AK1599V Datasheet, PDF (30/41 Pages) Asahi Kasei Microsystems – RF Transmitter for Satellite Communication

[AK1599V]
Power up Sequence of VDD / IFSEL and PDN pin simultaneous launch should be done as follows.
[1] Power up VDD / IFSEL and PDN
[2] 10ms after VDD is powered up, set all registers as following order. (Note4)
<Address0x04:Function1> MODE [1:0] = 11b, the other data is arbitrary
<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
Wait for 500s after “<Address0x04:Function1> Arbitrary Data” is set (Note5)
<Address0x01:Freq1> Arbitrary Data
[3] 5ms after Address0x01 is set, power up TXON. (Note6)
(Note4) 10ms is waiting time for internal regulator to become stable
(Note5) 500s is waiting time for synthesizer analog block to start up and become stable
(Note6) 5ms is waiting time for local frequency to become stable
015006835-E-00
- 30 -
2015/5