Vecow SPC-3000, Руководство пользователя

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78 GETTING TO KNOW YOUR SPC-3000/3500
©Vecow SPC-3000/3500 User Manual
2.4.6 CN4 : Mini PCIe, mSATA
Connector Pin No. Description Pin No. Description
JUSB2
1 USB_VCC 6 USB_D_7N
2 USB_VCC 7 USB_D_7P
3 USB_VCC 8 GND
4 USB_D_6N 9 GND
5 USB_D_6P 10 GND
Both mSATA and Mini PCIe share the same form factor and similar electrical
pinout assignments on their connectors. There was no clear mechanism to
distinguish if a mSATA drive or a Mini PCIe device is plugged into the socket
until recently that SATA I/O issued an ECN change (ECN #045) to redefine pin-
43 on mSATA connector as “no connect” instead of “return current path” (or
GND).
When an mSATA drive is inserted, its pin-43 is “no connect”, and the respective
pin on the socket is being pulled-up to logic 1. When a Mini PCIe device is
inserted, its pin-43 forces the respective pin on the socket to ground, or logic 0.
2
1
2
10
1
9
CN4