at85c51snd3 ATMEL Corporation, at85c51snd3 Datasheet - Page 193
at85c51snd3
Manufacturer Part Number
at85c51snd3
Description
At85c51snd3 Single-chip Digital Audio Decoder - Encoder With Usb 2.0 Interface
Manufacturer
ATMEL Corporation
Datasheet
1.AT85C51SND3.pdf
(271 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
- Current page: 193 of 271
- Download datasheet (3Mb)
Command Transmitter
7632D–MP3–01/07
tion from the card through the SDCMD line. These channels are detailed in the following
sections.
Figure 87. Command Line Controller Block Diagram
For sending a command to the card, the command index (1 Byte) and argument (4
Bytes) must be loaded in the command transmit FIFO using the MMCMD register.
Before starting transmission by setting the TXCEN bit in MMCON1 register, software
must first configure:
•
•
•
Figure 88 summarizes the command transmission flow.
The TXCEN flag is set until the end of transmission. The end of the command transmis-
sion is signalled by the EOCI flag in MMINT register becoming set. This flag may
generate an interrupt request as detailed in Section “Interrupt”. The end of the command
transmission also clears the TXCEN flag.
Command loading may be aborted by setting and clearing the CTPTR bit in MMCON0
register which resets the write pointer to the transmit FIFO.
Command Transmitter
Command Receiver
TX Pointer
RX Pointer
MMCON0.4
MMCON0.5
CRPTR
CTPTR
RXCEN bit in MMCON1 register to indicate whether a response is expected or not.
RFMT bit in MMCON0 register to indicate the response size expected.
CRCDIS bit in MMCON0 register to indicate whether the CRC7 included in the
response will be computed or not. In order to avoid CRC error, CRCDIS may be set
for response that do not include CRC7.
MMCMD
MMCMD
17-Byte
17-Byte
Read
Write
FIFO
FIFO
MMCON1.0
TXCEN
Data Converter
Data Converter
MMCON1.1
RXCEN
// -> Serial
Serial -> //
Finished State Machine
Finished State Machine
RX COMMAND Line
TX COMMAND Line
MMCON0.1
RFMT
MMSTA.2
CRC7S
CRC7 and Format
Generator
MMCON0.0
CRCDIS
CRC7
Checker
RESPFS
MMSTA.1
MMINT.5
MMINT.6
EOCI
EORI
SDCMD
193
Related parts for at85c51snd3
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
INTERVAL AND WIPE/WASH WIPER CONTROL IC WITH DELAY
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Low-Voltage Voice-Switched IC for Hands-Free Operation
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
AM-FM Receiver IC U4255BM-M
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Monolithic Integrated Feature Phone Circuit
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Multistandard Video-IF and Quasi Parallel Sound Processing
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
High-performance EE PLD
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
8-bit Flash Microcontroller
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
2-Wire Serial EEPROM
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
U6046BREAR WINDOW HEATING TIMER / LONG-TERM TIMER
Manufacturer:
ATMEL Corporation
Datasheet: