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M37150MC Datasheet(PDF) 59 Page - Renesas Technology Corp |
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M37150MC Datasheet(HTML) 59 Page - Renesas Technology Corp |
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59 / 141 page  M37150M6/M8/MA/MC/MF-XXXFP, M37150EFFP Rev.1.00 Nov 01, 2002 page 59 of 139 REJ03B0128-0100Z 8.10.11 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 00E316) and data register 4 (address 00CF16). The contents of the low-order 8 bits can be obtained by reading out data register 1 (address 00E216) and data register 3 (address 00CE16), respectively. These registers are reset to “0” at a falling edge of Vsep. Read out data registers 1 and 2 after the occurrence of a data slicer interrupt (refer to “8.10.12 Interrupt Request Generating Circuit”). 8.10.12 Interrupt Request Generating Circuit The interrupt requests as shown in Table 8.10.3 are generated by combination of the following bits; bits 6 and 7 of the caption position register (address 00E616). Read out the contents of data registers 1 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. Slice Line Specification Mode CPS Completion Flag 1 (bit 0 of DSC2) Completion Flag 2 (bit 5 of CPS) Caption Data Registers 1, 2 Caption Data Registers 3, 4 Line 21 A line specified by bits 4 to 0 of CPS Line 21 Line 21 A line specified by bits 4 to 0 of CPS Invalid Invalid A line specified by bits 4 to 0 of CPS 16-bit data of line 21 16-bit data of a line specified by bits 4 to 0 of CPS 16-bit data of line 21 16-bit data of line 21 16-bit data of a line specified by bits 4 to 0 of CPS Invalid Invalid 16-bit data of a line specified by bits 4 to 0 of CPS Contents of Caption Data Latch Completion Flag Contents of 16-bit Shift Register bit 7 0 0 1 1 bit 6 0 1 0 1 CPS: Caption position register DSC2: Data slicer control register 2 Table 8.10.2 Contents of Caption Data Latch Completion Flag and 16-bit Shift Register Caption position register Occurence Souces of Interrupt Request at End of Data Slice Line After slicing line 21 After a line specified by bits 4 to 0 of CPS After slicing line 21 After slicing line 21 b7 0 1 b6 0 1 0 1 Table 8.10.3 Occurence Sources of Interrupt Request |
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