AK1599V Datasheet, PDF (14/41 Pages) Asahi Kasei Microsystems – RF Transmitter for Satellite Communication

[AK1599V]
9. Functional Descriptions
9.1. Operating Mode
(a) Operating mode controlled by PDN pin, TXON pin and MODE[1:0] bits
Table9. Operating Mode
Pin
Pin
Mode _{PDN TXON}
State 0 0
X
State 1 1
0
State 2 1
0
State 3 1
0
State 4 1
0
State 5 1
1
State 6 1
1
State 7 1
1
State 8 1
1
Registers
MODE MODE
[1]
[0]
X
X
0
0
0
1
1
0
1
1
0
0
0
1
1
0
1
1
TX
Block
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
Operation of each block
Synthesizer VCO
LOP,
Block
Block LON pin
OFF
OFF
OFF
ON
ON
OFF
ON
ON
Output
ON
OFF
Input
OFF
OFF
Input
ON
ON
OFF
ON
ON
Output
ON
OFF
Input
OFF
OFF
Input
State0: Standby mode. Current Consumption becomes minimum. Register setting is available. (Note)
State1: VCO and Synthesizer operate.
State2: VCO and Synthesizer operate and output its signal from LOP, LON pins.
State3: Only Synthesizer operates. PLL can be operated by using external VCO.
State4: Standby mode. Current Consumption becomes minimum. Register setting is available. (Note)
State5: TX block operates in addition to State1.
State6: TX block operates in addition to State2.
State7: TX block operates in addition to State3.
State8: TX block operates. Input local signal from LOP, LON pins.
(Note) After powering on AK1599V, the initial registers values are not defined. It is required to write the
data in all addresses.
(b) Digital interface voltage option selected by IFSEL pin
Regarding SVDD which is power supply for digital interface, either external power supply (5V) or internal
3.3V regulator can be selected.
Table10. Function of IFSEL pin
IFSEL
“L” (should be connected to GND)
“H” (should be connected to PVDD)
SVDD
External Power Supply (5V)
Internal 3.3V regulator
9.2. PLL
The Phase Locked Loop consists of a Fractional / Integer Frequency synthesizer. The PLL covers LO
frequency range from 1700MHz to 2100MHz. It also has an integrated voltage controlled oscillator
(VCO) which achieves good phase noise performance.
015006835-E-00
- 14 -
2015/5