HT82K94E/HT82K94A

Rev. 2.40

20

November 5, 2014

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.

Bit No.

Function

Read/Write

Register Address

7

MNI

R/W

01000001B

6~2

¾¾

1

F0_ERR

R/W

0

Adr_set

R/W

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 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 (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

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 NAK response

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