User's Manual

Confidential
USERS MANUAL
30(31)
Document number Revision
1/198 17-5/FCP 101 3317 Uen A
1. The startup sequence begins with the completion of the power up ramping of the
VREF signal as described in Power On Sequence.
2. The D+ signal is brought high with the power up of the USB block in the
baseband circuitry. This produces the J state indicating to the USB host that a
device is attaching.
3. A host initiated SE0 begins the USB protocol transactions. A power up
summary of USB transactions is shown for example.
Transactions by Device:
#Transactns Acknowledgement Bytes
Addr Endp Type Total Error ACK NAK None Attempt Success
0 0 SETUP 4 0 4 0 0 32 32
0 0 IN 4 0 4 0 0 36 36
0 0 OUT 2 0 2 0 0 0 0
3 0 SETUP 7 0 7 0 0 56 56
3 0 IN 7 0 7 0 0 132 132
3 0 OUT 6 0 6 0 0 0 0
4 0 SETUP 3 0 3 0 0 24 24
4 0 IN 3 0 3 0 0 27 27
4 0 OUT 2 0 2 0 0 0 0
4 2 IN 7164 0 3 7161 0 63 63
4 2 OUT 2 0 2 0 0 39 39
Control Transfers by Device:
Addr Endp Packet# Dir Type Recipient Request Value Index Length
0 0 336 D->H Standard Device GET_DESCRIPTOR 256 0 64
0 0 426 H->D Standard Device SET_ADDRESS 3 0 0
0 0 874 D->H Standard Device GET_DESCRIPTOR 256 0 64
0 0 904 H->D Standard Device SET_ADDRESS 4 0 0
3 0 472 D->H Standard Device GET_DESCRIPTOR 256 0 18
3 0 481 D->H Standard Device GET_DESCRIPTOR 512 0 9
3 0 490 D->H Standard Device GET_DESCRIPTOR 512 0 255
3 0 670 D->H Standard Device GET_DESCRIPTOR 256 0 18
3 0 679 D->H Standard Device GET_DESCRIPTOR 512 0 9
3 0 688 D->H Standard Device GET_DESCRIPTOR 512 0 39
3 0 697 H->D Standard Device SET_CONFIGURATION 1 0 0
4 0 950 D->H Standard Device GET_DESCRIPTOR 256 0 18
4 0 959 D->H Standard Device GET_DESCRIPTOR 512 0 9
4 0 968 H->D Standard Device SET_CONFIGURATION 1 0 0