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AT83SND2CMP3B Datasheet(PDF) 152 Page - ATMEL Corporation

Part # AT83SND2CMP3B
Description  Single-Chip Flash Microcontroller with MP3 Decoder with Full Audio Interface
PDF  241 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT83SND2CMP3B Datasheet(HTML) 152 Page - ATMEL Corporation

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152
4341F–MP3–03/06
AT8xC51SND2C/MP3B
Table 18-11.
MMSTA Register
MMSTA (S:DEh Read Only) – MMC Control and Status Register
Reset Value = 0000 0000b
76
543
210
-
-
CBUSY
CRC16S
DATFS
CRC7S
RESPFS
CFLCK
Bit Number
Bit
Mnemonic
Description
7 - 6
-
Reserved
The value read from these bits is always 0. Do not set these bits.
5CBUSY
Card Busy Flag
Set by hardware when the card sends a busy state on the data line.
Cleared by hardware when the card no more sends a busy state on the data line.
4
CRC16S
CRC16 Status Bit
Transmission mode
Set by hardware when the token response reports a good CRC.
Cleared by hardware when the token response reports a bad CRC.
Reception mode
Set by hardware when the CRC16 received in the data block is correct.
Cleared by hardware when the CRC16 received in the data block is not correct.
3DATFS
Data Format Status Bit
Transmission mode
Set by hardware when the format of the token response is correct.
Cleared by hardware when the format of the token response is not correct.
Reception mode
Set by hardware when the format of the frame is correct.
Cleared by hardware when the format of the frame is not correct.
2
CRC7S
CRC7 Status Bit
Set by hardware when the CRC7 computed in the response is correct.
Cleared by hardware when the CRC7 computed in the response is not correct.
This bit is not relevant when CRCDIS is set.
1
RESPFS
Response Format Status Bit
Set by hardware when the format of a response is correct.
Cleared by hardware when the format of a response is not correct.
0CFLCK
Command FIFO Lock Bit
Set by hardware to signal user not to write in the transmit command FIFO: busy state.
Cleared by hardware to signal user the transmit command FIFO is available: idle state.



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