ISP1505C NXP [NXP Semiconductors], ISP1505C Datasheet - Page 36
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
The sequence of events related to a host and a peripheral, both with ISP1505, is as
follows:
1. High-speed idle: Initially, the host and the peripheral are idle. The host has its 15 k
2. Full-speed suspend: When the peripheral sees no bus activity for 3 ms, it enters the
3. Resume K: When the host wants to wake up the peripheral, it sets OPMODE to 10b
4. High-speed traffic: The host link sets high-speed (XCVRSELECT is set to 00b) and
pull-down resistors enabled (DP_PULLDOWN and DM_PULLDOWN are set to 1b)
and 45
45
suspend state. The peripheral link places the ISP1505 into full-speed mode
(XCVRSELECT is set to 01b), removes 45
pull-up resistor on DP (TERMSELECT is set to 1b). The peripheral link then places
the ISP1505 into low-power mode by clearing SUSPENDM, causing the ISP1505 to
draw only suspend current. The host also changes the ISP1505 to full-speed
(XCVRSELECT is set to 01b), removes 45
1b), and then may or may not be powered down.
and transmits a full-speed K for at least 20 ms. The peripheral link sees the resume K
(10b) on LINESTATE, and asserts STP to wake up the ISP1505.
enables its 45
SE0 on LINESTATE and also sets high-speed (XCVRSELECT is set to 00b), and
enables its 45
OPMODE to 00b for normal high-speed operation.
terminations enabled (TERMSELECT is set to 0b).
terminations enabled (TERMSELECT is set to 0b). The peripheral has its
terminations (TERMSELECT is set to 0b). The peripheral link sees
terminations (TERMSELECT is set to 0b). The host link sets
Rev. 03 — 26 August 2008
ULPI HS USB host and peripheral transceiver
ISP1505A; ISP1505C
terminations, and enables the 1.5 k
terminations (TERMSELECT is set to
© NXP B.V. 2008. All rights reserved.
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