M37160M8 Datasheet, PDF (58/131 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

M37160M8/MA/MF-XXXSP/FP,M37160EFSP/FP
The vertical display start position for each block can be set in 512
steps (where each step is 1TH (TH: HSYNC cycle)) as values “0016” to
“FF16” in vertical position register i (i = 1 and 2) (addresses 00D416
and 00D516) and values “0” or “1” in bit 6 of block control register i (i
= 1 and 2) (addresses 00D216 and 00D316). The vertical position
register is shown in Figure 8.10.8.
The vertical display start position of both blocks can be switched in
each step to 1TH or 2TH by setting values “0” or “1” in bit 1 of OSD
control register 2 (address 00DB16).
Vertical Position Register i
b7 b6 b5 b4 b3 b2 b1 b0
Vertical position register i (VPi) (i = 1 and 2) [Addresses 00D416, 00D516]
B
Name
Functions
0 Vertical display start
to position control bits
7 (VPi0 to VPi7)
(See notes)
Vertical display start position =
TH ✕ (BCi6 ✕ 16² + n)
(n: setting value, TH: HSYNC cycle,
BCi6: bit 6 of block control register i)
Notes 1: Set values except “0016” to VPi when BCi6 is “0.”
2: When OS21 of OSD control register 2 = “0”, TH = 1HSYNC,
and OS21 of OSD control register 2 = “1”, TH = 2HSYNC.
After reset _{R W}
Inderterminate R W
Fig. 8.10.8 Vertical Position Register i (i = 1 and 2)
Rev.1.01 2003.11.13 page 58 of 130