AT89C51SND2C-7FTUL Atmel, AT89C51SND2C-7FTUL Datasheet - Page 83

• Manufacturer Part Number: AT89C51SND2C-7FTUL
• Description: IC 8051 MCU FLASH 64K MP3 100BGA
• Manufacturer: Atmel
• Series: 89Cr

Specifications of AT89C51SND2C-7FTUL

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, IDE/ATAPI, MMC, SPI, UART/USART, USB
• Peripherals: Audio, I²S, MP3, PCM, POR, WDT
• Number Of I /o: 32
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 2.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.3 V
• Data Converters: A/D 2x10b; D/A 2x20b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-TFBGA
• Data Bus Width: 8 bit
• Data Ram Size: 2.25 KB
• Interface Type: ATAPI, I2S, IDE, SPI, UART, USB
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 2
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details
• Other names: AT89C51SND2C7FTUL

15.1.2
15.1.2.1
Figure 15-3. 20 bit I2S justified mode
Figure 15-4. 20 bit MSB justified mode
Figure 15-5. 20 bit LSB justified mode
4341H–MP3–10/07
Digital Signals Timing
DOUT
SCLK
DSEL
Data Interface
DOUT
DOUT
SCLK
DSEL
SCLK
DSEL
R0
R0
R1
L(N-1)
To avoid noises at the output, the reset state is maintained until proper synchronism is achieved
in the DAC serial interface:
•
•
•
•
The data interface allows three different data transfer modes:
The selection between modes is done using the DINTSEL 1:0 in DAC_MISC register (Table 15-
22.) according with the following table:
The data interface always works in slave mode. This means that the DSEL and the DCLK sig-
nals are provided by microcontroller audio data interface.
R0
DSEL
SCLK
DCLK
DOUT
L(N-2)
L(N-1)
L(N-1)
L(N-3)
L(N-2)
L(N-2)
DINTSEL 1:0
L(N-3)
...
00
01
1x
...
L2
...
L1
L1
L2
L0
L0
L1
R(N-1)
L0
R(N-1)
R(N-2)
AT8xC51SND2C/MP3B
R(N-2)
R(N-3)
R(N-1)
R(N-3)
R(N-2)
...
MSB Justified
LSB Justified
I2S Justified
Format
R2
...
...
R2
R1
R1
R1
R0
R0
L(N-1)
R0
L(N-1)
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