Marantz AV8003 Service Manual page 118

IEC Logic Symbol
IC32 : TC74VHC157FT
(15)
EN
ST
(1)
SELECT G1
(2)
1A 1 MUX
(3)
1B 1
(5)
2A
(6)
2B
(11)
3A
(10)
3B
(14)
4A
(13)
4B
www.ti.com
IC33 : TMS320DA788
1 Second Generation Aureus™ DSP
1.1 Features
• DA708: 32-/64-Bit 250-MHz Floating-Point DSP
DA788:
• Upgrades to C67x+ CPU From DA6xx Family:
– 2X CPU Registers [64 General-Purpose]
– New Audio-Specific Instructions
– Compatible With the DA6xx C67x CPU
• Enhanced Memory System
– 256K-Byte Unified Program/Data RAM
– 768K-Byte Unified Program/Data ROM
– Single-Cycle Data Access From CPU
– Large Program Cache (32K-Byte) Supports
RAM, ROM, and External Memory
• External Memory Interface (EMIF) Supports:
– 100-MHz SDRAM (16-Bit)
– Async Flash/SRAM (8- or 16-Bit)
• Enhanced I/O System
– High-Performance Crossbar Switch
– Dedicated McASP DMA Bus
– Deterministic I/O Performance
• dMAX Dual Data Movement Accelerator:
– Memory-to-Memory Transfers
– Memory-to-Peripheral Transfers
– Packing/Unpacking Delay Data
– Circular Addressing
– Non-Sequential Addressing for Reverb
• Three Multichannel Audio Serial Ports
– Five Clock Zones and 16 Serial Data Pins
– Supports TDM, I2S, and Similar Formats
– DIT Only (McASP2)
• Two SPI Ports With 3-, 4-, and 5-Pin Options
• Two Inter-Integrated Circuit (I2C) Ports
• Real-Time Interrupt Counter/Watchdog
• Oscillator- and Software-Controlled PLL
• Commercial or Extended Temperature
• 144-Pin, 0.5-mm, PowerPAD™ Thin Quad
Flatpack (TQFP) [RFP Suffix]
• Security Features Available
TC74VCX157FT
Truth Table
(4)
1Y
(7)
2Y
(9)
3Y
(12)
4Y
2001-10-11
2Y 7
GND 8
Inputs
ST SELECT
H X
L L
L L
L H
L H
X: Don't care
Floating-Point Digital Signal Processor
• Applications
– A/V and DVD Receiver
– Multizone A/V Receiver
– HDD Jukebox
– Navigation Systems
– High-Speed Encode With Simultaneous
Multichannel Decode
• Software Support
– Dolby® Digital, Dolby® Digital EX,
Dolby® Pro Logic® IIx, Dolby® Headphone,
Dolby® Virtual Surround
– DTS® 5.1, DTS-ES™ 6.1, DTS Neo:6™,
DTS 96/24™, DTS-ES 96/24™
– MPEG-2 AAC LC Decode
– THX® Select, THX® Ultra 2
– MP3 Encode, MP3 Decode
– WMA9 Encode, WMA9 Decode,
WMA9 Pro Decode
– HDCD® Decode
– ATRAC3plus® Encode,
ATRAC3plus® Decode
– Audyssey MultEQ XT®, MultEQ®, PrevEQ®
– SRS® Circle Surround™ II (CS II)
– Waves' MaxxBass® Technology
– TI Effects Library
– TI DSD-to-PCM Decode
– TI Filter Library
– TI Performance Audio Framework (PA/F)
– TI DSP/BIOS™
– Chip Support Library and DSP Library
154
10 3B
9 3Y
A B
X X
L X
H X
X L
X H
Aureus TMS320DA708
SPRS297A – JULY 2005 – REVISED AUGUST 2005
(14)
4A
(13)
4B
Outputs
Y
L
L
H
L
H
2