AT83C51SND1C_03 ATMEL [ATMEL Corporation], AT83C51SND1C_03 Datasheet - Page 107

• Manufacturer Part Number: AT83C51SND1C_03
• Description: Single-Chip Flash Microcontroller with MP3 Decoder and Human Interface
• Manufacturer: ATMEL [ATMEL Corporation]

4109E–8051–06/03
Table 101. UBYCTX Register
UBYCTX (S:E2h) – USB Endpoint X Byte Count Register (X = EPNUM set in UEPNUM)
Reset Value = 0000 0000b
Table 102. UFNUML Register
UFNUML (S:BAh, Read-only) – USB Frame Number Low Register
Reset Value = 00h
Number
Number
FNUM7
6 - 0
7 - 0
Bit
Bit
7
7
7
-
Mnemonic Description
Mnemonic Description
FNUM7:0
BYCT7:0
FNUM6
BYCT6
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.
FNUM5
BYCT5
5
5
FNUM4
BYCT4
4
4
FNUM3
BYCT3
3
3
AT8xC51SND1C
FNUM2
BYCT2
2
2
FNUM1
BYCT1
1
1
FNUM0
BYCT0
0
0
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