AK1599V Datasheet, PDF (28/41 Pages) Asahi Kasei Microsystems – RF Transmitter for Satellite Communication

Power up Sequence should be done as follows.
[1] Power up VDD/IFSEL
[2] 10ms after VDD is powered up, set all registers as following order. (Note1)
<Address0x02:Freq2> Arbitrary Data
<Address0x03:Freq3> Arbitrary Data
<Address0x01:Freq1> Arbitrary Data
<Address0x04:Function1> Arbitrary Data
<Address0x05:Function2> Arbitrary Data
<Address0x07:INITIAL1> 00001h
<Address0x0D:INITIAL2> 00000h
<Address0x0D:INITIAL2> 00003h
<Address0x0D:INITIAL2> 00000h
[3] Power up PDN
[4] 500s after PDN is powered up, set the register as follows. (Note2)
<Address0x01:Freq1> Arbitrary Data
[5] 5ms after Address0x01 is set, power up TXON. (Note3)
[AK1599V]
(Note1) 10ms is waiting time for internal regulator to become stable
(Note2) 500s is waiting time for synthesizer analog block to start up and become stable
(Note3) 5ms is waiting time for local frequency to become stable
015006835-E-00
- 28 -
2015/5