rf/logic

 1 +VB             Vcc          +12v                      J3/2
 2 POWEL           ENABLE       tx/rx select              PORTF.5
 3 nc              AF IN        ?
 4 POW             POWER        power control voltage     (PORTF.6,7)
 5 AUD_OUT         AUDIO OUT    speaker out               J3/5 (AN0,2,4,6)
 6 nc              BZ IN        local buzzer etc
 7 RSSI            S-meter      signal level              AN1

 
 1 GND             GND          gnd                       VSS
 2 nc              nc
 3 BUSY            BUSY SIGNAL  squelch level             AN3
 4 nc              AF OUT       detector audio
 5 nc              TX DATA IN   fsk etc in ?
 6 nc              TONE-IN      ctcss etc in ?
 7 MIC_IN          MIC IN       speech in                 (MIC_LIVE + PWMA)
 8 UNLOCK          UNLOCK       pll unlocked              AN5
 9 STROBE PLL      PLL STB      load pll                  PORTF.4
10 DATA            DATA         serial databit            PORTF.3
11 CLK             CLOCK        serial clock              PORTF.2
12 STROBE control  4094 STB     load control register     PORTF.1

D9

 1 MOSI     one-wire data
 2 +VB      +12v
 3 GNDD     digital ground
 4 SCK      nc
 5 AUD_OUT  8ohm, 0.2w, 1v ?
 6 MISO     /ptt_b
 7 +5VDD    600mA max
 8 GNDA     analog ground
 9 MIC_LIVE 1kohm 1v ?

D25

 1 GNDD
 2 (async INPUT  1) ----------------------- 1 in
 3 (async OUTPUT 1) ----------------------- 1 out
 4 RTS1 (DCE input) -------------+
 5 CTS1 (DCE output)             |
 6 DSR1 (DCE output)             |
 7 GNDD -----------------------  |  ------- ground
 8 DCD1 (DCE output)             |
 9 +VB --------------------------+--------- +12v
10 nc                            |
11 DTR2 (DCE input) /ptt_a       |
12 DCD2 (DCE output)             |
13 CTS2 (DCE output)             |
14 (async INPUT  2) -----------  |  ------- 2 in
15 nc                            |
16 (async OUTPUT 2) -----------  |  ------- 2 out
17 nc                            |
18 nc                            |
19 RTS2 (DCE input) -------------+
20 DTR1 (DCE input)
21 nc
22 nc
23 DSR2 (DCE output)
24 nc
25 nc