WM8959 datasheet(57/155 Pages) WOLFSON

57 / 155 page

Pre-Production

WM8959

PP, May 2008, Rev 3.1

OUTPUT SIGNAL PATHS ENABLE

The output mixers and drivers can be independently enabled and disabled as described in Table 23.

Note that the headphone outputs LOUT and ROUT have dedicated volume controls. As a result, the

output PGAs LOPGA and ROPGA do not need to be enabled to provide volume control for the LOUT

and ROUT outputs.

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

LON_ENA

(rw)

LON Line Out and LONMIX Enable

0 = disabled

1 = enabled

LOP_ENA

(rw)

LOP Line Out and LOPMIX Enable

0 = disabled

1 = enabled

RON_ENA

(rw)

RON Line Out and RONMIX Enable

0 = disabled

1 = enabled

ROP_ENA

(rw)

ROP Line Out and ROPMIX Enable

0 = disabled

1 = enabled

SPKPGA_ENA

(rw)

SPKMIX Mixer and Speaker PGA Enable

0 = disabled

1 = enabled

Note that SPKMIX and SPKPGA are also

enabled when SPK_ENA is set.

LOPGA_ENA

(rw)

LOPGA Left Volume Control Enable

0 = disabled

1 = enabled

ROPGA_ENA

(rw)

ROPGA Right Volume Control Enable

0 = disabled

1 = enabled

LOMIX_ENA

(rw)

LOMIX Left Output Mixer Enable

0 = disabled

1 = enabled

R3 (03h)

ROMIX_ENA

(rw)

ROMIX Right Output Mixer Enable

0 = disabled

1 = enabled

SPK_ENA

(rw)

SPKMIX Mixer, Speaker PGA and Speaker

Output Enable

0 = disabled

1 = enabled

OUT3_ENA

(rw)

OUT3 and OUT3MIX Enable

0 = disabled

1 = enabled

OUT4_ENA

(rw)

OUT4 and OUT4MIX Enable

0 = disabled

1 = enabled

LOUT_ENA

(rw)

LOUT (Left Headphone Output) Enable

0 = disabled

1 = enabled

R1 (01h)

ROUT_ENA

(rw)

ROUT (Right Headphone Output) Enable

0 = disabled

1 = enabled

Table 23 Output Signal Paths Enable

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