Specifications

RMU800A SERVICE MANUAL
－ 87 －
15. CPU: M16C (Tx-Rx Unit IC120)
15-1 Pin Funcion
PIN No. PORT PIN NAME I/O DESCRIPTION
1 P94/DA1 2TN/5TN I 2-tone/5-tone decode pulse input
2 P93/DA0 DTMF O DTMF/2Tone/5Tone/BEEP output
3 P92 SBC O SB power switch control. H: off L: on
4 P91 AFDIO I/O AK2346 DATA I/O (SDAT)
5 P90 AFSCLK O AK2346 serial clock (SCLK)
6 BYTE BYTE I +5V(5C)
7 CNVSS CNVSS I GND
8 P87 PA O MIC PA switch control PA: H
9 P86 DACSTB O DA conversion strobe output
10 RESET RESET I Reset
11 XOUT XOUT O Clock output
12 VSS VSS I GND
13 XIN XIN I Clock input
14 VCC VCC I +5V
15 P85/NMI NMI I NMI, usually not use
16 P84/INT2 AFRDF I Bandpass MSK receive detect (RDF/FD)
17 P83/INT1 DTMFSTD I DTMF decode detect Detect: H
18 P82/INT0 AUX2 I/O PCB AUX 2 (input)
19 P81/TA4in AUX3 I/O AUX3 port (input)
20 P80/TA4out AUX4 I/O AUX4 port (input) (output)
21 P77/TA3in SPMUTE O SP Mute Mute: H
22 P76/TA3out TO O CTCSS/CDCSS modulation output
23 P75/TA2in EMICC O External MIC control External MIC: H
24 P74/TA2out AFTDATA O Bandpass chip MSK serial data(TDATA)
25 P73/TA1in AFTCLK I Bandpass chip MSK serial clock(TCLK)
26 P72/TA1out AFDIR O Bandpass chip I/O control (DIR)
27 P71/RXD2 RXD2 I Serial data input
28 P70/TXD2 TXD2 I Serial data output
29 P67/TXD1 TXD1 O Acc comm2 (serial data output)
30 P66/RXD1 RXD1 I Acc comm2 (serial data input)
31 P65 AUX5 I/O AUX5 port (output)
32 P64 AUX6 I/O AUX6 port (output)
33 P63 TXD0 O Acc comm1(serial data output)
34 P62 RXD0 I Acc comm1(serial data input)
35 P61 AUX7 I/O AUX7 port (output)
36 P60 AUX1 I/O AUX1 port (input)
37 P57 RDY I Pull Up