參數(shù)資料
型號(hào)： 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(yè)數(shù)： 25/56頁(yè)
文件大?。?/td> 392K
代理商： ZL20250
ZL20250
Data Sheet
25
Zarlink Semiconductor Inc.
2.0 Programming and Control
Programming via the serial bus is via 24 bit words with a 4 bit address as shown below
Bit23 (MSB) is loaded first. Bits 3:0 are used as address bits for the control registers. Details of serial bus timing are
shown in Figure 14.
Figure 14 - Serial Bus Timing
2.1 Power Control Registers - Address 0 to 3
These registers are used in conjunction with the TX RXB and ENABLE1 and ENABLE2 control pins to power up the
required sections of the device for any required mode. This enables power consumption to be optimized under all
conditions. Figures 4 - 7, which show the receive and transmit paths in detail, show which sections are powered up
by each control bit.
The assignment is common for each of the registers 0 to 3 and is shown below.
23
22
21
20
19
18
17
17
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Data
Address
Bit
Circuit Section
23
Not used
22
Receive Baseband section
21
UHF LO Buffer
20
Receive VHF VCO
SCLK
SDAT
SLATCH
Bit 23
Bit 22
Bit 21
Bit 0
t1
t2
t3
t4
t5
t6
ENABLE1/2
t7
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