參數(shù)資料
型號: TB31356AFL
廠商: Toshiba Corporation
英文描述: 1.8GHz,600MHz DUAL-PLL FREQUENCY SYNTHESIZER
中文描述: 配備1.8GHz,600MHz的雙鎖相環(huán)頻率合成器
文件頁數(shù): 6/10頁
文件大?。?/td> 297K
代理商: TB31356AFL
TENTATIVE TB31356AFL
(8) PLL2 reference divider data
This specification is design target. It is subject to change without notice
.
Nov. 27 2002 PAGE 6
l
Consist of a 12-bit reference counter (programmable counter).
l
By sending any data to the reference counter, number of division can be set from 4 to 4095.
LSB
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9 D10 D11 LA SB1 SB2 SBX
0
1
1
Reference counter Battery saving Group code
D=D0+D1*2
1
+.........D11*2
11
4 =< Number of divisions =< 4095
PLL2 divider data
LA External Pin
L
H
Resistor
LA = ”0”
LA = ”1”
(9) Option Control
LSB
0
CP1 CP2 CP3 CP4 LD1 LD2 SB1 SB2 SBX
1
0
0
Charge pump current Lock detection Battery saving Group code
l
Charge pump output current
This IC uses a constant current output type charge pump circuit. Output current is varied by serial data “CP1”
and “CP2”.
CP1
CP3
PLL1 Charge Pump
Output Current
4mA
2mA
1mA
0.5mA
CP2
CP4
PLL2 Charge Pump
Output Current
4mA
2mA
1mA
0.5mA
0
0
1
1
0
1
0
1
0
0
1
1
0
1
0
1
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