AT89C51SND1C-ROTUL Atmel, AT89C51SND1C-ROTUL Datasheet - Page 112
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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16.2.3
Figure 16-6. Command Token Format
16.2.4
112
AT8xC51SND1C
Command Token Format
Response Token Format
As shown in Figure 16-6, commands have a fixed code length of 48 bits. Each command token
is preceded by a Start bit: a low level on MCMD line and succeeded by an End bit: a high level
on MCMD line. The command content is preceded by a Transmission bit: a high level on MCMD
line for a command token (host to card) and succeeded by a 7 - bit CRC so that transmission
errors can be detected and the operation may be repeated.
Command content contains the command index and address information or parameters.
Table 106. Command Token Format
There are five types of response tokens (R1 to R5). As shown in Figure 16-7, responses have a
code length of 48 bits or 136 bits. A response token is preceded by a Start bit: a low level on
MCMD line and succeeded by an End bit: a high level on MCMD line. The command content is
preceded by a Transmission bit: a low level on MCMD line for a response token (card to host)
and succeeded (R1,R2,R4,R5) or not (R3) by a 7 - bit CRC.
Response content contains mirrored command and status information (R1 response), CID regis-
ter or CSD register (R2 response), OCR register (R3 response), or RCA register (R4 and R5
response).
Figure 16-7. Response Token Format
R1, R4, R5
Bit Position
Width (Bits)
Description
Value
0
R3
R2
1
0
0
0
Start bit
Total Length = 48 bits
0
0
0
47
‘0’
1
Content
Total Length = 48 bits
Total Length = 48 bits
Transmission
Content
46
‘1’
bit
1
Content
Content = CID or CSD
Total Length = 136 bits
CRC
Command
45:40
Index
6
-
1
CRC
Argument
1
1
39:8
32
-
CRC7
7:1
7
-
CRC
4109L–8051–02/08
1
End bit
‘1’
0
1
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