FEDL22594-04 Datasheet, PDF (1/73 Pages) List of Unclassifed Manufacturers – 4-Channel Mixing Speech Synthesis LSI with Built-in MASK ROM for Automotive

ML22594-xxxMB
FEDL22594-04
Issue Date: Dec. 9. 2014
4-Channel Mixing Speech Synthesis LSI with Built-in MASK ROM for Automotive
GENERAL DESCRIPTION
The ML22594-xxx is 4-channel mixing speech synthesis LSIs with built-in 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, 1.0 W monaural speaker amplifier for driving speakers , and over-current detectible function for
Speaker Pins. And the high quality and a long time sound regeneration is possible by using the voice
regeneration which the outside ROM was used for.
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-ADPCM^※1 method used)
Product name
ROM capacity
Maximum voice production time (sec)
f_sam = 8.0 kHz f_sam = 16.0 kHz f_sam = 32.0 kHz
ML22594- xxx
6 Mbits(Internal)
128 Mbits(Exteranal)
243
5240
121
2620
60
1310
FEATURES
 ROM capacity:
Internal 6Mbits, External 128Mbits (Max)
 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 DV_DD = 5 V)
(with over-current detectible function for Speaker pins)
 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
 Channeｌ 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:
4.5 to 5.5 V
–40C to +105C^※2
 Package:
heat sink type 30-pin plastic SSOP(P-SSOP30-56-0.65-Z6K)
Product name:
ML22594-xxxMB (“xxx” denotes ROM code number)
※1
HQ-ADPCM is a high sound quality audio compression technology of "Ky's".
“Ｋｙ’ｓ” is a Registered trademark of National Universities corporate Kyushu
Institute of Technology
※2 The limitation on the operation time changes by the using condition. (Refer to Page69)
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