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11 / 26 page FEDL2215-01 1Semiconductor ML2215 11/26 FUNCTIONAL DESCRIPTION 1. Specifying a user-defined phrase code for playback The LSI allows a user to define up to 247 phrases. To playback a user-defined phrase, input a phrase code (phrase address) in serial order, starting with the MSB, through the SD pin. Figure 1.1 Timing for Phrase Code Input When more than 8 SI clocks are input, the first 8-clock data is taken as valid data. Table 1.1 shows phrase codes for user-defined phrases. Table 1.1 Phrase Code for User-defined Phrase MSB to LSB Code Description 00000000 Stop Code 00000001 • • 11110111 User-defined Phrase Codes 11111000 • • 11111111 Test Codes* Note: * No test codes could be used to represent a user-defined phrase. 2. Use-Prohibited Area in on-chip Mask ROM As shown in the Table 2.1, the last 3 bytes of on-chip Mask ROM are use-prohibited. Be sure not to use the last 3 bytes when you prepare ROM data using an analyzing tool. Table 2.1 shows addresses that are prohibited to use, and Figure 2.1 shows the address map of on-chip Mask ROM. Table 2.1 User’s Data Area and Use-Prohibited Area in on-chip Mask ROM User’s Data Area Use-Prohibited Area 007C8 to 5FFFC 5FFFD, 5FFFE, 5FFFF SD SI MSB 2SB 3SB 4SB 5SB 6SB 7SB LSB |
Số phần tương tự - ML2215-XXXMA |
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Mô tả tương tự - ML2215-XXXMA |
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