AT89C51SND2C-7FTUL Atmel, AT89C51SND2C-7FTUL Datasheet - Page 146
![IC 8051 MCU FLASH 64K MP3 100BGA](/photos/12/43/124396/313-100-bga_sml.jpg)
AT89C51SND2C-7FTUL
Manufacturer Part Number
AT89C51SND2C-7FTUL
Description
IC 8051 MCU FLASH 64K MP3 100BGA
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT89C51SND2C-7FTUL.pdf
(242 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT89C51SND2C-7FTUL
Manufacturer:
ATMEL
Quantity:
4 371
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Figure 18-17. Data Block Transmission Flows
18.6.4
18.6.4.1
18.6.4.2
146
AT8xC51SND2C/MP3B
Data Receiver
Configuration
Data Reception
write 16 data to MMDAT
write 8 data to MMDAT
a. Polling mode
Start Transmission
F1EI or F2EI = 1?
Transmission
No More Data
FIFO Empty?
FIFOs Filling
Data Block
FIFO Filling
DATEN = 1
DATEN = 0
To Send?
To receive data from the card you must first configure the data controller in reception mode by
clearing the DATDIR bit in MMCON1 register.
Figure 18-18 summarizes the data stream reception flows in both polling and interrupt modes
while Figure 18-19 summarizes the data block reception flows in both polling and interrupt
modes, these flows assume that block length is greater than 16 Bytes.
The end of a data frame (block or stream) reception is signalled to you by the EOFI flag in
MMINT register. This flag may generate an MMC interrupt request as detailed in Section "Inter-
rupt", page 148. When this flag is set, 2 other flags in MMSTA register: DATFS and CRC16S
give a status on the frame received. DATFS indicates if the frame format is correct or not: a valid
End bit has been received, and CRC16S indicates if the CRC16 computation is correct or not. In
case of data stream CRC16S has no meaning and stays cleared.
According to the MMC specification data transmission from the card starts after the access time
delay (formally N
locking of the MMC controller when card does not send its data (e.g. physically removed from
the bus), you must launch a time-out period to exit from such situation. In case of time-out you
AC
parameter) beginning from the End bit of the read command. To avoid any
write 16 data to MMDAT
Unmask FIFOs Empty
Start Transmission
Initialization
FIFOs Filling
Data Block
DATEN = 1
DATEN = 0
F1EM = 0
F2EM = 0
b. Interrupt mode
write 8 data to MMDAT
Transmission ISR
Mask FIFOs Empty
F1EI or F2EI = 1?
No More Data
FIFO Empty?
Data Block
FIFO Filling
To Send?
F1EM = 1
F2EM = 1
4341H–MP3–10/07
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