beautypg.com

27 u_tmwa (usb tx mailbox write address register), 28 u_rmsa (usb rx mailbox start address register), 29 u_rmba (usb rx mailbox bottom address register) – NEC Network Controller uPD98502 User Manual

Page 329: 30 u_rmra (usb rx mailbox read address register), 31 u_rmwa (usb rx mailbox write address register)

background image

CHAPTER 6 USB CONTROLLER

Preliminary User’s Manual S15543EJ1V0UM

329

6.2.27 U_TMWA (USB Tx MailBox Write Address Register)

Bits

Field

R/W

Default

Description

31:0

Address

R

0

Register that indicates the address in the transmit MailBox area to which

USB Controller will write next time.

6.2.28

U_RMSA (USB Rx MailBox Start Address Register)

Bits

Field

R/W

Default

Description

31:0

Address

R/W

0

Register that indicates the start address of the receive MailBox area. The

V

R

4120A must set a value in this field only at initialization.

6.2.29 U_RMBA (USB Rx MailBox Bottom Address Register)

Bits

Field

R/W

Default

Description

31:0

Address

R/W

0

Register that indicates the end address of the receive MailBox area. The

V

R

4120A must set a value in this field only at initialization.

6.2.30 U_RMRA (USB Rx MailBox Read Address Register)

Bits

Field

R/W

Default

Description

31:0

Address

R/W

0

Register that indicates the address of the area that will be read next by the

V

R

4120A. After the V

R

4120A reads the contents of a MailBox, the value set in

this register must be changed by V

R

4120A RISC Processor.

6.2.31 U_RMWA (USB Rx MailBox Write Address Register)

Bits

Field

R/W

Default

Description

31:0

Address

R

0

Register that indicates the address in the receive MailBox area to which USB

Controller will write next time.