Nxp Semiconductors UM10237 ユーザーズマニュアル
UM10237_2
© NXP B.V. 2008. All rights reserved.
User manual
Rev. 02 — 19 December 2008
363 of 792
NXP Semiconductors
UM10237
Chapter 13: LPC24XX USB device controller
11.1 Set Address (Command: 0xD0, Data: write 1 byte)
The Set Address command is used to set the USB assigned address and enable the
(embedded) function. The address set in the device will take effect after the status stage
of the control transaction. After a bus reset, DEV_ADDR is set to 0x00, and DEV_EN is
set to 1. The device will respond to packets for function address 0x00, endpoint 0 (default
endpoint).
(embedded) function. The address set in the device will take effect after the status stage
of the control transaction. After a bus reset, DEV_ADDR is set to 0x00, and DEV_EN is
set to 1. The device will respond to packets for function address 0x00, endpoint 0 (default
endpoint).
11.2 Configure Device (Command: 0xD8, Data: write 1 byte)
A value of 1 written to the register indicates that the device is configured and all the
enabled non-control endpoints will respond. Control endpoints are always enabled and
respond even if the device is not configured, in the default state.
enabled non-control endpoints will respond. Control endpoints are always enabled and
respond even if the device is not configured, in the default state.
Table 347. SIE command code table
Command name
Recipient
Code (Hex)
Data phase
Device commands
Set Address
Device
D0
Write 1 byte
Configure Device
Device
D8
Write 1 byte
Set Mode
Device
F3
Write 1 byte
Read Current Frame Number
Device
F5
Read 1 or 2 bytes
Read Test Register
Device
FD
Read 2 bytes
Set Device Status
Device
FE
Write 1 byte
Get Device Status
Device
FE
Read 1 byte
Get Error Code
Device
FF
Read 1 byte
Read Error Status
Device
FB
Read 1 byte
Endpoint Commands
Select Endpoint
Endpoint 0
00
Read 1 byte (optional)
Endpoint 1
01
Read 1 byte (optional)
Endpoint xx
xx
Read 1 byte (optional)
Select Endpoint/Clear Interrupt
Endpoint 0
40
Read 1 byte
Endpoint 1
41
Read 1 byte
Endpoint xx
xx
+ 40
Read 1 byte
Set Endpoint Status
Endpoint 0
40
Write 1 byte
Endpoint 1
41
Write 1 byte
Endpoint xx
xx
+ 40
Write 1 byte
Clear Buffer
Selected Endpoint
F2
Read 1 byte (optional)
Validate Buffer
Selected Endpoint
FA
None
Table 348. Device Set Address Register bit description
Bit
Symbol
Description
Reset value
6:0
DEV_ADDR
Device address set by the software. After a bus reset this field is set to
0x00.
0x00.
0x00
7
DEV_EN
Device Enable. After a bus reset this bit is set to 1.
0: Device will not respond to any packets.
1: Device will respond to packets for function address DEV_ADDR.
0