at85c51snd3 ATMEL Corporation, at85c51snd3 Datasheet - Page 147

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

7632D–MP3–01/07
Reset Value = 0000 0000b
Table 151. UPBCHX Register
UPBCHX (1.D4h) – USB Pipe Data Counter High Register
Reset Value = 0000 0000b
Table 152. UPBCLX Register
UPBCLX (1.D5h) – USB Pipe Data Counter Low Register
Reset Value = 0000 0000b
PBYCT7
Number
Number
Number
7-0
7-3
2-0
7-0
Bit
Bit
Bit
7
7
-
PBYCT10:8
Mnemonic Description
Mnemonic Description
Mnemonic Description
PBYCT7:0
PDAT7:0
PBYCT6
Bit
Bit
Bit
6
6
-
-
Pipe Data Bits
Set by the software to read/write a byte from/to the Pipe FIFO selected by
PNUM.
Reserved
The value read from these bits is always 0. Do not set these bits.
Byte count (high) Bits
Set by hardware. This field is the MSB of the byte count of the FIFO endpoint.
The LSB part is provided by the UPBCLX register.
Byte Count (low) Bits
Set by the hardware. PBYCT10:0 is:
- (for OUT Pipe) increased after each writing into the Pipe and decremented after
each byte sent,
- (for IN Pipe) increased after each byte received by the host, and decremented
after each byte read by the software.
PBYCT5
5
5
-
PBYCT4
4
4
-
PBYCT3
3
3
-
PBYCT10
PBYCT2
2
2
PBYCT9
PBYCT1
1
1
PBYCT8
PBYCT0
0
0
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