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參數(shù)資料
| 型號： | LUCW3020CCS |
| 英文描述： | GSM Multiband RF Transceiver |
| 中文描述： | 手機多頻段射頻收發(fā)器 |
| 文件頁數(shù)： | 33/44頁 |
| 文件大小： | 409K |
| 代理商： | LUCW3020CCS |
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Advance Data Sheet
December 1999
W3020 GSM Multiband RF Transceiver
Lucent Technologies Inc.
33
Programming Example
This programming example shows how the W3020 can be programmed after power-on and how it can be
programmed prior to receive and transmit bursts. The reference register for the W3000 is initialized separately
with the reference divider ratio, as described in the W3000 data sheet.
Table 43. Initialize CONFIG Register (Reset W3020)
To reset all registers to their default state and put the device into a low-power sleep mode, one write to the
CONFIG register is necessary. This will also reset W3000 if it is connected on the same three-wire bus.
Normally, the device will be both reset and configured in the same programming as follows:
CONFIG register: reset device, set dc calibration time to max value (486 μs), set phase detector polarity for the
positive slope VCO, use high BW and coarse dc offset tune.
Bit
1
2
3
4
5
6
7
8
9
10
C4
1
11
C5
0
12
C6
0
13
C7 LD2
0
14
15
C8
0
16
VO
1
17
C9 OLD C10
0
0
18
19
20
F1
0
21
F2
0
22
F3
0
23
F4
0
24
A2
1
Bit No.
Setting
A0
1
A1
0
RS DT0 DT1 DT2 C1
1
1
1
C2
0
C3
0
1
1
0
1
Note: Hex value = 84827d.
Table 44. Initialize TR Register
The reset operation will set the TR register to the following content:
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
0
22
MO3
0
23
B
0
24
A2
1
Bit No.
Setting
A0
0
A1=0
0
G0
0
G1
0
G2
0
G3
0
G4
0
G5
0
G6
0
Note: Hex value = 800000.
A filter tune request with this TR content, setting FTR = 1 and MO[1:3] = 111, could be done as a second
initialize followed by a third programming that powers the IC in idle mode.
Table 45. Settle PLL to GSM1800 Band for Receive Mode (W3020/W3000)
Main register: switch to W3020 receive settling mode to allow LO2 to settle; band bit B = 1 for GSM1800.
(W3000 is programmed at the same time to settle LO1 to 1572 MHz frequency with N = 7860 to receive at
1842 MHz.)
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
M10 M11
MO1 MO2 MO3/EN
0
0
1
19
20
21
22
23
B
1
24
A1=0
0
Bit No.
A0=0
A1
Setting
A2
0
A3
1
A4
0
A5
1
A6
1
A7
0
M1
0
M2
1
M3
0
M4
1
M5
1
M6
1
M7
1
M8
0
M9
0
0
0
0
1
Notes:
Hex value = 687A68.
Italics indicate W3000 bits.
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