Pin Description - Epson S1R72104 Technical Manual

S1R72104 Technical Manual

5. PIN DESCRIPTION

The control signal with "X" at the head of a pin name is LOW-active.
Pin No. Symbol
SCSI interface-related matters (18)
97 XSDB0
95 XSDB1
92 XSDB2
90 XSDB3
88 XSDB4
86 XSDB5
84 XSDB6
81 XSDB7
79 XSDBP
77 XSATN
73 XSBSY
71 XSACK
69 XSRST
68 XSMSG
66 XSSEL
65 XSCD
63 XSREQ
61 XSIO
Port interface-related matters (20)
38 XPRD
39 XPWR
40 PDREQ
37 XPDACK
42 PD0
44 PD1
47 PD2
49 PD3
53 PD4
55 PD5
57 PD6
59 PD7
58 PD8
56 PD9
54 PD10
52 PD11
48 PD12
46 PD13
43 PD14
41 PD15
4
I/O
Is/Otr SCSI data signal (SD0 to SD7)
SCSI data parity signal
I/Ood SCSI ATN signal
I/Ood SCSI BSY signal
Is/Otr SCSI ACK signal
I/Ood SCSI RST signal
I/Ood SCSI MSG signal
I/Ood SCSI SEL signal
I/Ood SCSI C/D signal
Is/Otr SCSI REQ signal
I/Ood SCSI I/O signal
Is/O Port lead signal
Is/O Port right signal
Is/O Port DMA request signal (also operable in negative logic)
Is/O Port DMA ACK signal
I/O Port DMA data bus signal (PD0 to 15)
Functional description
EPSON
Remarks
Drive capability 48mA
Drive capability 48mA
Drive capability 48mA
Drive capability 48mA
Drive capability 48mA
Drive capability 48mA
Drive capability 48mA
Drive capability 48mA
Drive capability 48mA
Drive capability 48mA
Drive capability 48mA
Drive capability 3mA
Drive capability 3mA
Drive capability 6mA
Drive capability 3mA
Drive capability 3mA
Rev.1.1