WM9715L datasheet(5/77 Pages) WOLFSON

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Production Data

WM9715L

PD Rev 4.0 December 2007

PIN DESCRIPTION

NAME

TYPE

DESCRIPTION

DBVDD

Supply

Digital I/O Buffer Supply

XTLIN

Digital Input

Clock Crystal Connection 1 / External Clock Input

XTLOUT

Digital Output

Clock Crystal Connection 2

DGND1

Supply

Digital Ground (return path for both DCVDD and DBVDD)

SDATAOUT

Digital Input

Serial Data Output from Controller / Input to WM9715L

BITCLK

Digital Output

Serial Interface Clock Output to Controller

DGND2

Supply

Digital Ground (return path for both DCVDD and DBVDD)

SDATAIN

Digital Output

Serial Data Input to Controller / Output from WM9715L

DCVDD

Supply

Digital Core Supply

SYNC

Digital Input

Serial Interface Synchronisation Pulse from Controller

RESETB

Digital Input

Reset (asynchronous, active Low, resets all registers to their default)

WIPER / AUX4

Analogue Input

Top Sheet Connection for 5-wire Touchpanels / Auxiliary ADC Input

TPVDD

Supply

Touchpanel Driver Supply

X+/BR

Analogue Input

Touchpanel Connection: X+ (Right) for 4-wire / bottom right for 5-wire

Y+/TR

Analogue Input

Touchpanel Connection: Y+ (Top) for 4-wire / top right for 5-wire

X-/TL

Analogue Input

Touchpanel Connection: X- (Left) for 4-wire / top left for 5-wire

Y-/BL

Analogue Input

Touchpanel Connection: Y- (Bottom) for 4-wire / bottom left for 5-wire

TPGND

Supply

Touchpanel Driver Ground

PCBEEP

Analogue Input

Line Input to analogue audio mixers, typically used for beeps

PHONE

Analogue Input

Phone Input (RX)

MIC1

Analogue Input

Left Microphone or Microphone 1 Input

MIC2

Analogue Input

Right Microphone or Microphone 2 Input

LINEINL

Analogue Input

Left Line Input

LINEINR

Analogue Input

Right Line Input

AVDD

Supply

Analogue Supply (feeds audio DACs, ADCs, PGAs, mic boost,

mixers)

AGND

Supply

Analogue Ground

VREF

Analogue Output

Internal Reference Voltage (buffered CAP2)

MICBIAS

Analogue Output

Bias Voltage for Microphones (buffered CAP2

× 1.8)

COMP1 / AUX1

Analogue Input

Comparator 1 (dead battery alarm) / Auxiliary ADC Input 1

COMP2 / AUX2

Analogue Input

Comparator 2 (low battery alarm) / Auxiliary ADC Input 2

BMON / AUX3

Analogue Input

Battery Monitor Input / Auxiliary ADC Input 3

CAP2

Analogue In / Out

Internal Reference Voltage (normally AVDD/2, if not overdriven)

MONOOUT

Analogue Output

Mono Output, intended for Phone TX signal

SPKGND

Supply

Speaker Ground (feeds output buffers on pins 35 and 36)

LOUT2

Analogue Output

Left Output 2 (Speaker, Line or Headphone)

ROUT2

Analogue Output

Right Output 2 (Speaker, Line or Headphone)

OUT3

Analogue Output

Analogue Output 3 (from AUXDAC or headphone pseudo-ground)

SPKVDD

Supply

Speaker Supply (feeds output buffers on pins 35 and 36)

HPOUTL

Analogue Output

Headphone Left Output

HPGND

Supply

Headphone Ground (feeds output buffers on pins 37, 39, 41)

HPOUTR

Analogue Output

Headphone Right Output

AGND2

Supply

Analogue Ground, Chip Substrate

HPVDD

Supply

Headphone Supply (feeds output buffers on pins 37, 39, 41)

DNC

Do not connect

Leave this pin unconnected

GENIRQ

Digital In / Out

General IRQ (Interrupt Request) Output

PENDOWN

Digital Output

Indicates that screen is being touched

ADCIRQ

Digital In / Out

AUXADC “data ready” interrupt; also determines power up status.

(See “Power Management” and “Applications” sections)

SPDIF_OUT

Digital In / Out

SPDIF Digital Audio Output

Note: It is recommended that the QFN ground paddle should be connected to analogue ground on the application PCB.

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