參數(shù)資料
型號： ZL20250
廠商： Zarlink Semiconductor Inc.
英文描述： 2.5G Multimode Transceiver
中文描述： 2.5G的多模收發(fā)器
文件頁數(shù)： 28/56頁
文件大?。?/td> 392K
代理商： ZL20250
ZL20250
Data Sheet
28
Zarlink Semiconductor Inc.
Note 1:
Note 2:
Not required if driving external receive mixer direct from UHF VCO.
Can be used for IS136 if required.
The receive register contains all bits required when in receive mode: the transmit register contains all bits required
in transmit mode. The Enable1 configuration register contains all bits required to power up oscillators and
synthesizers in both receive and transmit mode. The Enable2 configuration register contains all bits required to
power up the complete receive and transmit modes (this register can be set to all '1's if preferred).
The following words should therefore be programmed on the serial bus (Hex format):
Receive register (0)
Transmit register (1)
Enable1 Config. register (2)
Enable2 Config. register (3)
59E200
081FF1
188262
59FFF3
2.1.2 Power Control Modes - AMPS
When operating in AMPS mode the ZL20250 will operate in either Receive only or Duplex. The enable registers
should therefore be programmed as shown below.
5
Transmit VHF VCO
0
1
1
1
4
Transmit up-converter IF input
0
1
0
1
Bit
Circuit Section
Receive
Addr 0
Transmit
Addr 1
Enable 1
Config.
Addr 2
Enable 2
Config.
Addr 3
Comments
23
Not used
0
0
0
0
22
Receive Baseband section
1
1
0
1
21
UHF LO Buffer
0
0
0
0
Note 1
20
Receive VHF VCO
1
1
1
1
19
UHF synthesizer
1
1
1
1
18
Receive RSSI circuit
1
1
0
1
17
Not used
0
0
0
0
16
Receive Quadrature down-converter
1
1
0
1
15
Receive VHF PLL
1
1
1
1
14
Receive IF input
1
1
0
1
13
Receive AGC amplifier
1
1
0
1
12
Transmit reconstruction filters
0
1
0
1
11
Transmit RF
0
1
0
1
10
Transmit UHF LO
0
1
0
1
9
UHF LO input buffer
1
1
1
1
8
Transmit IF
0
1
0
1
Bit
Circuit
Section
Receive
Addr 0
Transmit
Addr 1
Enable 1
Config.
Addr 2
Enable 2
Config.
Addr 3
Comments
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