5 - 4
Pin
No.
LINE NAME DESCRIPTION
IN/
OUT
CONDITION
123 DAST Strobe to the DAC (M: IC2). O –
125 FMDA Data from the FRONT CPU (F: IC502). I –
126 MFDA Data to the FRONT CPU (F: IC502). O –
127 OPT2 Port for optional unit. O –
128 OPT1 Port for optional unit. I –
129 OPT3 Port for optional unit. I –
131 CSO Port for optional unit. O –
132 CSI Port for optional unit. I –
133 EXOE Output enable signal to the seri-para converter (M: IC31). O –
134 EXST Strobe to the seri-para converter (M: IC31). O –
135 DRES Reset signal to the DSP IC (M: IC12). O –
136 HCS DSP data line. I/O –
138 GPIO2 DSP data line. I/O –
139 GPIO1 DSP data line. I/O –
140–144 D0–D4 DSP data bus line. I/O –
5-5 CPU (M: IC20) PORT ALLOCATION (continued)
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