ml2215 Oki Semiconductor, ml2215 Datasheet - Page 11

• Manufacturer Part Number: ml2215
• Description: Speech Synthesizer Plus Music Lsi With On-chip 3 Mbit Mask Rom
• Manufacturer: Oki Semiconductor

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.
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.
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.
1 Semiconductor
Table 2.1 User’s Data Area and Use-Prohibited Area in on-chip Mask ROM
Note: * No test codes could be used to represent a user-defined phrase.
SD
SI
Table 1.1 Phrase Code for User-defined Phrase
Figure 1.1 Timing for Phrase Code Input
User’s Data Area
007C8 to 5FFFC
MSB 2SB 3SB 4SB 5SB 6SB 7SB LSB
MSB to LSB
00000000
00000001
11110111
11111000
11111111
Stop Code
User-defined Phrase Codes
Test Codes*
5FFFD, 5FFFE, 5FFFF
Use-Prohibited Area
Code Description
FEDL2215-01
ML2215
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