GS4910B GENNUM [Gennum Corporation], GS4910B Datasheet - Page 101

• Manufacturer Part Number: GS4910B
• Description: HD/SD/Graphics Clock and Timing Generator with GENLOCK
• Manufacturer: GENNUM [Gennum Corporation]

Table 3-13: Configuration and Status Registers (Continued)
Register Name
V_Start_3
V_Stop_3
Operator_Polarity_3
Address
63h
63h
64h
64h
65h
65h
65h
65h
65h
36655 - 2
15-4
Bit
15
14-0
15
14-0
3
2
1
0
April 2006
Reserved. Set these bits to zero when writing to 65h.
Description
Reserved. Set this bit to zero when writing to 63h.
The value programmed in this register indicates the start
line number of the leading edge of the
user-programmed V Sync signal USER3_V. For
interlaced output standards, this value corresponds to
the odd field line number.
NOTE: The value programmed in this register must be
less than the value programmed in V_Stop_3.
Reference:
Reserved. Set this bit to zero when writing to 64h.
The value programmed in this register indicates the end
line number of the trailing edge of the user-programmed
V Sync signal USER3_V. For interlaced output
standards, this value corresponds to the odd field line
number.
NOTE: The value programmed in this register must not
exceed the maximum number of lines per field of the
outgoing standard.
Reference:
Polarity_3 - Use this bit to invert the polarity of the final
USER3 signal.
By default, the polarity of the user programmed signals
is active LOW. The polarity may be switched to active
HIGH by setting this bit LOW.
Reference:
AND_3 - logical operator: USER3_H AND USER3_V
Set this bit HIGH to output a signal that is only active
when both USER3_H and USER3_V are active.
When this bit is HIGH, bit 1 and bit 0 of this register will
be ignored.
Reference:
OR_3 - logical operator: USER3_H OR USER3_V
Set this bit HIGH to output a signal that is active
whenever USER3_H or USER3_V are active.
When this bit is HIGH bit 0 of this register will be
ignored.
Reference:
XOR_3 - logical operator: USER3_H XOR USER3_V
Set this bit HIGH to output a signal with the following
attributes: Signal becomes active when either
USER3_H or USER3_V is active. Signal is inactive
when USER3_H and USER3_V are both active or both
inactive.
Reference:
Section 3.8.3 on page 69
Section 3.8.3 on page 69
Section 3.8.3 on page 69
Section 3.8.3 on page 69
Section 3.8.3 on page 69
Section 3.8.3 on page 69
GS4911B/GS4910B Data Sheet
R/W
–
R/W
–
R/W
–
R/W
R/W
R/W
R/W
Default
–
0
–
0
–
1
0
0
0
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