STA027 datasheet(25/44 Pages) STMICROELECTRONICS

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STA027

5 Register description

CD00066274

25/44

Note:

that embedded default configuration for GPSO can be retrieved by user thanks to following

setting :

–

GPSO_CONF = b00000011;

Note:

that embedded default configuration for PCM block is described at previous chapter.

5.5.2

GPSO_CONF :

Address : 0x6A (106)

Type : RW - DEC

Software Reset : 0

Description :

If OUTPUT_CONF == 1, this register configure the GPSO interface

Table 13.

OC1

Use of block PCM to generate clocks (PCMCK, LRCK & BCK):

0 : no use.

1 : use it.

OC2

Configuration of PCM block:

0 : take embedded default configuration.

1 : configure PCM block from PCM_DIV & PCM_CONF registers.

CF7

CF6

CF5

CF4

CF3

CF2

CF1

CF0

Bit fields

Comment

CF0

Polarity of GPSO_CK :

0 : data provided on rising edge & stable on falling edge

1 : data provided on falling edge & stable on rising edge

CF1

Polarity of GPSO_REQ :

0 : data are valid when GPSO_REQ is high

1 : data are valid when GPSO_REQ is low

CF[7:2]

Reserved : to be set to 0.

Table 12.

Bit fields

Comment

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