WM8803 Просмотр технического описания (PDF) - Wolfson Microelectronics plc

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WM8803

Digital Audio Interface Receiver

Wolfson Microelectronics plc 

WM8803

The low power modes are listed in Table 1.

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MODE

(1)

(2)

(3)

PDB

L

AMPOPR

×

0

0

(4)

0

H

(5)

0

(6)

1

(7)

1

Table 1 Low Power Modes

PLLOPR

×

0

1

×

×

0

1

PDOWN1

×

0

0

0

1

0

×

PDOWN0

×

0

0

1

0

0

×

FUNCTION

Reset (stand-by)

Normal operation

VCO stopped.

All circuits except the oscillator

amplifier stopped.

All circuits except the oscillator

amplifier and divider circuit stopped.

Oscillator amplifier stopped.

All circuits stopped.

The table below lists the output pin states in the above modes.

OUTPUT PIN

AUDIOB

UGPIB

CLKOUT

BCLK

LRCLK

SDATO

XOUT

ERROR

E/INT

MODE (1)

L

H

L

L

L

L

H

H

L

MODE (2)

Output

Output

Output

Output

Output

Output

Output

Output

Output

Table 2 Output Pin States in Modes (1) to (7)

MODE (3)

L

Output

Output

Output

Output

Output

Output

H

L

MODE (4)

L

Output

Output

L

L

L

Output

H

L

MODE (5)

L

Output

Output

Output

Output

Output

Output

H

L

MODE (6)

Output

Output

Output

Output

Output

Output

H

Output

Output

MODE (7)

L

Output

L

L or H

L or H

L

H

H

L

Notes:

1. In modes (3), (4), and (5), the clock supplied to XIN is used as the source.

2. Mode (3) applies in the state where an external clock other than CLKOUT is supplied to XIN. If XIN and CLKOUT are

connected, no clock signals are output in this mode.

3. Mode (6) applies when the PLL circuit is locked. When the PLL circuit is unlocked, all circuits will go to the stopped state

since no clock signal is supplied to XIN.

4. In mode (7), the states immediately prior to entering mode (7) will be retained.

w

PP Rev 1.1 September 2003

10

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