ml2215 Oki Semiconductor, ml2215 Datasheet - Page 12

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

3. Mask Options
The following mask options are available to choose an interfacing type and an external clock frequency, as shown
in Table 3.1.
4. Interfacing Types
Mask option allows a user to select a interfacing type and a frequency of external clock input. Available options
are listed in Table 3.1 below.
4.1 2-pin Controlled Serial Input Interface
2-pin interfacing uses the SD and SI pins to control interfacing. Pull the ST pin down to “L”.
As shown in Figure 4.1, serial data input is enabled by entering 1 sec or longer “L” input (the Start-bit input) to
the SD pin. Serial data input to the SD pin is fetched to the internal register in synchronization with the falling
edge of the SI’s 8th clock as a phrase code for a user-defined phrase.
1 Semiconductor
BUSY
NAR
Option
SD
SI
A
B
C
D
E
F
t
SDST
Figure 4.1 Timing Chart of Serial Input
Figure 2.1 Mask ROM Address Map
00000H
007C7H
007C8H
5FFFCH
5FFFDH
5FFFFH
Interfacing Type
3-pin Interfacing
3-pin Interfacing
3-pin Interfacing
2-pin Interfacing
2-pin Interfacing
2-pin Interfacing
Table 3.1 Mask Options
Phrase Control Table Area
User’s Date Area
Test Date Area
External Clock Frequency
16.384 MHz
16.384 MHz
4.096 MHz
8.192 MHz
4.096 MHz
8.192 MHz
FEDL2215-01
ML2215
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