m66291 Renesas Electronics Corporation., m66291 Datasheet - Page 97

• Manufacturer Part Number: m66291
• Description: Assp Usb2.0 Device Controller
• Manufacturer: Renesas Electronics Corporation.

M 6 6 2 9 1 G P / H P
3.5 Enumeration
R e v 1 . 0 1
Figure 3.13 shows the overview of enumeration operations.
2 0 0 4 . 1 1 . 0 1
SET _CO NFIG URAT IO N
G ET_DESCRIPT O R
G ET_DESCRIPT O R
(PC power O N etc.)
request (ADDR=0)
request (ADDR
Descriptor receive
device recognition
Descriptor receive
USBbus connect
SET_ADDRESS
procedure
Host side
USB bus reset
FullSpeed
p a g e 9 7 o f 1 2 2
request
request
Figure 3.13 Overview of Bus ⋅ Enumeration Operations
≠
0)
(DVSQ ="000")
(DVSQ ="001")
(DVSQ ="010")
(DVSQ ="011")
Powered state
Address state
Default state
Configured
state
H/W procedure
Control transfer
Control transfer
stage transition
stage transition
Vbus interrupt
interrupt
interrupt
stage transition interrupt
stage transition interrupt
(at disabled autom atic
(at disabled autom atic
transition interrupt
transition interrupt
transition interrupt
(SetConfiguration)
(USB bus reset)
Control transfer
Control transfer
(SetAddress)
Device state
Device state
Device state
response)
response)
SetAddress procedure
Configuration receive
(Set the T r_O N bits)
USB reset procedure
Initialize procedure
device notification
procedure
S/W side
Descriptor
Descriptor
FullSpeed
data set
data set