13892 datasheet(64/75 Pages) FREESCALE

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Analog Integrated Circuit Device Data

Freescale Semiconductor

13892

FUNCTIONAL DEVICE OPERATION

Because of an order from the United States International Trade Commission, BGA-packaged product lines and part numbers indicated here currently are not

available from Freescale for import or sale in the United States prior to September 2010: MC13892VK and MC13892VL in 139, 186 MAPBGA packages.

Figure 13. 13892 USB Interface Block Diagram

OTG MODE (ON THE GO)

The ID detector is primarily used to determine if a mini-A

or mini-B style plug has been inserted into a mini-AB style

receptacle on the application. However, it also supports two

additional modes which are outside of the USB standards: a

factory mode, and a non-USB accessory mode. The state of

the ID detection can be read via the SPI to poll dedicated

sense bits for a floating, grounded, or factory mode condition

on the UID pin. There are also dedicated maskable interrupts

for each UID condition as well.

Since portable applications have limited capabilities, this

supplement to the USB2.0 specification was developed in

order to allow a portable device to take the role of a USB host.

In this mode of operation, SWBST is internally switched to

supply the VUSB regulator, and SWBST will drive VBUS from

the VUSBIN pin as long as VBUSEN pin is a logic high = 1.

According to the USB2.0 specification, the USB host is the

device where the USB Host Controller is installed, through

which it interacts with the USB devices. The USB host is

responsible for:

• Detecting the attachment and removal of USB devices.

• Managing control flow between the host and USB devices.

• Managing data flow between the host and USB devices.

• Collecting status and activity statistics.

• Providing power to attached USB devices.

When working in host mode, VUSB is supplied from the

VBUS wire of the USB cable (VBUS).

Parameter

Condition

Min

Typ

Max

Units

VBUS input impedance

As A_device

100

UID 220K Pull-up(57)

IDPUCNTRL=0, Resistor to VCORE

132

220

308

UID Pull-up(57)

IDPUCNTRL=1, Current source from VCORE

4.75

5.25

UID Parallel Pull-up(57)

ID100KPU=1, Resistor to VCORE

100

140

Notes

57.

Note that the UID Pull-ups are not mutually exclusive of each other, they are independently controlled by their enable bits and thus

multiple pull-ups can be engaged simultaneously.

13892 Datasheet(PDF) 64 Page - Freescale Semiconductor, Inc

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