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FEDL2257X-07 Datasheet, PDF (1/67 Pages) List of Unclassifed Manufacturers – 4-Channel Mixing Speech Synthesis LSI with Built-in FLASH/MASK ROM for Automotive | |||
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FEDL2257-07
Issue Date: Mar. 18, 2015
ML22Q573-NNNMB/ML22Q573-xxxMB/ML2257X-xxxMB
4-Channel Mixing Speech Synthesis LSI with Built-in FLASH/MASK ROM for Automotive
GENERAL DESCRIPTION
The ML22Q573-NNN, ML22Q573-xxx and ML2257X-xxx are 4-channel mixing speech synthesis LSIs with
built-in FLASH/MASK ROM for voice data. These LSIs incorporate into them an HQ-ADPCM decoder that
enables high sound quality, 16-bit D/A converter, low-pass filter, and 1.0 W monaural speaker amplifier for
driving speakers. Since functions necessary for voice output are all integrated into a single chip, a system can
be upgraded with audio features by only using one of these LSIs.
⢠Capacity of internal memory and the maximum voice production time (when HQ-ADPCMâ»1 method used)
Product name
ML22Q573-NNN/-xxx
ML22573-xxx
ML22572-xxx
ROM capacity
4 Mbits
2 Mbits
Maximum voice production time (sec)
fsam = 8.0 kHz fsam = 16.0 kHz fsam = 32.0 kHz
161
80
40
79
39
19
FEATURES
⢠Speech synthesis method:
Can be specified for each phrase.
HQ-ADPCM / 8-bit non-linear PCM / 8-bit PCM / 16-bit PCM
⢠Sampling frequency:
Can be specified for each phrase.
12.0/24.0/48.0 kHz, 8.0 / 16.0/32.0 kHz, 6.4/12.8/25.6 kHz
⢠Built-in low-pass filter and 16-bit D/A converter
⢠Built-in speaker driver amplifier:
1.0 W, 8⦠(at DVDD = 5 V)
⢠External analog voice input (built-in analog mixing function)
⢠CPU command interface:
Clock synchronous serial interface
⢠Maximum number of phrases:
1024 phrases, from 000h to 3FFh
⢠Edit ROM
⢠Volume control:
CVOL command: Adjustable through 32 levels (including OFF)
AVOL command: Adjustable through 50 levels (including OFF)
⢠Repeat function:
LOOP command
⢠Channeï½ mixing function:
4 channels
⢠Power supply voltage detection function: Can be controlled at six levels from 2.7 to 4.0 V (including the
OFF setting)
⢠Source oscillation frequency:
4.096 MHz
⢠Power supply voltage:
⢠Operating temperature range:
2.7 to 5.5 V
â40°C to +105°Câ»2
⢠Package:
heat sink type 30-pin plastic SSOP(P-SSOP30-56-0.65-6K-MC)
â¢Product name:
ML22Q573-NNNMB
ML22573-xxxMB/ML22572-xxxMB
(âxxxâ denotes ROM code number)
â»1
HQ-ADPCM is a high sound quality audio compression technology of "Ky's".
âKï½âï½â is a Registered trademark of National Universities corporate Kyushu
Institute of Technology
â»2 The limitation on the operation time changes by the using condition. (Refer to Page62)
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