Catalyst BT Design-in Guide (Rev B)
3.3 Communications................................................................................................ 30
3.3.1 PCI Express ..................................................................................................... 30
3.3.2 USB .............................................................................................................. 31
3.3.3 Gigabit Ethernet .............................................................................................. 31
3.3.4 I
2
C Bus .......................................................................................................... 32
3.3.5 SPI Bus (BIOS) .................................................................................................. 32
3.3.6 System Management Bus ..................................................................................... 32
3.4 Display and User Interface ................................................................................... 33
3.4.1 DDI (Digital Display Interface) .............................................................................. 33
3.4.2 LVDS Display and Backlight Control ........................................................................ 33
3.4.3 Analog VGA .................................................................................................... 34
3.5 Inputs and Outputs ............................................................................................ 34
3.5.1 Low Pin Count Bus ............................................................................................ 34
3.5.2 Reset Signals ................................................................................................... 35
3.5.3 General-Purpose Input and Output ......................................................................... 35
3.6 Intel High Definition Audio ................................................................................... 35
3.7 Power Requirements .......................................................................................... 36
3.7.1 Low Power States ............................................................................................. 36
3.7.2 Power Supply Architecture .................................................................................. 36
4 MECHANICAL SPECIFICATIONS ............................................................................................. 45
4.1 Mechanical Design ............................................................................................. 45
4.1.1 Mechanical Drawing .......................................................................................... 45
4.1.2 Total Stack Height ............................................................................................ 46
4.1.3 Mounting ....................................................................................................... 47
4.1.4 Insertion and Removal ....................................................................................... 47
4.2 Thermal Management ......................................................................................... 48
5 CARRIER BOARD DESIGN .................................................................................................. 51
5.1 Design Guidelines .............................................................................................. 51
5.1.1 Design Constraints ............................................................................................ 51
5.1.2 EMI/RFI Protection ............................................................................................ 51
5.1.3 Routing Guidelines ............................................................................................ 52
5.1.4 Power Planes .................................................................................................. 53
5.1.5 Requirements and Recommendations ...................................................................... 53
5.2 Test and Debug ................................................................................................. 54
6 CONNECTORS .............................................................................................................. 55
6.1 Identifying Connectors ........................................................................................ 55
6.2 Signal Headers .................................................................................................. 56
6.2.1 J1: Docking Connector: Data .............................................................................. 56
6.2.2 J2: Docking Connector: Power ............................................................................. 56
6.2.3 J3: ITP Debug Port ........................................................................................... 57
7 SYSTEM SPECIFICATIONS .................................................................................................. 59
7.1 Power Supply ................................................................................................... 59
7.2 Electrical ........................................................................................................ 60
7.2.1 PCIe Clock Buffer ............................................................................................. 60
7.2.2 Universal Serial Bus .......................................................................................... 60
7.2.3 I
2
C Bus .......................................................................................................... 60
7.2.4 SMBus ........................................................................................................... 61
7.2.5 LVDS Display and Backlight .................................................................................. 61
7.2.6 General-purpose Inputs and Outputs ...................................................................... 61
7.2.7 Intel High Definition Audio .................................................................................. 62
7.3 General .......................................................................................................... 62
7.3.1 Crystal Frequencies ........................................................................................... 62
7.3.2 Real-Time Clock ............................................................................................... 63
7.4 Environmental .................................................................................................. 63
4 / 78