ABCDEFGHIJKLMNOPQRSTUVWXYZ
1
DC-SCI Pin Definition 
2
The DC-SCI connector pinout includes the single name (preferred board net name that include functional and directional nomenclature), gold finger lengths, single node usages, voltage, direction, typical usages and dual node usage.
3
The contact sequence for each pin indicates the order in which the pins make contact between the HPM and the DC-SCM. The GND pins are required to be long pins or 1st mate. The PRSNT0_N/ PRSNT1_N pins and P12V_AUX pins are required to be short pins or 2nd mate. However, the remaining pins indicated as 2nd mate can be flexibly assigned as long pins/1st mate if dictated by design or DFM requirements.
4
Multi-function DC-SCI pins list the functions in order starting with the most typical expected usage.
5
When multiple voltages are listed for a signal, they map the respective alternate pin function order.
6
7
DC-SCI Signal Descriptions 
8
The following sections provide the signal descriptions of signals through the DC-SCI. 
The signal names are constructed using the notation of:
9
 function_(bus source)_(signal source)_(signal destination)_Instance#_Node#_Polarity  
10
 Node 1 omits the Node #. Functions with only 1 instance do not include 0. Polarity of active low uses the *_N naming.
11
Note: Follow device datasheet recommendations to appropriately terminate un-used signals on the DC-SCM. 
12
Abbreviation Definition: 
13
Symbol Description
14
_N or #  Denotes active low signal
15
Input  Input to DC-SCM
16
Output  Output from DC-SCM
17
InOut At least one of the functions is a bidirectional signal
18
CHANGES MADE
88
10/12/2021 0.95g
Removed voltages from LTPI and PCIe since they aren't DC 1.8V.; Fixed missing A69 clock name; Clarified USB2.0 power domains for each of the exclusive modes/directions); Addded some dual node stats
89
10/25/2021 0.95h Updated I2C_I3C naming and bus numbering; Swapped UART1 RX and TX to better align with the direction of the 2 alt functions
90
91
OPENVague future request for SGMII (instead of NC-SI2?). Seek use cases and proposal for where it could live without diruption (e.g. SGMII diff pair GNDs on NC-SI2 pins are used as signals).
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169