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28.12.2
Pin Configuration
Table 28.16 summarizes the pin configuration of the additional V signal.
Table 28.16 Pin Configuration
Name
Abbrev.
I/O
Function
Additional V pulse pin
Vpulse
Output
Output of additional V signal synchronized to
VideoFF
28.12.3
Register Configuration
Table 28.17 summarizes the register that controls the additional V signal.
Table 28.17 Register Configuration
Name
Abbrev.
R/W
Size
Initial Value
Address
Additional V control register
ADDVR
R/W
Byte
H'E0
H'FD06F
28.12.4
Register Description
Additional V Control Register (ADDVR)
0
0
1
0
R/W
2
0
R/W
3
0
4
0
R/W
5
1
6
7
—
—
—
—
—
—
R/W
R/W
HMSK
HiZ
CUT
VPON
POL
1
1
Bit :
Initial value :
R/W :
ADDVR is an 8-bit readable/writable register. It is initialized to H'E0 by a reset, and in standby
mode.
Bits 7 to 5: Reserved
Writes are disabled. If a read is attempted, an undefined value is read out.
Bit 4: OSCH Mask Bit (HMSK)
Masks the OSCH signal in the additional V pulse.
Содержание Hitachi H8S/2191
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