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

Signal

Name

Alternate

Function

Type Description

Command Latch Enable Signal

NFCLE

NFRE

NFWE

Asserted high during command write cycle.

Read Enable Signal

Read signal asserted low during NF/SMC read operation.

Write Enable Signal

Write signal asserted low during NF/SMC write operation.

Nand Flash 0 Chip Enable

NFCE0

NFCE1

NFCE0 is active low and is asserted by the nand flash controller each

time it makes access to the device 0.

Nand Flash 1 Chip Enable

NFCE1 is active low and is asserted by the nand flash controller each

time it makes access to the selected device.

SMLCK

SmartMediaCard/xD-Picture Card Write Lock Signal

P4.4

SMLCK is the card write protected input. A low level on this pin

indicates the card is write protected.

Note:

When used as SMLCK input, pad has internal pull-up.

NFCE2

SMINS

Nand Flash 2 Chip Enable

NFCE2 is active low and is asserted by the nand flash controller each

time it makes access to the selected device.

SmartMediaCard/xD-Picture Card Insertion Signal

P4.5

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

the card is present in its slot.

Note:

When used as SMINS input, pad has internal pull-up.

NFCE3

SMCE

Nand Flash 3 Chip Enable

NFCE3 is active low and is asserted by the nand flash controller each

time it makes access to the selected device.

P4.6

SmartMediaCard/xD-Picture Card Chip Enable

SMCE is active low and is asserted by the nand flash controller each

time it makes access to the card.

Write Protect Signal

NFWP is the Nand Flash / SmartMediaCard/xD-Picture Card write

protect signal. This signal is active low and is set to low during reset in

order to protect the memory against parasitic writes.

NFWP

USB Controller

Table 7. USB Controller Signal Description

Signal

Name

Alternate

Function

Type Description

DPF

I/O USB Full Speed Positive Data Upstream Port

I/O USB Full Speed Minus Data Upstream Port

I/O USB High Speed Plus Data Upstream Port

I/O USB High Speed Minus Data Upstream Port

USB VBUS Control line

DMF

DPH

DMH

UVCON

UVCON is used to control the external VBUS power supply ON or OFF.

Note: This output is requested for OTG mode.

P3.6

AT85C51SND3Bx

7632A–MP3–03/06

1...7 8 91011 12 13...263

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