at85c51snd3 ATMEL Corporation, at85c51snd3 Datasheet - Page 142

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

142
AT85C51SND3B
Table 143. UPCFG1X Register
UPCFG1X (1.CDh) – USB Pipe Configuration 1 Register
Reset Value = 0000 0000b
Table 144. UPCFG2X Register
UPCFG2X (1.CFh) – USB Pipe Configuration 2 Register
Reset Value = 0000 0000b
INTFRQ7
Number
Number
6-4
3-2
7-0
Bit
Bit
7
7
1
0
7
-
INTFRQ7:0
Mnemonic Description
Mnemonic Description
PSIZE2:0
INTFRQ6
PSIZE2
PBK1:0
ALLOC
Bit
Bit
6
6
-
-
Reserved
The value read from this bit is always 0. Do not set this bit.
Pipe Size
Select the size of the Pipe:
- 000: 8
- 001: 16
- 010: 32
- 011: 64
- 100: 128
- 101: 256
- 110: 512
- 111: 1024
Pipe Bank
Select the number of bank to declare for the current Pipe.
- 00: 1 bank
- 01: 2 banks
- 10: invalid
- 11: invalid
Configure Pipe Memory
Set to configure the pipe memory with the characteristics.
Clear to update the memory allocation. Refer to the Memory Management
chapter for more details.
Reserved
The value read from these bits is always 0. Do not set these bits.
Interrupt Pipe Request Frequency
These bits are the maximum value in millisecond of the pulling period for an
Interrupt Pipe.
This value has no effect for a non-Interrupt Pipe.
INTFRQ5
PSIZE1
5
5
INTFRQ4
PSIZE0
4
4
INTFRQ3
PBK1
3
3
INTFRQ2
PBK0
2
2
INTFRQ1
ALLOC
1
1
7632D–MP3–01/07
INTFRQ0
0
0
-