HT82K95EE/HT82K95AE

Rev. 1.20

22

August 28, 2006

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

has to change the device address automatically.

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Func.

NMI

EOT

CRC_ERR

NAK

IN

OUT

F0_ERR

Adr_set

R/W

R/W

R

R/W

R

R

R/W

R/W

R/W

Reg_ Adr

01000101B

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 (42H).

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 (42H) after the PC Host has successfully

read the data from the device by the IN operation. The SIE will clear the bit after updat-

ing 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+Re-

mote_WakeUp Register (42H)

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

Out

R/W

This bit is used to indicate that an OUT token (except for the OUT zero length) has

been received. The F/W clear the bit after the OUT data has been read. This bit will

also be cleared by the SIE after the next valid SETUP token is received.

Default 0

IN

R

This bit is used to indicate that the current signal the USB is receiving from the PC

Host is IN token.

NAK

R

This bit is used to indicate that the SIE is transmitting NAK signal to the Host in re-

sponse to the PC Host IN or OUT token.

CRC_ERR

R/W

This bit is used to indicate there are CRCerror (bit=1). Firmware must do something to

save the device and keep it in good condition.

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

EOT

R

End of transaction flag, normal status is 1. If suspend=

¢1¢ line & EOT=¢0¢ indicates that

something is wrong in the USB Interface. Firmware in-charge must do something to

save the device and keep it in good condition.

NMI

R/W

This bit is used to control whether the USB interrupt is output to the MCU in NAK re-

sponse to the PC Host IN or OUT token.

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