
0
21
MO2
1
22
MO3
1
23
B
1
24
A2
1
Bit No.
Setting
A0 A1=0 G0
0
0
G1
0
G2
0
G3
0
G4
0
G5
0
G6
0
0
Note: Hex value = f00000.
To change to the GSM900 MHz band for the example above, band bit B must be changed to B = 0 and the
appropriate channel programming must be set up for the W3000 synthesizer.
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