Mini PCI Express Bus

MiniCard For NoteBook Computers

[MiniCard Bus Description]
[MiniCard Interface ICs] [MiniCard Connectors]
[OnLine Mini PCI Express Standards] [Pinout]
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Mini PCI Express Bus Description

A Brief Description of the MiniCard interface. MiniCard is also called Mini PCI Express bus [PCI= Peripheral Component Interface].
The Minicard is a small form factor board used to implement the PCI Express interface on Notebook computers.
MiniCard is used to implement both the 1x PCI Express Bus interface and a USB 2.0 interface.
The card size is 30mm wide by 50.95mm long by 5mm high.
The Minicard uses a 52-pin card edge connector, the card pins are fingers at the edge of the card.





Mini PCI Express Bus Interface IC Manufacturers

Refer to the main PCI Express Bus for a list of manufacturers producing interface IC's
Like other PC buses, there are no glue logic devices just ASICs and chip sets in PCI Express; Similar to PCI.
Refer to the LVDS page for additional information on the LVDS electrical interface.
This topic provides a comparison of Interface Switching levels for different types of electrical standards.

{Mini PCI Bus Index}


Mini-PCI Express Online Standards and Specifications

PCI: The original specification 'Peripheral Component Interface', [parallel interface]
PCI Express Bus: [used in desktop computers, the physical layer is not compatible with the PCI bus]
PCIe Mini Card Electromechanical Specification [used in Notebook/Laptop computers]

PCISIG {Peripheral Component Interconnect - Special Interest Group}

{MiniCard Bus Index}


Mini PCI Express Connector Manufacturers

A Mini-PCI Express connector accepts a 52-pin card edge with one key slot.
The Board has fingers at the card edge, the card key is an absence of fingers.





Mini PCI Express Pinout

MiniPCIe Implementation
Mini PCI Express




The Mini-PCI Express 52-pin connector pin out is listed below. I still need to verify the pin out table for errors.

MiniCard Pinout
Pin # Signal Name Pin # Signal Name
51 Reserved 52 +3.3V
49 50 GND
47 48 +1.5V
45 46 LED_WPAN#
43 44 LED_WLAN#
41 42 LED_WWAN#
39 40 GND
37 38 USB_D+
35 GND 36 USB_D-
33 PETp0 34 GND
31 PETn0 32 SMB_DATA
29 GND 30 SMB_CLK
27 GND 28 +1.5V
25 PERp0 26 GND
23 PERn0 24 +3.3Vaux
21 GND 22 PERST#
19 Reserved (UIM_C4) 20 Reserved
17 Reserved (UIM_C8) 18 GND
Mechanical Key
15 GND 16 UIM_VPP
13 REFCLK+ 14 UIM_RESET
11 REFCLK- 12 UIM_CLK
9 GND 10 UIM_DATA
7 CLKREQ# 8 UIM_PWR
5 Reserved 6 1.5V
3 Reserved 4 GND
1 WAKE# 2 3.3V

{Back to the MiniCard Bus Index}


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Modified 2/26/12
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