Datasheet > 85C51SND3BX03

85C51SND3BX03

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
爱特美尔 - ATMEL		解码器编码器
页数	文件大小	规格书
263页	3620K
描述
Single-Chip Digital Audio Decoder - Encoder with USB 2.0 Interface

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数据手册

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85C51SND3BX03 数据手册

AT85C51SND3Bx

Clock Controller

Table 4. Clock Signal Description

Signal

Name

Alternate

Function

Type Description

Input of the on-chip inverting oscillator amplifier

To use the internal oscillator, a crystal/resonator circuit is connected to

this pin. If an external oscillator is used, its output is connected to this

pin. X1 is the clock source for internal timing.

Output of the on-chip inverting oscillator amplifier

To use the internal oscillator, a crystal/resonator circuit is connected to

this pin. If an external oscillator is used, leave X2 unconnected.

USB PLL Supply voltage

UPVDD

UPVSS

APVDD

APVSS

PWR

GND

PWR

GND

Connect this pin to LVDD pin.

USB PLL Circuit Ground

Connect this pin to LVSS pin.

Audio PLL Supply voltage

Connect this pin to LVDD pin.

Audio PLL Circuit Ground

Connect this pin to LVSS pin.

Memory Controllers

Table 5. Secure Digital Card / MutiMediaCard Controller Signal Description

Signal

Name

Alternate

Function

Type Description

SD/MMC Clock

SDCLK

P2.3

P2.2

Data or command clock transfer.

SD/MMC Command Line

SDCMD

I/O

Bidirectional command line used for commands and responses transfer.

SD/MMC Data Lines

SDDAT3:0 I/O

P2.7:4

P2.0

Bidirectional data lines. In 1-bit mode configuration SDDAT0 is the DAT

signal and SDDAT3:1 are not used and can be reused as I/O ports.

SD/MMC Card Insertion Signal

SDINS is the card presence signal. A low level on this input indicates

the card is present in its slot.

SDINS

SDLCK

Note:

This signal is generated by the SD/MMC card connector.

SD Card Write Lock Signal

SDLCK is the SD Card write protected input. A low level on this pin

indicates the card is write protected.

P2.1

Note:

This signal is generated by the SD/MMC card connector.

Table 6. Nand Flash / SmartMedia Card Controller Signal Description

Signal

Name

Alternate

Function

Type Description

Memory Data Bus

NFD7:0

I/O

8-bit bidirectional data bus.

Address Latch Enable Signal

NFALE

Asserted high during address write cycle.

7632A–MP3–03/06

1...6 7 8910 11 12...263

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