Table of Contents
Advertisement
1.2. U5005, 4 GB DDR3 SDRAM C-Die
Description
The 4 GB Double-Data-Rate-3 (DDR3) DRAMs is a high-speed CMOS SDRAM containing 4,294,967,296 bits.
It is internally configured as an octal-bank DRAM.
The 4 GB chip is organized as 64Mbit x 8 I/O x 8 banks and 32Mbit x16 I/O x 8 banks. These synchronous
devices achieve high speed double-data-rate transfer rates of up to 2133 Mb/sec/pin for general applications.
The chip is designed to comply with all key DDR3 DRAM key features and all of the control and address
inputs are synchronized with a pair of externally supplied differential clocks. Inputs are latched at the cross
point of differential clocks (CK rising and falling). All I/Os are synchronized with a single ended DQS or
differential DQS pair in a source synchronous fashion.
1.3 U5006, 2Gb DDR3 SDRAM F-Die
The 2Gb Double-Data-Rate-3 (DDR3(L)) B-die DRAM is double data rate architecture to achieve high-speed
operation. It is internally configured as an eight bank DRAMs.
The 2 GB chip is organized as 32Mbit x 8 I/Os x 8 banks or 16Mbit x 16 I/Os x 8 bank devices. These
synchronous devicesachieve high speed double-data-rate transfer rates of up to 1866 Mb/sec/pin for general
applications. The chip is designed to comply with all key DDR3(L) DRAM key features and all of the control
and address inputs are synchronized with a pair of externally supplied differential clocks. Inputs are latched at
the cross point of differential clocks (CK rising and CK falling). All I/Os are synchronized with a single ended
DQS or differential DQS pair in a source synchronous fashion.
1.4. U6501 (YDA176-QZE2)
YDA176 is a high-performance digital audio amplifier IC that delivers up to 15W×2ch,
which has a digital audio interface, and is capable of operating at a supply voltage ranging from
5V*1) to 18V. YDA176, with Yamaha original "Pure Pulse Direct Speaker Drive Circuit,＂ allows
a speaker to be directly connected to the output. In addition, this amplifier is insusceptible to supply
voltage fluctuation because of a feedback-type digital amplifier, and have the feature with high
power supply noise tolerance.As a result, power supply can be simplified and allowing a simple
amplifier system with less external components to be configured. YDA176 has the following
functions: gain setting function, power limit function, pop noise reduction function, over current
protection function for speaker output pins, internal over temperature protection function, under
voltage lockout, and DC detection function.
39
Advertisement
Table of Contents
