HT45B0K Holtek Semiconductor, HT45B0K Datasheet - Page 17

• Manufacturer Part Number: HT45B0K
• Description: SPI to USB Bridge
• Manufacturer: Holtek Semiconductor

HT45B0K
SPI to USB Bridge
“x” means unknown.
Rev 1.00
FIFO0~FIFO5 Registers
FIFO0
FIFO1
FIFO2
FIFO3
FIFO4
FIFO5
Label
The FIFO0~FIFO5 Registers are used for data transactions between the USB device and the USB
host. The MCU reads data from or writes data to the FIFOs via the SPI interface to complete
data interchange. For “Interrupt transfer” it is supported by FIFO0~FIFO2 and FIFO4, while it is
supported by FIFO3 and FIFO5 for “Bulk transfer”.
FIFO0~FIFO5 Registers
Type
R/W
R/W
R/W
R/W
R/W
R/W
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
POR
17
Data pipe for endpoint 0, depth = 8 bytes
Data pipe for endpoint 1, depth = 8 bytes
Data pipe for endpoint 2, depth = 8 bytes
Data pipe for endpoint 3, depth = 64 bytes
Data pipe for endpoint 4, depth = 8 bytes
Data pipe for endpoint 5, depth = 64 bytes
MISC Setting Flow and Status
March 22, 2010
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