ARM AMBA NIC-301 Especificações descarregar pdf (Página 171)

HDLCD controller

ID062813 Non-Confidential

Polarities Register

The POLARITIES Register characteristics are:

Purpose Controls the polarities of the synchronization signals and PXLCLK that

is exported from the CoreTile Express A15×2 daughterboard.

Usage constraints There are no usage constraints.

Configurations Available in all HDLCD controller configurations.

Attributes See Table B-1 on page B-3.

Figure B-19 shows the bit assignments.

Figure B-19 Polarities Register bit assignments

Table B-20 shows the bit assignments.

Command Register

The COMMAND Register characteristics are:

Purpose Starts and stops the LCD controller.

Usage constraints There are no usage constraints.

Configurations Available in all HDLCD controller configurations.

31 543210

PXLCK_POLARITY

DATA_POLARITY

DATAEN_POLARITY

HSYNC_POLARITY

VSYNC_POLARITY

Table B-20 Polarities Register bit assignments

Bits Name Function

[31:5] - Reserved, write as zero, read undefined.

[4] PXLCLK_POLARITY Holds the value of the PXLCLKPOL output. This is intended to be used for controlling the polarity

of the pixel clock that is exported from the CoreTile Express A15×2 daughterboard.

Note

• PXLCLK_POLARITY=

;

— PXLCLK (HDLCD) and MMB_IDCLK, export, are the same polarity.

• PXLCLK_POLARITY=

;

— PXLCLK (HDLCD) and MMB_IDCLK, export, are the opposite polarity.

[3] DATA_POLARITY Holds active level of DATA output.

[2] DATAEN_POLARITY Holds active level of DATAEN output.

[1] HSYNC_POLARITY Holds active level of HSYNC output.

[0] VSYNC_POLARITY Holds active level of VSYNC output.

1 2 ... 166 167 168 169 170 171 172 173 174 175 176 177 178

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ARM AMBA NIC-301 Especificações Página 171