ML2215资料

ML2215

Speech Synthesiser with 3.0MBit ROM & Melody CircuitGENERAL DESCRIPTION

Version 1.00, October 1998

Preliminary

The ML2215 combines a Mask-ROM speech synthesiser with a melody circuit and comeswith a simple serial interface to an microcontroller. It has an analog outputs for an amplifier(speech playback) and a built-in driver for a piezo-electric speaker (melody playback). ML2215is primarily designed for application in portable cellular phones.ML2215 will come in a very small, 10.0 x 5.0mm sized 20-pin SSOP package (0.95mm pitch) housing 3MBit maskROM for speech and melody data. Selectable algorithms include 4-Bit OkiADPCM and linear and non-linear 8-BitOkiPCM (the latter achieves quality equivalent to 10-Bit linear PCM). In ADPCM mode and 4kHz sampling pro-vided (from 4 to 16kHz selectable), the device outputs 90 seconds speech plus melodies. For both, 247 channels canbe defined. ML2215 comes in an ultra-small package, operates over a wide supply range from +2.2 ~ 5.5V andsatisfies the industrial temperature range.

FEATURES

• • Internal 3.0MBit ROM• • 4-Bit OkiADPCM algorithm• • 8-Bit linear OkiPCM, 8-Bit Oki non-linear PCM• • Sampling frequencies:

4.0, 5.3, 6.4, 8.0, 10.7, 12.8, 16.0kHz• • Playback time :

180 sec @ 4KHz, 120 sec @6.4kHz• • 12-bit D to A converter built-in• • Single tone output Melody circuit

- musical scale: 31, note & rest: 63, tempo: 30- built-in piezo speaker driver

• Low-pass filter built-in• • Speech and melody phrases: 247• • Master clock: 4.096, 8.192, or 16.384MHz (by means of mask option)• • Power supply voltage: +2.2 ~ 5.5V• • Operating temperature -40 to +85°C• • 20-pin SSOP (SSOP20-P-250-0.95-K), 10.0(W) x 5.0(L)mm• • Product name ML2215MB• • Typical application is for cellular phones

TYPICAL APPLICATION DIAGRAM100nF100nF+3.3VNCNARPIN ASSIGNMENT

1234567891020191817161514131211NCSDSIRESETNCNCNCCSCLKVDDVDDVDDP1.1P1.2P1.3P1.4P1.5P1.6P1.7VSSP1.8RESETSISDCLKNARCSVREFBUSYGNDMDPiezoAOUTBUSYMSC1157MDNCNCVREFGNDAOUTNCHostMCUML2215Specification are subject to change without notice.

SemiconductorPACKAGE DIMENSIONS20-pin SSOPUnit in millimeters, unless otherwise specified.ML2215Page 2