at85c51snd3 ATMEL Corporation, at85c51snd3 Datasheet - Page 139

• Manufacturer Part Number: at85c51snd3
• Description: At85c51snd3 Single-chip Digital Audio Decoder - Encoder With Usb 2.0 Interface
• Manufacturer: ATMEL Corporation

USB Host Pipe Registers
7632D–MP3–01/07
Table 137. UHFNUML Register
UHFNUML (1.DDh) – USB Host Frame Number Low Register
Reset Value = 0000 0000b
Table 138. UHFLEN Register
UHFLEN (1.DEh) – USB Host Frame Length Register
Reset Value = 0000 0000b
Table 139. UPNUM Register
UPNUM (1.C9h) – USB Host Pipe Number Register
Reset Value = 0000 0000b
Number
Number
Number
FNUM7
FLEN7
7-0
7-0
7-3
2-0
Bit
Bit
Bit
7
7
7
-
Mnemonic Description
Mnemonic Description
Mnemonic Description
FNUM7:0
PNUM2:0
FLEN7:0
FNUM6
FLEN6
Bit
Bit
Bit
6
6
6
-
-
Frame Number
The value contained in tis register is the current SOF number.
This value can be modified by software.
Frame Length
The value contained
Reserved
The value read from these bits is always 0. Do not set these bits.
Pipe Number
Select the pipe using this register. The USB Host registers ended by a X
correspond then to this number.
This number is used for the USB controller following the value of the PNUMD bit.
FNUM5
FLEN5
5
5
5
-
FNUM4
FLEN4
4
4
4
-
FNUM3
FLEN3
3
3
3
-
FNUM2
PNUM2
FLEN2
2
2
2
PNUM1
FNUM1
FLEN1
1
1
1
FNUM0
PNUM0
FLEN0
0
0
0
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