AT80C51SND1C-ROTIL Atmel, AT80C51SND1C-ROTIL Datasheet - Page 107

• Manufacturer Part Number: AT80C51SND1C-ROTIL
• Description: IC MCU FLASH MP3 DECODER 80-TQFP
• Manufacturer: Atmel
• Series: 80Cr

Specifications of AT80C51SND1C-ROTIL

• 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 Type: ROMless
• Ram Size: 2.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.3 V
• Data Converters: A/D 2x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TQFP, 80-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Other names: AT80C51SND1CROTIL

4109L–8051–02/08
Reset Value = 0000 0000b
Table 103. UFNUML Register
UFNUML (S:BAh, Read-only) – USB Frame Number Low Register
Reset Value = 00h
Table 104. UFNUMH Register
UFNUMH (S:BBh, Read-only) – USB Frame Number High Register
Reset Value = 00h
Number
Number
Number
FNUM7
6 - 0
7 - 0
7 - 3
2-0
Bit
Bit
Bit
7
7
7
5
4
3
-
Mnemonic Description
Mnemonic Description
Mnemonic Description
FNUM10:8
FNUM7:0
CRCERR
BYCT7:0
CRCOK
FNUM6
Bit
Bit
Bit
6
6
-
-
-
-
Reserved
The value read from this bits is always 0. Do not set this bit.
Byte Count
Byte count of a received data packet. This Byte count is equal to the number of
data Bytes received after the Data PID.
Frame Number
Lower 8 bits of the 11-bit Frame Number.
Reserved
The value read from these bits is always 0. Do not set these bits.
Frame Number CRC OK Bit
Set by hardware after a non corrupted Frame Number in Start of Frame Packet is
received.
Updated after every Start Of Frame packet reception.
Note: The Start Of Frame interrupt is generated just after the PID receipt.
Frame Number CRC Error Bit
Set by hardware after a corrupted Frame Number in Start of Frame Packet is
received.
Updated after every Start Of Frame packet reception.
Note: The Start Of Frame interrupt is generated just after the PID receipt.
Reserved
The value read from this bits is always 0. Do not set this bit.
Frame Number
Upper 3 bits of the 11-bit Frame Number. It is provided in the last received SOF
packet. FNUM does not change if a corrupted SOF is received.
CRCOK
FNUM5
5
5
CRCERR
FNUM4
4
4
FNUM3
3
3
-
FNUM10
AT8xC51SND1C
FNUM2
2
2
FNUM1
FNUM9
1
1
FNUM0
FNUM8
0
0
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