m37280eksp Mitsumi Electronics, Corp., m37280eksp Datasheet - Page 64

• Manufacturer Part Number: m37280eksp
• Description: Single-chip 8-bit Cmos Microcomputer With Closed Caption Decoder And On-screen Display Controller
• Manufacturer: Mitsumi Electronics, Corp.

Table 12.10.2 Contents of Caption Data Latch Completion Flag and 16-bit Shift Register
12.10.11 16-bit Shift Register
The caption data converted into a digital value by the comparator is
stored into the 16-bit shift register in synchronization with the data
clock. The contents of the high-order 8 bits of the stored caption data
can be obtained by reading out data register 2 (address 00E3
data register 4 (address 00E5
bits can be obtained by reading out data register 1 (address 00E2
and data register 3 (address 00E4
are reset to “0” at a falling of V
after the occurrence of a data slicer interrupt (refer to “12.10.12 In-
terrupt Request Generating Circuit”).
CPS: Caption position register
DSC2: Data slicer control register 2
Table 12.10.3 Occurence Sources of Interrupt Request
64
Slice Line Specification Mode
Caption position register
bit 7
0
0
1
1
b7
0
1
CPS
bit 6
0
1
0
1
b6
0
1
0
1
16
sep
). The contents of the low-order 8
. Read out data registers 1 and 2
16
Contents of Caption Data Latch Completion Flag
), respectively. These registers
Completion Flag 1
A line specified by
After slicing line 21
After a line specified by bits 4 to 0 of CPS
After slicing line 21
After slicing line 21
bits 4 to 0 of CPS
(bit 0 of DSC2)
Line 21
Line 21
Line 21
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
Occurence Souces of Interrupt Request at End of Data Slice Line
M37280MF–XXXSP, M37280MK–XXXSP
16
) and
Completion Flag 2
A line specified by
A line specified by
bits 4 to 0 of CPS
bits 4 to 0 of CPS
16
(bit 5 of CPS)
)
Invalid
Invalid
12.10.12 Interrupt Request Generating Circuit
The interrupt requests as shown in Table 12.10.3 are generated by
combination of the following bits; bits 6 and 7 of the caption position
register (address 00E6
to 4 and the contents of bits 3 to 7 of the clock run-in detect register
after the occurrence of a data slicer interrupt request.
16-bit data of a line specified
16-bit data of line 21
16-bit data of line 21
16-bit data of line 21
and ON-SCREEN DISPLAY CONTROLLER
by bits 4 to 0 of CPS
Registers 1, 2
Caption Data
MITSUBISHI MICROCOMPUTERS
16
Contents of 16-bit Shift Register
). Read out the contents of data registers 1
M37280EKSP
16-bit data of a line specified by
16-bit data of a line specified by
Registers 3, 4
bits 4 to 0 of CPS
bits 4 to 0 of CPS
Caption Data
Invalid
Invalid
Rev. 1.0