參數(shù)資料
型號： AT85C51SND3B1-RTTUL
廠商： Atmel
文件頁數(shù)： 13/119頁
文件大?。?/td> 0K
描述： IC DECODER/ENCODER DGTL 100-LQFP
標(biāo)準(zhǔn)包裝： 90
類型： 音頻編碼器/解碼器
應(yīng)用： 移動電話，手機(jī)，視頻顯示器
電壓 - 電源，數(shù)字： 1.65 V ~ 3.6 V
安裝類型： 表面貼裝
封裝/外殼： 100-LQFP
供應(yīng)商設(shè)備封裝： 100-LQFP（14x14）
包裝： 托盤
11
AT85C51SND3B
7632D–MP3–01/07
USB Controller
Table 7. USB Controller Signal Description
NFCLE
O
Command Latch Enable Signal
Asserted high during command write cycle.
-
NFRE
O
Read Enable Signal
Read signal asserted low during NF/SMC read operation.
-
NFWE
O
Write Enable Signal
Write signal asserted low during NF/SMC write operation.
-
NFCE0
O
Nand Flash 0 Chip Enable
NFCE0 is active low and is asserted by the nand flash controller each
time it makes access to the device 0.
-
NFCE1
SMLCK
O
I
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.
SmartMediaCard/xD-Picture Card Write Lock Signal
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.
P4.4
NFCE2
SMINS
O
I
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
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.
P4.5
NFCE3
SMCE
O
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.
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.
P4.6
NFWP
O
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.
-
Signal
Name
Type
Description
Alternate
Function
Signal
Name
Type
Description
Alternate
Function
DPF
I/O
USB Full Speed Positive Data Upstream Port
-
DMF
I/O
USB Full Speed Minus Data Upstream Port
-
DPH
I/O
USB High Speed Plus Data Upstream Port
-
DMH
I/O
USB High Speed Minus Data Upstream Port
-
UVCON
O
USB VBUS Control line
UVCON is used to control the external VBUS power supply ON or OFF.
Note:
This output is requested for OTG mode.
P3.6
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