IBM PC 300GL manual Vref, GND CK2, SA0 SDA, SA0 VDD

Table 21. System memory connector pin input/output

Pin	Signal name	I/O	Pin	Signal name	I/O
54	GND	N/A	138	GND	N/A
55	MD16	I/O	139	MD48	I/O
56	MD17	I/O	140	MD49	I/O
57	MD18	I/O	141	MD50	I/O
58	MD19	I/O	142	MD51	I/O
59	VDD	N/A	143	VDD	N/A
60	MD20	I/O	144	MD52	I/O
61	CKE1	N/A	145	NC	N/A
62	VREF	N/A	146	VREF	N/A
63	(CKE1)*	N/A	147	NC	N/A
64	GND	N/A	148	GND	N/A
65	MD21	I/O	149	MD53	I/O
66	MD22	I/O	150	MD54	I/O
67	MD23	I/O	151	MD55	I/O
68	GND	N/A	152	GND	N/A
69	MD24	I/O	153	MD56	I/O
70	MD25	I/O	154	MD57	I/O
71	MD26	I/O	155	MD58	I/O
72	MD27	I/O	156	MD59	I/O
73	VDD	N/A	157	VDD	N/A
74	MD28	I/O	158	MD60	I/O
75	MD29	I/O	159	MD61	I/O
76	MD30	I/O	160	MD62	I/O
77	MD31	I/O	161	MD63	I/O
78	GND	N/A	162	GND	N/A
79	CK2	O	163	CK3	O
80	NC	N/A	164	NC	N/A
81	NC	O	165	SA0	O
82	SDA	O	166	SA1	O
83	SCL	O	167	SA0	O
84	VDD	N/A	168	VDD	N/A

Appendix A. Connector pin assignments 39