YSS920B.pdf 데이터시트 (총 28 페이지) - 파일 다운로드 YSS920B 데이타시트 다운로드

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YSS920B
EVE
32-bit DSP Engine for Various sound Effects
„ Outline
YSS920B is a 32-bit digital signal processor exclusively designed for sound field processing. As a
post-processing DSP after surround sound decoding, YSS920B can process various sound fields such as
various simulation surround and virtual surround through user programs, which can provide wide
variation of sound field effects on audio equipments.
„ Features
YSS920B has following features:
Basic compatibility with the SubDSP section of YSS922/932 for DSP program
High precision processing by 32-bit floating-point operation
Capability to process various sound effects by downloading external programs to the built-in RAM
16 channels processing capability (input: 16ch, output: 16ch)
Zero data detecting function on each channel
32-bit data transmission ability between multiple YSS920Bs
Connectability to most types of ADC, DAC and DIR through control register setting
Built-in delay memory with 32 bits × 1024 words (Max. 21.3 ms at fs = 48 kHz)
Ability to execute up to 2.73 seconds delay (at fs = 48 kHz) when connected with an external DRAM or
SRAM
Support for sampling frequencies from 32 kHz to 192 kHz
DSP section specifications
Internal operating frequency: 30.72 to 50.00 MHz
Data bus width: 32 bits
MAC: 32 bits (floating-point) × 16 bits (fixed-point) + 49 bits 49 bits
Program RAM: 50 bits × 1024 words
Coefficient RAM: 16 bits × 1024 words
Ability to use up to 20 general-purpose input/output terminals
Power supply voltage: 2.5 V (for internal and PLL circuits), 3.3 V (for I/O)
Si-gate CMOS process
Lead-free 100-pin SQFP package:YSS920B-SZ
www.DataSheet4U.com
YSS920B CATALOG
CATALOG No.: LSI-4SS920B21
2006.8

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YSS920B
„ Application
Sound field processing for AV amplifiers and audio mixers such as:
1) Simulation surrounds for Hall, Theater, Church, Stadium, Disco, Jazz, and Live
2) Virtual surround
3) Bass Management
4) Filtering process for LPF, HPF, equalizer, etc.
5) Fader and Level meters
6) Generating white noise, pink noise, sine waves, etc.
„ Difference between YSS920B and YSS920
The principal differences are as follows. Please sufficiently check that no problem occurs in your
product when you replace YSS920 by YSS920B.
Item
YSS920B
YSS920
1 Internal operating frequency
30.72 to 50.00MHz
30.72 to 40.96MHz
2 Power consumption (VDD1)
45mW (typ) / 65mW (max)
30mW (typ) / 45mW(max)
3 Power consumption (VDD2/AVDD) 120mW (typ) / 145mW (max) 80mW (typ) / 115mW (max)
4 Power supply start-up order)
Defined (see p18 Power-on)
Undefined
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YSS920B
„ Block Diagram
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„ Pin Configuration
YSS920B
VSS
RAMA11
RAMA12
RAMA13
RAMA14
RAMA15
RAMA16
RAMA17
VDD1
/CS
SO
SI
SCK
/IC
SDWCK
SDBCK
SDI7
SDI6
SDI5
SDI4
SDI3
SDI2
SDI1
SDI0
VDD2
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
50 VDD2
49 RAMD9
48 RAMD8
47 RAMD7
46 RAMD6
45 RAMD5
44 RAMD4
43 RAMD3
42 RAMD2
41 RAMD1
40 RAMD0
39 VDD1
38 IOPORT19
37 IOPORT18
36 IOPORT17
35 IOPORT16
34 SDO7
33 SDO6
32 SDO5
31 SDO4
30 SDO3
29 SDO2
28 SDO1
27 SDO0
26 VSS
< 100-pin SQFP top view >
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YSS920B
„ Pin Function
No. Name I/O
Functions
1 VSS
- Digital ground pin
2 XO O Crystal oscillator connecting pin
3 XI I Crystal oscillator connecting pin (12.288 to 15.000 MHz)
4 IOPORT0 I+/O General-purpose input/output pin / SDO 0 Lch zero-flag output pin / Program branch condition
input/output pin
5 IOPORT1 I+/O General-purpose input/output pin / SDO 0 Rch zero-flag output pin / Program branch condition
input/output pin
6 IOPORT2 I+/O General-purpose input/output pin / SDO 1 Lch zero-flag output pin / Program branch condition
input/output pin
7 IOPORT3 I+/O General-purpose input/output pin / SDO 1 Rch zero-flag output pin / Program branch condition
input/output pin
8 IOPORT4 I+/O General-purpose input/output pin / SDO 2 Lch zero-flag output pin / Program branch condition
input/output pin
9 IOPORT5 I+/O General-purpose input/output pin / SDO 2 Rch zero-flag output pin / Program branch condition
input/output pin
10 IOPORT6 I+/O General-purpose input/output pin / SDO 3 Lch zero-flag output pin / Program branch condition
input/output pin
11 IOPORT7 I+/O General-purpose input/output pin / SDO 3 Rch zero-flag output pin / Program branch condition
input/output pin
12 AVSS
- Analog ground pin (for PLL)
13 CPO
A PLL filter connection pin
14 AVDD - +2.5 V analog power supply pin (for PLL)
15 VDD1
- +3.3 V digital power supply pin (for input/output pin)
16 (NC)
- (No connection)
17 IOPORT8 I+/O General-purpose input/output pin / SDO 4 Lch zero-flag output pin
18 IOPORT9 I+/O General-purpose input/output pin / SDO 4 Rch zero-flag output pin
19 IOPORT10 I+/O General-purpose input/output pin / SDO 5 Lch zero-flag output pin
20 IOPORT11 I+/O General-purpose input/output pin / SDO 5 Rch zero-flag output pin
21 IOPORT12 I+/O General-purpose input/output pin / SDO 6 Lch zero-flag output pin / Chip address setting input pin 0
22 IOPORT13 I+/O General-purpose input/output pin / SDO 6 Rch zero-flag output pin / Chip address setting input pin 1
23 IOPORT14 I+/O General-purpose input/output pin / SDO 7 Lch zero-flag output pin / Chip address setting input pin 2
24 IOPORT15 I+/O General-purpose input/output pin / SDO 7 Rch zero-flag output pin / Chip address setting input pin 3
25 VDD2
- +2.5 V digital power supply pin (for internal circuits)
26 VSS
- Digital ground pin
27 SDO0 O PCM output pin
28 SDO1 O PCM output pin
29 SDO2 O PCM output pin
30 SDO3 O PCM output pin
31 SDO4 O PCM output pin
32 SDO5 O PCM output pin
33 SDO6 O PCM output pin
34 SDO7 O PCM output pin
35 IOPORT16 I+/O General-purpose input/output pin / Overflow detection output pin
36 IOPORT17 I+/O General-purpose input/output pin / Program end detection output pin
37 IOPORT18 I+/O General-purpose input/output pin / 64fs clock output pin
38 IOPORT19 I+/O General-purpose input/output pin / fs clock output pin
39 VDD1
- +3.3 V digital power supply pin (for input/output pin)
40 RAMD0 I+/O Data input/output pin for external memory 0
41 RAMD1 I+/O Data input/output pin for external memory 1
42 RAMD2 I+/O Data input/output pin for external memory 2
43 RAMD3 I+/O Data input/output pin for external memory 3
44 RAMD4 I+/O Data input/output pin for external memory 4
45 RAMD5 I+/O Data input/output pin for external memory 5
46 RAMD6 I+/O Data input/output pin for external memory 6
47 RAMD7 I+/O Data input/output pin for external memory 7
48 RAMD8 I+/O Data input/output pin for external memory 8
49 RAMD9 I+/O Data input/output pin for external memory 9
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