isp1504c NXP Semiconductors, isp1504c Datasheet - Page 42

• Manufacturer Part Number: isp1504c
• Description: Ulpi Hi-speed Universal Serial Bus On-the-go Transceiver
• Manufacturer: NXP Semiconductors

NXP Semiconductors
ISP1504A_ISP1504C_1
Product data sheet
Fig 20. Remote wake-up from low-power mode
SELECT
SELECT
SELECT
SELECT
Timing is not to scale.
MODE
MODE
XCVR
TERM
XCVR
TERM
DATA
DATA
[ 7:0 ]
[ 7:0 ]
NXT
STP
NXT
STP
DIR
DIR
OP
OP
9.11 No automatic SYNC and EOP generation (optional)
LINESTATE
LINESTATE
This setting allows the link to turn off the automatic SYNC and EOP generation, and must
be used for high-speed packets only. It is provided for backward compatibility with legacy
controllers that include SYNC and EOP bytes in the data payload when transmitting
packets. The ISP1504 will not automatically generate the SYNC and EOP patterns when
OPMODE[1:0] is set to 11b. The ISP1504 will still NRZI encode data and perform bit
stuffing. An example of a sequence is shown in
packets using the TXCMD (NOPID) type. The ISP1504 does not provide a mechanism to
control bit stuffing in individual bytes, but will automatically turn off bit stuffing for EOP
when STP is asserted with data set to FEh. If data is set to 00h when STP is asserted, the
TXCMD
REGW
TXCMD
NOPID
TXCMD
REGW
00b (HS), 01b (FS), 10b (LS)
Rev. 01 — 19 October 2006
01b (FS), 10b (LS)
TXCMD
NOPID
00h
10b
10b
00h
ISP1504A; ISP1504C
Figure
RXCMD
21. The link must always send
ULPI HS USB OTG transceiver
RXCMD
RXCMD
TXCMD
REGW
© NXP B.V. 2006. All rights reserved.
00b (HS only)
TXCMD
REGW
0b (HS only)
00b (HS only)
00b
0b (HS only)
004aaa718
00b
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