参数资料
型号: AT85C51SND3B1-RTTUL
厂商: Atmel
文件页数: 2/119页
文件大小: 0K
描述: IC DECODER/ENCODER DGTL 100-LQFP
标准包装: 90
类型: 音频编码器/解码器
应用: 移动电话,手机,视频显示器
电压 - 电源,数字: 1.65 V ~ 3.6 V
安装类型: 表面贴装
封装/外壳: 100-LQFP
供应商设备封装: 100-LQFP(14x14)
包装: 托盘
10
AT85C51SND3B
7632D–MP3–01/07
Clock Controller
Table 4. Clock Signal Description
Memory Controllers
Table 5. Secure Digital Card / MutiMediaCard Controller Signal Description
Table 6. Nand Flash / SmartMedia Card Controller Signal Description
Signal
Name
Type
Description
Alternate
Function
X1
I
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.
-
X2
O
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.
-
UPVDD
PWR
USB PLL Supply voltage
Connect this pin to LVDD pin.
-
UPVSS
GND
USB PLL Circuit Ground
Connect this pin to LVSS pin.
-
APVDD
PWR
Audio PLL / Oscillator Supply voltage
Connect this pin to LVDD pin.
-
APVSS
GND
Audio PLL / Oscillator Circuit Ground
Connect this pin to LVSS pin.
-
Signal
Name
Type
Description
Alternate
Function
SDCLK
O
SD/MMC Clock
Data or command clock transfer.
P2.3
SDCMD
I/O
SD/MMC Command Line
Bidirectional command line used for commands and responses transfer.
P2.2
SDDAT3:0
I/O
SD/MMC Data Lines
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.
P2.7:4
SDINS
I
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.
Note:
This signal is generated by the SD/MMC card connector.
P2.0
SDLCK
I
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.
Note:
This signal is generated by the SD/MMC card connector.
P2.1
Signal
Name
Type
Description
Alternate
Function
NFD7:0
I/O
Memory Data Bus
8-bit bidirectional data bus.
-
NFALE
O
Address Latch Enable Signal
Asserted high during address write cycle.
-
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