WM9712CLGEFLSLASHV datasheet(68/78 Pages) WOLFSON

68 / 78 page

WM9712L

Production Data

PD, Rev 4.6, November 2011

controls the SPDIF output.

REG

ADDR

BIT

LABEL

DEFAULT

DESCRIPTION

REFER TO

3Ah

Validity bit; ‘0’ indicates frame valid, ‘1’ indicates frame not

valid

Digital Audio

(SPDIF)

Output

DRS

Indicates that the WM9712L does not support double rate

SPDIF output (read-only)

13:12

SPSR

Indicates that the WM9712L only supports 48kHz sampling

on the SPDIF output (read-only)

Generation level; programmed as required by user

10:4

0000000

Category code; programmed as required by user

PRE

Pre-emphasis; ‘0’ indicates no pre-emphasis, ‘1’ indicates

50/15us pre-emphasis

COPY

indicates copyright

AUDIB

Non-audio; ‘0’ indicates data is PCM, ‘1’ indicates non-

PCM format (e.g. DD or DTS)

PRO

Professional; ‘0’ indicates consumer, ‘1’ indicates

professional

control the GPIO pins and virtual GPIO signals.

REG

ADDR

BIT

LABEL

DEFAULT

DESCRIPTION

REFER TO

4Ch

please

refer to

the

map

all 1 (all inputs)

except unused

bits

Controls GPIO configuration as inputs or as outputs (note:

virtual GPIOs can only be inputs)

GPIO and

Interrupt

Control

4Eh

all 1

Controls GPIO polarity (actual polarity depends on register

4Ch AND register 4Eh)

50h

all 0 (not sticky)

Makes GPIO signals sticky

52h

all 0 (OFF)

Enables wake-up for each GPIO signal

54h

= status of GPIO

inputs

GPIO pin status (read from inputs, write ‘0’ to clear sticky bits)

Controls Comparator 1 signal (virtual GPIO)

Controls Comparator 2 signal (virtual GPIO)

Controls Pen-Down Detector signal (virtual GPIO)

Controls ADA signal (virtual GPIO)

Controls Thermal sensor signal (virtual GPIO)

10-6

Unused

Controls GPIO5 (pin 48)

Controls GPIO4 (pin 47)

Controls GPIO3 (pin 46)

Controls GPIO2 (pin 45)

Controls GPIO1 (pin 44)

controls the use of GPIO pins for non-GPIO functions.

REG

ADDR

BIT

LABEL

DEFAULT

DESCRIPTION

REFER TO

56h

GE5

1 (GPIO)

Selects between GPIO5 and SPDIF_OUT function for pin 48

GPIO and

Interrupt

Control

GE4

1 (GPIO)

Selects between GPIO4 and ADA/MASK functionS for pin 47

GE3

1 (GPIO)

Selects between GPIO3 and PENDOWN function for pin 46

GE2

1 (GPIO)

Selects between GPIO2 and IRQ function for pin 45

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