HT82K94E/HT82K94A

Rev. 1.50

19

October 11, 2007

STALL, PIPE, 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 endpoint0) using data

toggles to the value DATA0. Once the user want the any endpoint (except endpoint0) 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)

The bitmaps are list as follows :

Register

Name

R/W

Register

Address

Bit7~Bit4 Reserved

Bit 3

Bit 2

Bit 1

Bit 0

Default

Value

PIPE_CTRL

R/W

01000001B

¾

Pipe 3

Pipe 2

Pipe 1

Pipe 0

00001111

STALL

R/W

01000011B

¾

Pipe 3

Pipe 2

Pipe 1

Pipe 0

00001111

PIPE

R

01000100B

¾

Pipe 3

Pipe 2

Pipe 1

Pipe 0

00000000

Endpt_EN

R/W

01000001B

¾

Pipe 3

Pipe 2

Pipe 1

Pipe 0

00001111

PIPE_CTRL (41H), STALL (43H), PIPE (44H) and Endpt_EN (47H) Registers

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

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.