參數(shù)資料
型號: AT43USB353M-AC
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: Low Cost Full-speed USB Microcontroller with Embedded Hub, ADC and PWM
中文描述: 8-BIT, MROM, 24 MHz, RISC MICROCONTROLLER, PQFP48
封裝: 7 X 7 MM, 1.40 MM HEIGHT, 0.50 MM PITCH, PLASTIC, MS-026BBC, LQFP-48
文件頁數(shù): 67/95頁
文件大?。?/td> 568K
代理商: AT43USB353M-AC
67
AT43USB353M
3307B–USB–4/04
Hub End-point 0 Byte Count Register – HBYTE_CNT0
Function End-point 0..3 Byte Count Register – FBYTE_CNT0..3
The contents of these registers stores the number of bytes to be sent or that was received by
USB Hub and Function end-points. This count includes the 16-bit CRC. To get the actual byte
count of the data, subtract the count in the register by 2. The hub EP0 and function EP3 have
8 byte FIFOs while function EP1 and EP2 have 64 byte FIFOs. Hub End-point 1 has no byte
count register.
Bit 7..6 – Reserved
These bits are reserved in the AT43USB353M and will read as zero.
Bit 5..0 – BYTCT5..0: Byte Count – Length of End-point DATA Packet
Bit
7
6
5
4
3
2
1
0
Hub EP0 $1FCF
BYTCT5
BYTCT4
BYTCT3
BYTCT2
BYTCT1
BYTCT0
HBYTE_CNT0
Function EP0 $1FCD
BYTCT5
BYTCT4
BYTCT3
BYTCT2
BYTCT1
BYTCT0
FBYTE_CNT0
Function EP1 $1FCC
BYTCT6
BYTCT5
BYTCT4
BYTCT3
BYTCT2
BYTCT1
BYTCT0
FBYTE_CNT1
Function EP2 $1FCB
BYTCT6
BYTCT5
BYTCT4
BYTCT3
BYTCT2
BYTCT1
BYTCT0
FBYTE_CNT2
Function EP3 $1FCA
BYTCT5
BYTCT4
BYTCT3
BYTCT2
BYTCT1
BYTCT0
FBYTE_CNT3
Read/Write
R
R
R
R/W
R/W
R/W
R/W
R/W
Initial Value
0
0
0
0
0
0
0
0
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