AT89C51SND2C-7FTUL Atmel, AT89C51SND2C-7FTUL Datasheet - Page 105

• 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

16.3.2
Figure 16-4. SIE Block Diagram
16.3.3
4341H–MP3–10/07
D+
Serial Interface Engine (SIE)
Function Interface Unit (UFI)
D-
The SIE performs the following functions:
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The Function Interface Unit provides the interface between the AT8xC51SND2C and the SIE. It
manages transactions at the packet level with minimal intervention from the device firmware,
which reads and writes the endpoint FIFOs.
Figure 16-6 shows typical USB IN and OUT transactions reporting the split in the hardware (UFI)
and software (C51) load.
CLOCK
USB
NRZI data encoding and decoding.
Bit stuffing and unstuffing.
CRC generation and checking.
ACKs and NACKs automatic generation.
TOKEN type identifying.
Address checking.
Clock recovery (using DPLL).
Start of Packet
End of Packet
Detector
Detector
48 MHz
Recover
Clock
Packet Bit Counter
Parallel to Serial Converter
Bit Unstuffing
USB Pattern Generator
NRZI ‘ NRZ
CRC16 Generator
NRZI Converter
Bit Stuffing
SysClk
(12 MHz)
Address Decoder
Serial to Parallel
SYNC Detector
Generator/Check
CRC5 & CRC16
PID Decoder
8
Converter
AT8xC51SND2C/MP3B
Data In
8
Data Out
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