Pin Definition
The Atlas 300I inference card (model 3000) complies with the standard PCIe card protocol (PCI Express Card Electromechanical Specification Revision 3.0) and provides PCIe x16 physical ports. The main data signals are as follows:
- PCIe 3.0 x8, with a maximum rate of 8 Gbit/s, is used to transmit service data.
- SMbus, with a maximum rate of 100 kbit/s, is used for the out-of-band management unit to monitor the Atlas 300I inference card (model 3000).
For details about the signal allocation of the Atlas 300I inference card (model 3000), see Table 6-1 to Table 6-5.
No. |
Pin Name |
Description |
Handling Method |
|
|---|---|---|---|---|
Side B |
1 |
+12V |
12 V power |
12 V power |
2 |
+12V |
12 V power |
||
3 |
+12V |
12 V power |
||
4 |
GND |
Ground |
Grounded |
|
5 |
SMCLK |
SMBus clock |
Access |
|
6 |
SMDAT |
SMBus data |
Access |
|
7 |
GND |
Ground |
Grounded |
|
8 |
+3.3V |
3.3 V power |
3.3 V power |
|
9 |
JTAG1 |
TRST signal |
Floated |
|
10 |
3.3Vaux |
3.3 V auxiliary power |
||
11 |
WAKE# |
Link reactivation signal |
||
Side A |
1 |
PRSNT1# |
Hot swap presence detection 1# |
Presence detection |
2 |
+12V |
12 V power |
12 V power |
|
3 |
+12V |
12 V power |
||
4 |
GND |
Ground |
Grounded |
|
5 |
JTAG2 |
TCK signal |
Floated |
|
6 |
JTAG3 |
TDI signal |
||
7 |
JTAG4 |
TDO signal |
||
8 |
JTAG5 |
TMS signal |
||
9 |
+3.3V |
3.3 V power |
3.3 V power |
|
10 |
+3.3V |
3.3 V power |
||
11 |
PERST# |
Basic reset |
Board resetting |
|
No. |
Pin Name |
Description |
Handling Method |
|
|---|---|---|---|---|
Side B |
12 |
RSVD |
Reserved |
Floated |
13 |
GND |
Ground |
Grounded |
|
14 |
PETp0 |
TX differential pair PCIe_TX_0 |
Connected to Ascend 310 1: TX0 |
|
15 |
PETn0 |
|||
16 |
GND |
Ground |
Grounded |
|
17 |
PRSNT2# |
Hot swap presence detection 2# |
Floated |
|
18 |
GND |
Ground |
Grounded |
|
Side A |
12 |
GND |
Ground |
Grounded |
13 |
REFCLK+ |
Reference clock differential pair |
The board provides differential 100 MHz clocks that support PCIe 3.0/2.0/1.0 and SSC. |
|
14 |
REFCLK- |
|||
15 |
GND |
Ground |
Grounded |
|
16 |
PERp0 |
RX differential pair PCIe_RX_0 |
Connected to Ascend 310 1: RX0 |
|
17 |
PERn0 |
|||
18 |
GND |
Ground |
Grounded |
|
No. |
Pin Name |
Description |
Handling Method |
|
|---|---|---|---|---|
Side B |
19 |
PETp1 |
TX differential pair PCIe_TX_1 |
Connected to Ascend 310 1: TX1 |
20 |
PETn1 |
|||
21 |
GND |
Ground |
Grounded |
|
22 |
GND |
Ground |
Grounded |
|
23 |
PETp2 |
TX differential pair PCIe_TX_2 |
Connected to Ascend 310 2: TX0 |
|
24 |
PETn2 |
|||
25 |
GND |
Ground |
Grounded |
|
26 |
GND |
Ground |
Grounded |
|
27 |
PETp3 |
TX differential pair PCIe_TX_3 |
Connected to Ascend 310 2: TX1 |
|
28 |
PETn3 |
|||
29 |
GND |
Ground |
Grounded |
|
30 |
RSVD |
Reserved |
Floated |
|
31 |
PRSNT2# |
Hot swap presence detection 2# |
Floated |
|
32 |
GND |
Ground |
Grounded |
|
Side A |
19 |
RSVD |
Floated |
|
20 |
GND |
Ground |
Grounded |
|
21 |
PERp1 |
RX differential pair PCIe_RX_1 |
Connected to Ascend 310 1: RX1 |
|
22 |
PERn1 |
|||
23 |
GND |
Ground |
Grounded |
|
24 |
GND |
Ground |
Grounded |
|
25 |
PERp2 |
RX differential pair PCIe_RX_2 |
Connected to Ascend 310 2: RX0 |
|
26 |
PERn2 |
|||
27 |
GND |
Ground |
Grounded |
|
28 |
GND |
Ground |
Grounded |
|
29 |
PERp3 |
RX differential pair PCIe_RX_3 |
Connected to Ascend 310 2: RX1 |
|
30 |
PERn3 |
|||
31 |
GND |
Ground |
Grounded |
|
32 |
RSVD |
Reserved |
Floated |
|
No. |
Pin Name |
Description |
Handling Method |
|
|---|---|---|---|---|
Side B |
33 |
PETp4 |
TX differential pair PCIe_TX_4 |
Connected to Ascend 310 3: TX0 |
34 |
PETn4 |
|||
35 |
GND |
Ground |
Grounded |
|
36 |
GND |
Ground |
Grounded |
|
37 |
PETp5 |
TX differential pair PCIe_TX_5 |
Connected to Ascend 310 3: TX1 |
|
38 |
PETn5 |
|||
39 |
GND |
Ground |
Grounded |
|
40 |
GND |
Ground |
Grounded |
|
41 |
PETp6 |
TX differential pair PCIe_TX_6 |
Connected to Ascend 310 4: TX0 |
|
42 |
PETn6 |
|||
43 |
GND |
Ground |
Grounded |
|
44 |
GND |
Ground |
Grounded |
|
45 |
PETp7 |
TX differential pair PCIe_TX_7 |
Connected to Ascend 310 4: TX1 |
|
46 |
PETn7 |
|||
47 |
GND |
Ground |
Grounded |
|
48 |
PRSNT2# |
Hot swap presence detection 2# |
Floated |
|
49 |
GND |
Ground |
Grounded |
|
Side A |
33 |
RSVD |
Reserved |
Floated |
34 |
GND |
Ground |
Grounded |
|
35 |
PERp4 |
RX differential pair PCIe_RX_4 |
Connected to Ascend 310 3: RX0 |
|
36 |
PERn4 |
|||
37 |
GND |
Ground |
Grounded |
|
38 |
GND |
Ground |
Grounded |
|
39 |
PERp5 |
RX differential pair PCIe_RX_5 |
Connected to Ascend 310 3: RX1 |
|
40 |
PERn5 |
|||
41 |
GND |
Ground |
Grounded |
|
42 |
GND |
Ground |
Grounded |
|
43 |
PERp6 |
RX differential pair PCIe_RX_6 |
Connected to Ascend 310 4: RX0 |
|
44 |
PERn6 |
|||
45 |
GND |
Ground |
Grounded |
|
46 |
GND |
Ground |
Grounded |
|
47 |
PERp7 |
RX differential pair PCIe_RX_7 |
Connected to Ascend 310 4: RX1 |
|
48 |
PERn7 |
|||
49 |
GND |
Ground |
Grounded |
|
No. |
Pin Name |
Description |
Handling Method |
|
|---|---|---|---|---|
Side B |
50 |
PETp8 |
TX differential pair PCIe_TX_8 |
Floated |
51 |
PETn8 |
|||
52 |
GND |
Ground |
Grounded |
|
53 |
GND |
Ground |
Grounded |
|
54 |
PETp9 |
TX differential pair PCIe_TX_9 |
Floated |
|
55 |
PETn9 |
|||
56 |
GND |
Ground |
Grounded |
|
57 |
GND |
Ground |
Grounded |
|
58 |
PETp10 |
TX differential pair PCIe_TX_10 |
Floated |
|
59 |
PETn10 |
|||
60 |
GND |
Ground |
Grounded |
|
61 |
GND |
Ground |
Grounded |
|
62 |
PETp11 |
TX differential pair PCIe_TX_11 |
Floated |
|
63 |
PETn11 |
|||
64 |
GND |
Ground |
Grounded |
|
65 |
GND |
Ground |
Grounded |
|
66 |
PETp12 |
TX differential pair PCIe_TX_12 |
Floated |
|
67 |
PETn12 |
|||
68 |
GND |
Ground |
Grounded |
|
69 |
GND |
Ground |
Grounded |
|
70 |
PETp13 |
TX differential pair PCIe_TX_13 |
Floated |
|
71 |
PETn13 |
|||
72 |
GND |
Ground |
Grounded |
|
73 |
GND |
Ground |
Grounded |
|
74 |
PETp14 |
TX differential pair PCIe_TX_14 |
Floated |
|
75 |
PETn14 |
|||
76 |
GND |
Ground |
Grounded |
|
77 |
GND |
Ground |
Grounded |
|
78 |
PETp15 |
TX differential pair PCIe_TX_15 |
Floated |
|
79 |
PETn15 |
|||
80 |
GND |
Ground |
Grounded |
|
81 |
PRSNT2# |
Hot swap presence detection 2# |
PCIe card connection |
|
82 |
RSVD |
Reserved |
Floated |
|
Side A |
50 |
RSVD |
Reserved |
Floated |
51 |
GND |
Ground |
Grounded |
|
52 |
PERp8 |
RX differential pair PCIe_RX_8 |
Floated |
|
53 |
PERn8 |
|||
54 |
GND |
Ground |
Grounded |
|
55 |
GND |
Ground |
Grounded |
|
56 |
PERp9 |
RX differential pair PCIe_RX_9 |
Floated |
|
57 |
PERn9 |
|||
58 |
GND |
Ground |
Grounded |
|
59 |
GND |
Ground |
Grounded |
|
60 |
PERp10 |
RX differential pair PCIe_RX_10 |
Floated |
|
61 |
PERn10 |
|||
62 |
GND |
Ground |
Grounded |
|
63 |
GND |
Ground |
Grounded |
|
64 |
PERp11 |
RX differential pair PCIe_RX_11 |
Floated |
|
65 |
PERn11 |
|||
66 |
GND |
Ground |
Grounded |
|
67 |
GND |
Ground |
Grounded |
|
68 |
PERp12 |
RX differential pair PCIe_RX_12 |
Floated |
|
69 |
PERn12 |
|||
70 |
GND |
Ground |
Grounded |
|
71 |
GND |
Ground |
Grounded |
|
72 |
PERp13 |
RX differential pair PCIe_RX_13 |
Floated |
|
73 |
PERn13 |
|||
74 |
GND |
Ground |
Grounded |
|
75 |
GND |
Ground |
Grounded |
|
76 |
PERp14 |
RX differential pair PCIe_RX_14 |
Floated |
|
77 |
PERn14 |
|||
78 |
GND |
Ground |
Grounded |
|
79 |
GND |
Ground |
Grounded |
|
80 |
PERp15 |
RX differential pair PCIe_RX_15 |
Floated |
|
81 |
PERn15 |
|||
82 |
GND |
Ground |
Grounded |
|