ISP1505C NXP [NXP Semiconductors], ISP1505C Datasheet - Page 29
ISP1505C
Manufacturer Part Number
ISP1505C
Description
ULPI Hi-Speed USB host and peripheral transceiver
Manufacturer
NXP [NXP Semiconductors]
Datasheet
1.ISP1505C.pdf
(76 pages)
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NXP Semiconductors
ISP1505A_ISP1505C_3
Product data sheet
For more information, refer to UTMI+ Low Pin Interface (ULPI) Specification Rev. 1.1 .
b. Host chirp: If the host does not detect the peripheral chirp, it must continue
c. High-speed idle: The peripheral must detect a minimum of Chirp K-J-K-J-K-J. Each
than 7 ms after reset time T
up its clock within 5.6 ms, leaving 200 s for the link to start transmitting the
Chirp K, and 1.2 ms for the Chirp K to complete (worst case with 10 % slow clock).
asserting SE0 until the end of reset. If the host detects the peripheral Chirp K for
no less than 2.5 s, then no more than 100 s after the bus leaves the Chirp K
state, the host sends a TXCMD (NOPID) with an alternating sequence of Chirp Ks
and Js. Each Chirp K or Chirp J must last for no less than 40 s and no longer than
60 s.
Chirp K and Chirp J must be detected for at least 2.5 s. After seeing that
minimum sequence, the peripheral sets TERMSELECT = 0b and
OPMODE[1:0] = 00b. The peripheral is now in high-speed mode and sees !squelch
(01b on LINESTATE). When the peripheral sees squelch (10b on LINESTATE), it
knows that the host has completed chirp and waits for Hi-Speed USB traffic to
begin. After transmitting the chirp sequence, the host changes OPMODE[1:0] to
00b and begins sending USB packets.
Rev. 03 — 26 August 2008
0
. If the peripheral is in low-power mode, it must wake
ULPI HS USB host and peripheral transceiver
ISP1505A; ISP1505C
© NXP B.V. 2008. All rights reserved.
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