Specifications

CORONA User Manual Rev A.11 www.diamondsystems.com Page 16
6.8 SUMIT-A Expansion Bus (J11)
The SUMIT-A stackable bus is a 52-pin connector. Corona uses the following SUMIT bus functions:
1 PCIe x1 lane
3 USB 2.0 channels
Corona’s signal assignments of the SUMIT-A connector appear in below. Note: For more information on the
SUMIT specification, visit the SFF-SIG website at http://www.sff-sig.org.
+5VSB
1
2
+12V
3.3V
3
4
SMB/I2C_DATA
3.3V
5
6
SMB/I2C_CLK
EXPCD_REQ#
7
8
SMB/I2C_ALERT#
EXPCD_PRSNT#
9
10
SPI/uWire_DO
USB_OC#
11
12
SPI/uWire_DI
Reserved
13
14
SPI/uWire_CLK
+5V
15
16
SPI/uWire_CS0#
USB3+
17
18
SPI/uWire_CS1#
USB3-
19
20
Reserved
+5V
21
22
LPC_DRQ
USB2+
23
24
LPC_AD0
USB2-
25
26
LPC_AD1
+5V
27
28
LPC_AD2
USB1+
29
30
LPC_AD3
USB1-
31
32
LPC_FRAME#
+5V
33
34
SERIRQ#
USB0+
35
36
LPC_PRSNT# / Ground
USB0-
37
38
CLK_33MHz
Ground
39
40
Ground
A_PETp0
41
42
A_PERp0
A)PETn0
43
44
A_PERn0
Ground
45
46
APRSNT# / Ground
PERST#
47
48
A_CLKp
WAKE#
49
50
A_CLKn
+5V
51
52
Ground