PCIe

PCIe x4 connector above the Communication Processor (PCI) connector on a TMU-520

PCIe

Bus, resembling Conventional PCIe x4 1.0, partly connected to South Bridge, with 200 exposed pads.
Can be activated by setting the repository node sys.lv1.iosys.pciex to 1. The PCIe MMIO address space can be extended to 1GB by setting sys.lv1.large_pciex to 1.

200-pin layout

CN4351 200P on DECR-1000 TMU-520

Pin	Usage	Standardized Pinout	Remark
1	GND
2	GND
3	?	REFCLK+ ?	to clock chip
4	GND
5	?	REFCLK- ?	to clock chip
6	GND
7	GND
8	GND
9	GND
10	GND
11	GND
12	GND
13	GND
14	GND
15	PEXPERPA[0]	HSIp(0)
16	GND
17	PEXPERNA[0]	HSIn(0)
18	GND
19	GND
20	GND
21	GND
22	GND
23	GND
24	GND
25	GND
26	GND
27	PEXPERPA[1]	HSIp(1)
28	GND
29	PEXPERNA[1]	HSIn(1)
30	GND
31	GND
32	GND
33	GND
34	GND
35	GND
36	GND
37	GND
38	GND
39	PEXPERPA[2]	HSIp(2)
40	GND
41	PEXPERNA[2]	HSIn(2)
42	GND
43	GND
44	GND
45	GND
46	GND
47	GND
48	GND
49	GND
50	GND
51	PEXPERPA[3]	HSIp(3)
52	GND
53	PEXPERNA[3]	HSIn(3)
54	GND
55	GND
56	GND
57	GND
58	GND
59	GND
60	GND
61	GND
62	GND
63	PEXPETPA[0]	HSOp(0)
64	GND
65	PEXPETNA[0]	HSOn(0)
66	GND
67	GND
68	GND
69	GND
70	GND
71	GND
72	GND
73	GND
74	GND
75	PEXPETPA[1]	HSOp(1)
76	GND
77	PEXPETNA[1]	HSOn(1)
78	GND
79	GND
80	GND
81	GND
82	GND
83	GND
84	GND
85	GND
86	GND
87	PEXPETPA[2]	HSOp(2)
88	GND
89	PEXPETNA[2]	HSOn(2)
90	GND
91	GND
92	GND
93	GND
94	GND
95	GND
96	GND
97	GND
98	GND
99	PEXPETPA[3]	HSOp(3)
100	GND
101	PEXPETPA[3]	HSOn(3)
102	GND
103	GND
104	GND
105	GND
106	GND
107	GND
108	GND
109	GND
110	GND
111	GND
112	GND
113	GND
114	GND
115	?	SMDAT ?	to smbus chip
116	GND
117	GND
118	GND
119	GND
120	GND
121	GND
122	GND
123	GND
124	GND
125	NC
126	NC
127	+3.3V?
128	+3.3V?
129	NC
130	NC
131	GND
132	GND
133	GND
134	GND
135	GND
136	GND
137	NC
138	NC
139	+3.3V?
140	+3.3V?
141	+3.3V?
142	+3.3V?
143	+3.3V?
144	+3.3V?
145	+3.3V?
146	+3.3V?
147	+3.3V?
148	+3.3V?
149	+3.3V?
150	+3.3V?
151	+3.3V?
152	+3.3V?
153	+3.3V?
154	+3.3V?
155	+3.3V?
156	+3.3V?
157	+3.3V?
158	+3.3V?
159	NC
160	NC
161	+3.3V?
162	+3.3V?
163	+3.3V?
164	+3.3V?
165	+3.3V?
166	+3.3V?
167	NC
168	NC
169	+12V?
170	+12V?
171	+12V?
172	+12V?
173	+12V?
174	+12V?
175	+12V?
176	+12V?
177	+12V?
178	+12V?
179	+12V?
180	+12V?
181	+12V?
182	+12V?
183	+12V?
184	+12V?
185	+12V?
186	+12V?
187	+12V?
188	+12V?
189	+12V?
190	+12V?
191	+12V?
192	+12V?
193	+12V?
194	+12V?
195	NC
196	NC
197	GND
198	GND
199	GND
200	GND