GS4900B Datasheet, PDF (81/102 Pages) Semtech Corporation – SD Clock and Timing Generator with GENLOCK

Table 3-13: Configuration and Status Registers (Continued)
Register Name
Output_Select_2
Output_Select_3
Output_Select_4
Address
44h
44h
44h
45h
45h
45h
46h
46h
46h
Bit
15-5
4
3-0
15-5
4
3-0
15-5
4
3-0
Description
Reserved. Set these bits to zero when writing to
44h.
Current_2 - selects the current drive capability of
the TIMING_OUT_2 pin. Set this bit HIGH for high
current drive. Otherwise, the current drive will be
low.
Reference: Section 3.8.4 on page 62
This register is used to select one of the 10
pre-programmed or 4 user programmed timing
signals available for output on the TIMING_OUT_2
pin. See Table 3-11 for more details.
Note: The default setting of this register is 0010b,
which corresponds to H Blanking.
Reference: Section 3.8.4 on page 62
Reserved. Set these bits to zero when writing to
45h.
Current_3 - selects the current drive capability of
the TIMING_OUT_3 pin. Set this bit HIGH for high
current drive. Otherwise, the current drive will be
low.
Reference: Section 3.8.4 on page 62
This register is used to select one of the 10
pre-programmed or 4 user programmed timing
signals available for output on the TIMING_OUT_3
pin. See Table 3-11 for more details.
Note: The default setting of this register is 0011b,
which corresponds to V Sync.
Reference: Section 3.8.4 on page 62
Reserved. Set these bits to zero when writing to
46h.
Current_4 - selects the current drive capability of
the TIMING_OUT_4 pin. Set this bit HIGH for high
current drive. Otherwise, the current drive will be
low.
Reference: Section 3.8.4 on page 62
This register is used to select one of the 10
pre-programmed or 4 user programmed timing
signals available for output on the TIMING_OUT_4
pin. See Table 3-11 for more details.
Note: The default setting of this register is 0100b,
which corresponds to V Blanking.
Reference: Section 3.8.4 on page 62
R/W
–
R/W
R/W
–
R/W
R/W
–
R/W
R/W
Default
–
0
0010b
–
0
0011b
–
0
0100b
GS4901B/GS4900B SD Clock and Timing Generator
with GENLOCK
Data Sheet
37703 - 4
December 2009
81 of 102