HT82B40A datasheet(32/54 Pages) HOLTEK

32 / 54 page

HT82B40R/HT82B40A

Rev. 1.70

November 5, 2014

Func. Name

R/W

Description

EOP

R/W

This bit is used to indicate the SIE has detected a EOP USB signal in the USB Bus. This bit is

set by SIE and cleared by F/W.

J_state

R/W

This bit is used to indicate the SIE has detected a J_state USB signal in the USB Bus. This bit

is set by SIE and cleared by F/W.

K_state

R/W

This bit is used to indicate the SIE has detected a K_state USB signal in the USB Bus. This bit

is set by SIE and cleared by F/W.

¾¾

Unused bit, read as

²0²

SE0

R/W

This bit is used to indicate the SIE has detected a SE0 noise in the USB Bus. This bit is set by

SIE and cleared by F/W.

SE1

R/W

This bit is used to indicate the SIE has detected a SE1 noise in the USB Bus. This bit is set by

SIE and cleared by F/W.

USB_STAT Function Table

The SIES Register is used to indicate the present signal state in which the SIE receives and also defines whether the

SIE has to change the device address automatically.

Bit No.

Function

Read/Write

Adr_set

R/W

01000001B

F0_ERR

R/W

2~6

¾¾

NMI

R/W

SIES (45H) Register Table

Func. Name

R/W

Description

ADR_SET

R/W

This bit is used to configure the SIE to automatically change the device address with the value

of the Address+Remote_WakeUp Register.

When this bit is set to

²1² by F/W, the SIE will update the device address with the value of the

Address+Remote_WakeUp Register after the PC Host has successfully read the data from

the device by the IN operation. The SIE will clear the bit after updating the device address.

Otherwise, when this bit is cleared to

²0², the SIE will update the device address immediately

after an address is written to the Address+Remote_WakeUp Register. Default 0.

F0_ERR

R/W

This bit is used to indicate that some errors have occurred when accessing the FIFO0.

This bit is set by SIE and cleared by F/W. Default 0

¾¾

Unused bit, read as

²0²

NMI

R/W

This bit is used to control whether the USB interrupt is output to the MCU in a NAK response

to the PC Host IN or OUT token. Only for Endpoint0

1: has only USB interrupt, data is transmitted to the PC host or data is received from the PC

Host

0: always has USB interrupt if the USB accesses FIFO0

Default 0

SIES Function Table

HT82B40A 数据表(PDF) 32 Page - Holtek Semiconductor Inc

HT82B40A 数据表(HTML) 32 Page - Holtek Semiconductor Inc

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