Epson TM-U950 - Page 80

Rev. A Mechanism Configuration and Operating Principles 2-35
TM-U950/U950P Technical Manual
25 PC 5 POW_TRG O TTL Power control trigger signal
26 PD 0 IF_DET I TTL
Unused (connected to GND) on TM-U950 I/F
circuit board identify signal on TM-U950P
27 PD 1 CLK_REQ I TTL
Unused (connected to GND) on TM-U950
synchronization clock request signal for TM-
U950P
28 GND - - GND Power supply
29 GND - - GND Power supply
30 V
DD
--+5VPower supply
31 PD 2 SRTS 0 TTL
Unused (connected to GND) on TM-U950,
software RTS output on TM-U950P
32 PD 3 N. C I TTL Unused (connected to GND)
33 PD 4 N. C I TTL Unused (connected to GND)
34 PD 5 N. C I TTL Unused (connected to GND)
35 PD 6 N. C I TTL Unused (connected to GND)
36 PD 7 N. C I TTL Unused (connected to GND)
37 PD 0 CJNE I TTL Journal near-end signal
38 PE 1 CRNE I TTL Receipt near-end signal
39 PE 2 CJPE I TTL Journal paper-end signal
40 PE 3 CRPE I TTL Receipt paper-end signal
41 PE 4 PFR_SW I TTL Receipt FEED switch L = ON
42 PE 5 PFJ_SW I TTL Journal FEED switch L = ON
43 PE 6 COVER I TTL Cover open detection
44 PE 7 DK_S I TTL Drawer status signal
45 PC 7 PC_LED O TTL Receipt LED L = ON
46 (STRB
) CLK I TTL Unused (connected to GND) on TM-U950
synchronization clock interrupt for the TM-
U950P
47 BUSY RTS O TTL
Unused (open) for TM-U950. RTS output for
the I/F circuit board for the TM-U950P
48 (CSTRB
)CSTB OTTL
Unused on TM-U950, receive interrupt on TM-
U950P
49 (CRDY
)SRTS ITTL
Unused (connected to GND) for the TM-
U950, software RTS input for TM-U950P
50 GND _ _ GND Power supply
51 CRIN CRIN I TTL Unused (connected to GND)
52 (CROUT
)(CROUT)OTTLUnused (open)
53 AB 0 A 0 I TTL Address signal Bit 0
54 AB 1 A 1 I TTL Address signal Bit 1
Table 2-2. Gate Array Pin Assignments (continued)
Pin number Gate array function Signal designation` I/O Level Description
CONFIDENTIAL