參數(shù)資料
型號(hào): LMX2335U
廠商: National Semiconductor Corporation
英文描述: PLLatinum Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications
中文描述: PLLatinum超低功耗雙頻率合成射頻個(gè)人通信
文件頁數(shù): 36/48頁
文件大小: 3127K
代理商: LMX2335U
2.0 Programming Description
2.1 MICROWIRE INTERFACE
The 22-bit shift register is loaded via the MICROWIRE interface. The shift register consists of a 20-bit
Data[19:0] Field
and a 2-bit
Address[1:0] Field
as shown below. The Address Field is used to decode the internal control register address. When LE
transitions HIGH, data stored in the shift register is loaded into one of 4 control registers depending on the state of the address
bits. The MSB of Data is loaded in first. The Data Field assignments are shown in
Section 2.3 CONTROL REGISTER CONTENT
MAP
.
MSB
LSB
Data[19:0]
Address[1:0]
21
2 1
0
2.2 CONTROL REGISTER LOCATION
The address bitsAddress[1:0] decode the internal register address. The table below shows how the address bits are mapped into
the target control register.
Address[1:0]
Field
0
0
1
1
Target
Register
RF2 R
RF2 N
RF1 R
RF1 N
0
1
0
1
2.3 CONTROL REGISTER CONTENT MAP
The control register content map describes how the bits within each control register are allocated to specific control functions.
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