ADE3700XT 查看數據表（PDF） - STMicroelectronics

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ADE3700XT

Analog LCD Display Engine for XGA and SXGA Resolutions

STMicroelectronics 

ADE3700

Register Name

SMEAS_STATUS_RANGE

SMEAS_MEAS_POLLING

SMEAS_SKEW_STATUS

Sync Measurement

Table 9: Sync Measurement (Sheet 7 of 8)

Addr

0x0152

0x0153

0x0154

Mode Bits Default

Description

R

[7]

0x0

In free-running mode any of the status bits

can change at the end of each

measurement. In one shot mode any of the

status bits can change at the completion of

the measurement. The

MEAS_STICKY_STATUS bit is a bitwise OR

of bits[3:0] (before the bitwise OR, the mask

in SMEAS_STATUS_MASK is AND in) and

is sticky. The only way to reset it is for

software to write a zero into this bit. This bit

goes to the scaler to blank the scaler output.

A write to this reg will reset it to 0.

R

[6]

0x0

Indicates that one of the measured polarities

does not match the reference value.

R

[5]

0x0

Hsync (selected by SMEAS_H_SEL)

polarity.

0: active low

1: active high

R

[4]

0x0

Vsync (selected by SMEAS_V_SEL)

polarity.

0: active low

1: active high

R

[3]

0x0

Indicates that the vertical pulse width

measurement exceeded the reference ±

tolerance range.

R

[2]

0x0

Indicates that the horizontal per vertical

measurement exceeded the reference ±

tolerance range.

R

[1]

0x0

Indicates that the XCLKs per horizontal

measurement exceeded the reference ±

tolerance range.

R

[0]

0x0

Indicates that the XCLKs per vertical

measurement exceeded the reference ±

tolerance range.

[7:2] 0x0

Reserved

R

[1]

0x0

Toggle on h meas free-running mode, at end

of each meas. No function on one-shot

mode.

R

[0]

0x0

Toggle on v meas free-running mode, at end

of each meas. No function on one-shot

mode.

[7:2] 0x0

Reserved

R

[1]

0x0

0: hsync to vsync skew above threshold

1: hsync to vsync skew below threshold

R

[0]

0x0

0: skew measurement running

1: skew measurement finished

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