[AK1572]
9. Block Functional Descriptions
・
Operation Mode
AK1572 operation is controlled as follows by the [PDN] pin and registers.
Pin
Registers
Operating state
Function
[PDN] {MIXEN} MODE[1] MODE[2] Mixer Synthesizer VCO
Local Out
OFF
StandBy1
Prohibited
Func1
”L”
”H”
”H”
”H”
”H”
”H”
”H”
”H”
”H”
X
0
0
0
0
1
1
1
1
X
0
0
1
1
0
0
1
1
X
0
1
0
1
0
1
0
1
OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
ON
ON
OFF
ON
ON
ON
OFF
OFF
ON
OFF
ON
Output
Input
Func2
OFF
OFF
ON
StandBy2
Func3
OFF
OFF
Func4
ON
ON
Output
Input
Func5
ON
OFF
OFF
Func6
ON
Input
StandBy1:Stand-by mode. Current consumption is minimized. It is available to write to the registers.
Func1: VCO and Synthesizer are active and Local signal outputs from [LOP] and [LON] pins.
Func2:Only Synthesizer is active. PLL operation is available with the external VCO.
StandBy2: Stand-by mode. Current consumption is minimized. It is available to write to the registers.
Func3: VCO, Synthesizer and Mixer are active.
Func4: VCO, Synthesizer and Mixer are active and Local signal outputs from [LOP] and [LON] pins.
Func5: Synthesizer and Mixer are active. PLL operation is available with the external VCO.
Func6: Only Mixer is active. A local signal needs to be input from [LOP] and [LON] pins.
MS1551-E-00
2013//8
11
AKM [ ASAHI KASEI MICROSYSTEMS ]
