GS4910B GENNUM [Gennum Corporation], GS4910B Datasheet - Page 86

• 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
N
D
v
v
Address
21h-20h
23h-22h
36655 - 2
Bit
31-0
31-0
April 2006
Description
A non-zero number programmed in this register defines
the numerator for the ratio of the video clock to the
27MHz reference.
This register can be used for creating custom video
clock frequencies.
NOTE: Once this register is programmed, it must be
updated using bit 6 of register 16h.
The default value of this register will vary depending on
the output video standard selected.
Address 20h = bits 15-0
Address 21h = bits 31-16
Reference:
A non-zero number programmed in this register defines
the denominator for the ratio of the video clock to the
27MHz reference.
This register can be used for creating custom video
clock frequencies.
NOTE: Once this register is programmed, it must be
updated using bit 6 of register 16h.
The default value of this register will vary depending on
the output video standard selected.
Address 22h = bits 15-0
Address 23h = bits 31-16
Reference:
Section 3.9.1 on page 72
Section 3.9.1 on page 72
GS4911B/GS4910B Data Sheet
R/W
R/W
R/W
Default
–
–
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