WM8602SEDSSLASHV datasheet(37/46 Pages) WOLFSON

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WM8602

PP Rev 1.5 May 2004

BIT

LABEL

DEFAULT

DESCRIPTION

STDBY

Standby select:

0 : Normal Mode

1: Standby Mode

OPDISR

Output disable register

0: Normal mode

1: PWM output disabled

R29 (1Dh)

Power Down

MENA

OPDIS Mode

0 : Synchronous

1: Latched, reset via Control I/F

Table 48 Power Down

EXTERNAL APPLICATION POWER-DOWN (EAPDB) PIN

The state of the output pin EAPDB shows whether the device is disabled (i.e. OPDIS input pin active

or STDBY register set).

EAPDB

STATE

DESCRIPTION

The device is operating

correctly

External

Application

Power Down

(default)

The outputs are disabled or

the WM8602 device is in

Standby (default) mode

Table 49 EAPDB Pin

RESET

The WM8602 device can be reset writing to the Reset register as defined in Table 50.

BIT

LABEL

DEFAULT

DESCRIPTION

RLENA

Writing 1 to bit 0 of the register will

reset OPDIS

R30 (1Eh)

Reset

all

RESET

Writing all 1’s to the register will

reset the device and register

settings

Table 50 Reset

Note: RESET or RLENA will be applied at the end of the register write and released at the beginning

of the next register write. I.e. to reset the OPDIS register write 1 to bit 0 of the Reset register and

them write 0 to bit 0.

EXTERNAL POWER SUPPLY CLOCK

The WM8602 device can generate a clock signal for an external PSU (Power Supply Unit) which is

available at the CLKPSU pin.

CLKPSU

PCLKPSU

HCLKPSU

Figure 23 External Power Supply Clock

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