AT89C51SND1C-ROTUL Atmel, AT89C51SND1C-ROTUL Datasheet - Page 116
![IC 8051 MCU FLASH 64K MP3 80TQFP](/photos/12/13/121358/313-80-tqfp_sml.jpg)
AT89C51SND1C-ROTUL
Manufacturer Part Number
AT89C51SND1C-ROTUL
Description
IC 8051 MCU FLASH 64K MP3 80TQFP
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT80C51SND1C-ROTIL.pdf
(213 pages)
Specifications of AT89C51SND1C-ROTUL
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
44
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
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
80-TQFP, 80-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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Figure 16-12. Configuration Flow
16.5
Figure 16-13. Command Line Controller Block Diagram
16.5.1
116
Command Line Controller
AT8xC51SND1C
Command Transmitter
Command Transmitter
Command Receiver
RX Pointer
TX Pointer
MMCON0.4
MMCON0.5
CRPTR
CTPTR
As shown in Figure 16-13, the command line controller is divided in 2 channels: the command
transmitter channel that handles the command transmission to the card through the MCMD line
and the command receiver channel that handles the response reception from the card through
the MCMD line. These channels are detailed in the following sections.
For sending a command to the card, user must load the command index (1 Byte) and argument
(4 Bytes) in the command transmit FIFO using the MMCMD register. Before starting transmis-
sion by setting and clearing the CMDEN bit in MMCON1 register, user must first configure:
•
•
17 - Byte FIFO
5-Byte FIFO
MMCMD
MMCMD
RESPEN bit in MMCON1 register to indicate whether a response is expected or not.
RFMT bit in MMCON0 register to indicate the response size expected.
MMSTA.0
CFLCK
Read
Write
MMCON1.0
Data Converter
CMDEN
Data Converter
RESPEN
MMCON1.1
// -> Serial
Serial -> //
Finished State Machine
Finished State Machine
RX COMMAND Line
TX COMMAND Line
Configure MMC Clock
MMC Controller
Configuration
MMCLK = XXh
MMCON0.1
MMCEN = 1
FLOWC = 0
RFMT
MMSTA.2
CRC7S
CRC7 and Format
MMCON0.0
Generator
CRCDIS
CRC7
Checker
RESPFS
MMSTA.1
MMINT.5
MMINT.6
EOCI
EORI
MCMD
4109L–8051–02/08
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