21

1

FIELD Detect

Select

This bit specifies whether an odd or even field is starting when the leading edge of HSYNC

occurs within the FIELD Detect Window. It is ignored unless HSYNC and VSYNC are config-

ured as inputs.

0 = odd field

1 = even field

0

Field Detect

Window Size High

This bit is cascaded with Field Detect Window Size Low to form a 9-bit Field Detect Window Size

value. This bit is ignored unless HSYNC and VSYNC are configured as inputs.

TABLE 39. FIELD CONTROL REGISTER 2

BIT

NUMBER

FUNCTION

DESCRIPTION

RESET

STATE

TABLE 40. PHASE INCREMENT REGISTER 0

BIT

NUMBER

FUNCTION

DESCRIPTION

RESET

STATE

7-0

PHINC 0

(LSB)

The 8-bit registers PHINC 0–3 are cascaded together to form a 32-bit PHINC value. The

PHINC value is the phase increment value of the color subcarrier generation NCO. When the

BT.656 ancillary data is selected as the PHINC source, the PHINC registers may be read to

determine the last PHINC value loaded via the selected interface.

TABLE 41. PHASE INCREMENT REGISTER 1

BIT

NUMBER

FUNCTION

DESCRIPTION

RESET

STATE

7-0

PHINC 1

The 8-bit registers PHINC 0–3 are cascaded together to form a 32-bit PHINC value. The

PHINC value is the phase increment value of the color subcarrier generation NCO. When the

BT.656 ancillary data is selected as the PHINC source, the PHINC registers may be read to

determine the last PHINC value loaded via the selected interface.

TABLE 42. PHASE INCREMENT REGISTER 2

BIT

NUMBER

FUNCTION

DESCRIPTION

RESET

STATE

7-0

PHINC 2

The 8-bit registers PHINC 0–3 are cascaded together to form a 32-bit PHINC value. The

PHINC value is the phase increment value of the color subcarrier generation NCO. When the

BT.656 ancillary data is selected as the PHINC source, the PHINC registers may be read to

determine the last PHINC value loaded via the selected interface.

TABLE 43. PHASE INCREMENT REGISTER 1

BIT

NUMBER

FUNCTION

DESCRIPTION

RESET

STATE

7-0

PHINC 3

(MSB)

The 8-bit registers PHINC 0–3 are cascaded together to form a 32-bit PHINC value. The

PHINC value is the phase increment value of the color subcarrier generation NCO. When the

BT.656 ancillary data is selected as the PHINC source, the PHINC registers may be read to

determine the last PHINC value loaded via the selected interface.

HMP8190, HMP8191