User Manual

PCI Express MiniCard Hardware Integration Guide
6 Proprietary and confidential 213XXXX
Power Interface...........................................................................................................................20
Overview of operation .....................................................................................................20
EM power signals ................................................................................................20
Electrostatic discharge ........................................................................................20
EM power state transitions..............................................................................................21
DISCONNECTED state.......................................................................................21
OFF state ............................................................................................................21
NORMAL state ....................................................................................................21
LOW BATTERY state..........................................................................................21
SHUTDOWN ROUTINE state .............................................................................22
EMERGENCY SHUTDOWN state ......................................................................22
Inrush currents ................................................................................................................22
Current consumption.......................................................................................................25
Modes..................................................................................................................25
Shutdown.................................................................................................26
Slotted mode sleep and dormant mode...................................................26
Deep sleep...............................................................................................27
Usage models .....................................................................................................28
Back-power issues..........................................................................................................28
Preventing back-power when the modem is off...................................................28
Host Interface..............................................................................................................................29
Operation modes.................................................................................................29
USB interface..................................................................................................................29
Physical layer...........................................................................................30
POWER and RESET handshaking protocols ..........................................31
USB handshaking................................................................................................32
Suspending..............................................................................................32
Resume ...................................................................................................32
Host USB driver requirements.................................................................33
LED output ..........................................................................................................33
XIM Interface...................................................................................................................34
XIM notes of operation ........................................................................................35
Acronyms and definitions............................................................................................................37