MC13783 查看數據表（PDF） - Freescale Semiconductor

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MC13783

Power Management and Audio Circuit

Freescale Semiconductor 

Signal Descriptions

1.5 Miscellaneous Functions

The drivers and comparators for a USB On-the-Go and a CEA-936-A compatible USB carkit including

audio routing, as well as RS232 interfaces are provided. Special precautions are taken to allow for specific

booting and accessory detection modes.

Current sources are provided to drive tricolored funlights and signaling LEDs. The funlights have

preprogrammed lighting patterns. The wide programmability of the tricolored LED drivers allows for

applications such as audio modulation. Three backlight drivers with auto dimming are included as well for

keypad and dual display backlighting.

A dedicated interface in combination with the A to D converter allow for precise resistive touchscreen

reading. Pen touch wake up is included.

2 Signal Descriptions

The below pinout description gives the pin name per functional block with its row-column coordinates, its

maximum voltage rating, and a functional description.

Table 1. Pinout Listing

Pin

Location Rating*

Function

Charger

CHRGRAW

A18

EHV 1. Charger input

A19

2. Output to battery supplied accessories

B19

CHRGCTRL

C18

EHV Driver output for charger path FETs M1 and M2

BPFET

B15

EHV 1. Driver output for dual path regulated BP FET M4

2. Driver output for separate USB charger path FETs M5 and M6

CHRGISNSP

B17

MV Charge current sensing point 1

CHRGISNSN

C14

MV Charge current sensing point 2

BP

B13

MV 1. Application supply point

2. Input supply to the MC13783 core circuitry

3. Application supply voltage sense

BATTFET

A12

MV Driver output for battery path FET M3

BATTISNS

A14

MV Battery current sensing point 1

BATT

D15

MV 1. Battery positive terminal

2. Battery current sensing point 2

3. Battery supply voltage sense

CHRGMOD0

D17

LV Selection of the mode of charging

CHRGMOD1

A16

LV Selection of the mode of charging

* The maximum voltage rating is given per category of pins:

• EHV for Extended High Voltage (20 V)

• HV for High Voltage (7.5 V)

• EMV for Extended Medium Voltage (5.5 V)

• MV for Medium Voltage (4.65 V)

• LV for Low Voltage (3.1 V)

MC13783 Technical Data, Rev. 3.5

6

Freescale Semiconductor

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