DSP56720 datasheet(2/54 Pages) FREESCALE

2 / 54 page

SymphonyTM DSP56720 / DSP56721 Multi-Core Audio Processors, Rev.1

Freescale Semiconductor

Table of Contents

Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

1.1

Pinout for DSP56720 144-Pin Plastic LQFP Package . .4

1.2

Pinout for DSP56721 80-Pin Plastic LQFP Package . . .6

1.3

Pinout for DSP56721 144-Pin Plastic LQFP Package . .7

1.4

Pin Multiplexing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

2.1

Chip-Level Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . .8

2.1.1

Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . .8

2.1.2

Thermal Characteristics. . . . . . . . . . . . . . . . . . .10

2.1.3

Power Requirements . . . . . . . . . . . . . . . . . . . . .10

2.1.4

DC Electrical Characteristics . . . . . . . . . . . . . . .11

2.1.5

AC Electrical Characteristics . . . . . . . . . . . . . . .12

2.1.6

Internal Clocks . . . . . . . . . . . . . . . . . . . . . . . . .12

2.1.7

External Clock Operation. . . . . . . . . . . . . . . . . .13

2.1.8

Reset, Stop, Mode Select, and Interrupt Timing 14

2.2

Module-Level Specifications . . . . . . . . . . . . . . . . . . . . .17

2.2.1

Serial Host Interface (SHI) SPI Protocol Timing 18

2.2.2

Serial Host Interface (SHI) I2C Protocol Timing.24

2.2.3

Programming the SHI I2C Serial Clock . . . . . . 26

2.2.4

Enhanced Serial Audio Interface (ESAI) Timing 27

2.2.5

Timer Timing . . . . . . . . . . . . . . . . . . . . . . . . . . 32

2.2.6

GPIO Timing . . . . . . . . . . . . . . . . . . . . . . . . . . 32

2.2.7

JTAG Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . 33

2.2.8

Watchdog Timer Timing . . . . . . . . . . . . . . . . . . 35

2.2.9

Host Data Interface (HDI24) Timing . . . . . . . . . 35

2.2.10 S/PDIF Timing . . . . . . . . . . . . . . . . . . . . . . . . . 42

2.2.11 EMC Timing (DSP56720 only) . . . . . . . . . . . . . 43

Functional Description and Application Information . . . . . . . 48

Hardware Design Considerations . . . . . . . . . . . . . . . . . . . . . 48

Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Package Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

6.1

80-Pin Package Outline Drawing . . . . . . . . . . . . . . . . . 48

6.2

144-Pin Package Outline Drawing . . . . . . . . . . . . . . . . 51

Product Documentation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

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