AD9380/PCB Analog Devices Inc, AD9380/PCB Datasheet - Page 40

• Manufacturer Part Number: AD9380/PCB
• Description: BOARD EVALUATION FOR AD9380
• Manufacturer: Analog Devices Inc

Specifications of AD9380/PCB

• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

AD9380
0x15—Bit[6] HSYNC 1 Detection Bit
This bit is used to indicate when activity is detected on the
HSYNC 1 input pin. If HSYNC is held high or low, activity is
not detected. The sync processing block diagram shows where
this function is implemented. 0 = HSYNC 1 not active.
1 = HSYNC 1 is active.
0x15—Bit[5] VSYNC 0 Detection Bit
This bit is used to indicate when activity is detected on the
VSYNC0 input pin. If VSYNC is held high or low, activity is not
detected. Figure 8 shows where this function is implemented.
0 = VSYNC 0 not active. 1 = VSYNC 0 is active.
0x15—Bit[4] VSYNC 1 Detection Bit
This bit is used to indicate when activity is detected on the
VSYNC1 input pin. If VSYNC is held high or low, activity is not
detected. Figure 8 shows where this function is implemented.
0 = VSYNC1 not active. 1 = VSYNC1 is active.
0x15—Bit[3] SOG 0 Detection Bit
This bit is used to indicate when activity is detected on the
SOG 0 input pin. If SOG is held high or low, activity is not
detected. Figure 8 shows where this function is implemented.
0 = SOG 0 not active. 1 = SOG0 is active.
0x15—Bit[2] SOG 1 Detection Bit
Indicates if SOG 1 is active. This bit is used to indicate when
activity is detected on the SOG 1 input pin. If SOG is held high
or low, activity is not detected. Figure 8 shows where this
function is implemented. 0 = SOG 1 not active. 1 = SOG 1 is
active.
0x15—Bit[1] Coast Detection Bit
This bit detects activity on the EXTCLK/COAST pin. It
indicates that one of the two signals is active, but it doesn’t
indicate if it is EXTCLK or COAST. A dc signal is not detected.
0 = no activity detected. 1 = activity detected.
POLARITY STATUS
0x16—Bit[7] HSYNC 0 Polarity
Indicates the polarity of the HSYNC0 input. 0 = HSYNC
polarity negative. 1 = HSYNC polarity positive.
0x16—Bit[6] HSYNC 1 Polarity
Indicates the polarity of the HSYNC1 input. 0 = HSYNC
polarity negative. 1 = HSYNC polarity positive.
0x16—Bit[5] VSYNC 0 Polarity
Indicates the polarity of the VSYNC0 input. 0 = VSYNC
polarity negative. 1 = VSYNC polarity positive.
0x16—Bit[4] VSYNC 1 Polarity
Indicates the polarity of the VSYNC1 input. 0 = VSYNC
polarity negative. 1 = VSYNC polarity positive.
Rev. 0 | Page 40 of 60
0x16—Bit[3] Coast Polarity
Indicates the polarity of the external coast signal. 0 = coast
polarity negative. 1 = coast polarity positive.
0x16—Bit[2] Pseudo Sync Detected
This bit indicates that a pulse other than an expected HSYNC
has occurred.
0x16—Bits[1] Sync Filter Locked
Indicates whether sync filter is locked to periodic sync signals.
0 = sync filter locked to periodic sync signal. 1 = sync filter not
locked.
0x16—Bit[0] Bad Sync Detect
This bit indicates when an HSYNC has occurred outside the
filter window.
0x17—Bits[3:0] HSYNCs per VSYNC MSBs
The 4 MSBs of the 12-bit counter that reports the number of
HSYNCs/VSYNC on the active input. This is useful in deter-
mining the mode and an aid in setting the PLL divide ratio.
0x18—Bits[7:0] HSYNCs per VSYNC LSBs
The 8 LSBs of the 12-bit counter that reports the number of
HSYNCs/VSYNC on the active input.
0x19—Bits[7:0] Clamp Placement
Number of pixel clocks after trailing edge of HSYNC to begin
clamp. The power-up default is 8.
0x1A—Bits[7:0] Clamp Duration
Number of pixel clocks to clamp. The power-up default is 0x14.
0x1B—Bit[7] Red Clamp Select
This bit selects whether the red channel is clamped to ground or
midscale. Ground clamping is used for red in RGB applications
and midscale clamping is used in YPrPb (YUV) applications.
0 = channel clamped to ground during clamping period.
1 = channel clamped to midscale during clamping period.
The power-up default is 0.
0x1B—Bit[6] Green Clamp Select
This bit selects whether the green channel is clamped to ground
or midscale. Ground clamping is normally used for green in
RGB applications and YPrPb (YUV) applications. 0 = channel
clamped to ground during clamping period. 1 = channel
clamped to midscale during clamping period. The power-up
default is 0.
0x1B—Bit[5] Blue Clamp Select
This bit selects whether the blue channel is clamped to ground
or midscale. Ground clamping is used for blue in RGB
applications and midscale clamping is used in YPrPb (YUV)
applications. 0 = channel clamped to ground during clamping
period. 1 = channel clamped to midscale during clamping
period. The power-up default is 0.