13892 datasheet(46/75 Pages) FREESCALE

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Analog Integrated Circuit Device Data

Freescale Semiconductor

13892

FUNCTIONAL DESCRIPTION

FUNCTIONAL PIN DESCRIPTION

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.

USB

UID

This pin identifies if a mini-A or mini-B style plug has been

connected to the application. 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.

UVBUS

1. USB transceiver cable interface.

2. OTG supply output.

When SWBST is configured to supply the UVBUS pin in

OTG mode, the feedback will switch to sense the UVBUS pin

instead of the SWBSTFB pin.

VUSB

This is the regulator used to provide a voltage to an

external USB transceiver IC.

VINUSB

Input option for VUSB; supplied by SWBST. This pin is

internally connected to the UVBUS pin for OTG mode

operation (for more details about OTG mode See OTG mode

(On the Go) on page 64).

Note: When VUSBIN =1 , UVBUS will be connected via

internal switches to VINUSB and incur some current drain on

that pin, as much as 270uA maximum, so care must be taken

to disable this path and set this SPI bit (VUSBIN) to 0 to

minimize current drain, even if SWBST and/or VUSB are

disabled.

VBUSEN

External VBUS enable pin for the OTG supply. VBUS is

defined as the power rail of the USB cable (+5.0 V).

A TO D CONVERTER

Note: The ADIN5/6/7 inputs must not exceed BP.

ADIN5

ADC generic input channel 5. ADIN5 may be used as a

general purpose unscaled input, but in a typical application,

ADIN5 is used to read out the battery pack thermistor. The

thermistor must be biased with an external pull-up to a

voltage rail greater than the ADC input range. In order to save

current when the thermistor reading is not required, it can be

biased from one of the general purpose IOs such as GPO1.

A resistor divider network should assure the resulting voltage

falls within the ADC input range, in particular when the

thermistor check function is used.

ADIN6

ADC generic input channel 6. ADIN6 may be used as a

general purpose unscaled input, but in a typical application,

the PA thermistor is connected here.

ADIN7

ADC generic input channel 7, group 1. ADIN7 may be

used as a general purpose unscaled input or as a divide by 2

scaled input. In a typical application, an ambient light sensor

is connected here.

A second general purpose input ADIN7B is available on

channel 7. This input is muxed on the GPO4 pin. In the

application, a second ambient light sensor is supposed to be

connected here.

TSX1 AND TSX2, TSY1 AND TSY2

Note: The TS[xy] [12] inputs must not exceed BP or

VCORE.

Touch Screen Interfaces X1 and X2, Y1 and Y2. The touch

screen X plate is connected to TSX1 and TSX2, while the Y

plate is connected to Y1 and Y2. In inactive mode, these pins

can also be used as general purpose ADC inputs. They are

respectively mapped on ADC channels 4, 5, 6, and 7.

In interrupt mode, a voltage is applied to the X-plate

(TSX2) via a weak current source to VCORE, while the Y-

plate is connected to ground (TSY1).

Table 11. UID Pin Levels

UID PIN EXTERNAL CONNECTION

UID PIN VOLTAGE

ACCESSORY

Resistor to Ground

0.18*VCORE<UID<0.77*VCORE

Non-USB accessory is attached

Grounded

0<UID<0.12*VCORE

A type plug (USB Host)

Floating

0.89*VCORE<UID<VCORE

B type plug (USB peripheral, OTG device or

no device) is attached

Voltage Applied

3.6 V<UID(51)

Factory mode

Notes

51.

UID maximum voltage is 5.25 V

13892 Datasheet(PDF) 46 Page - Freescale Semiconductor, Inc

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