ADE3800XT datasheet(41/138 Pages) STMICROELECTRONICS

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ADE3800

SMEAS_STATUS_MASKa

0119

R/W

[7]

Enable mute function to respond to

SMEAS_STATUS_RANGE[6] (hpol).

R/W

[6]

Enable mute function to respond to

SMEAS_STATUS_RANGE[5] (vpol).

R/W

[4]

Enable mute function to respond to

SMEAS_STATUS_RANGE[4] (fastmute).

R/W

[3]

Enable mute function to respond to

SMEAS_STATUS_RANGE[3] (xpervhi).

R/W

[2]

Enable mute function to respond to

SMEAS_STATUS_RANGE[2] (hperv).

R/W

[1]

Enable mute function to respond to

SMEAS_STATUS_RANGE[1] (xperh).

R/W

[0]

Enable mute function to respond to

SMEAS_STATUS_RANGE[0] (xperv).

SMEAS_H_NUM_LINES

011A

R/W

[7:0]

Number of lines to measure for Horizontal period per Xclks,

actual value = programmed value +1. Range 1 – 256.

Provides for a more accurate measurement.

SMEAS_H_SKIP_L

SMEAS_H_SKIP_U

011B

011C

R/W

[7:0]

[3:0]

Number of horizontal reference edges to skip from selected

vertical reference edge before starting horizontal

measurement.

SMEAS_HV_SKEWb

011D

[7:0]

Returns the minimum number of xclks between edges of the

selected hsync and vsync. Does not care about polarity.

Free running, updates once per frame.

SMEAS_XK_HTOL_EXP

012C

R/W

[3:0]

Horizontal tolerance value. +/- 2^n xclks, n=[0..15]

SMEAS_XK_VTOL_EXP

012D

R/W

[3:0]

Vertical tolerance value. +/- 2^n xclks, xk_v_high counter use

this tolerance value as well. n=[0..15]

SMEAS_HSYNC_VTOL

012E

R/W

[3:0]

Horizontal per Vertical tolerance value.

+/-n H(rising,falling) per V(rising,falling)

SMEAS_FASTMU_CTRL

0130

R/W

[6:5]

fastmute coast

0*: llk coast (normal)

1: inverted venab

2, 3: no coast (always active)

R/W

[2:1]

error count

0*: first error sets fastmute flag

1: two errors in a row needed to set fastmute

2: three errors in a row needed to set fastmute

3: reserved

R/W

[0]

fastmute enable

SMEAS_POL

0131

[1]

Horizontal polarity

0: active low (-), 1 = active high (+)

[0]

Vertical polarity

0: active low (-), 1 = active high (+)

SMEAS_FASTMU_TOL

0134

R/W

[3:0]

Tolerance for fast mute check +/-n xclks, n=[0..15]

Table 17: SMEAS Register Definitions (Sheet 4 of 6)

Addr

Mode

Bits

Rst

Description

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