ht82m9bee Holtek Semiconductor Inc., ht82m9bee Datasheet - Page 20

• Manufacturer Part Number: ht82m9bee
• Description: Ht82m9bee -- Usb Mouse Encoder 8-bit Mcu With Eeprom
• Manufacturer: Holtek Semiconductor Inc.

Data EEPROM Timing Diagrams
Note: The write cycle time t
USB with MCU Interface
There are eight registers, including Pipe_ctrl, Address+Remote_WakeUp, STALL, SIES, MISC, Endpt_EN and
FIFO0~FIFO3 in this buffer function.
Address+Remote_WakeUp register represents current address and remote wake-up function. The initial value is
STALL, Pipe_ctrl and Endpt_EN Registers
PIPE register represents whether the endpoint corresponding is accessed by host or not. After ACT_EN signal being
sent out, MCU can check which endpoint had been accessed. This register is set only after the time when host access
the corresponding endpoint.
STALL register shows whether the endpoint corresponding works or not. As soon as the endpoint work improperly, the
bit corresponding must be set.
Pipe_ctrl register is used for configuring IN (Bit=1) or OUT (Bit=0) pipe. The default is define IN pipe. Where Bit0
(DATA0) of the Pipe_ctrl register is used to setting the data toggle of any endpoint (except endpoint 0) using data tog-
gles to the value DATA0. Once the user want the any endpoint (except endpoint 0) using data toggles to the value
DATA0, the user can output a LOW pulse to this bit. The LOW pulse period must at least 10 instruction cycle.
Endpt_EN register is used to enable or disable the corresponding endpoint (except endpoint 0). Enable Endpoint
(Bit=1) or disable Endpoint (Bit=0).
Rev. 1.30
00000000 from MSB to LSB.
Mem. Addr.
01000010B
Register
Register
Address
Name
condition of sequential command.
Pipe_ctrl
R/W
R/W
41H
Bit 7
Remote
WR
Addr.+
42H
is the time from a valid stop condition of a write sequence to the end of the valid start
Bit 6
STALL
Address+Remote_WakeUp Register
43H
Default value=00000000
Register Memory Mapping
Bit 5
Address value
SIES
45H
Bit 4
20
MISC Endpt_EN FIFO0
46H
Bit 3
47H
Bit 2
48H
Bit 1
Remote Wake-up Function
0: Not this function
1: The function exists
FIFO1
49H
HT82M9BEE
December 11, 2007
FIFO2
Bit 0
4AH
FIFO3
4BH