ISP1507DBSUM STEricsson, ISP1507DBSUM Datasheet - Page 36

• Manufacturer Part Number: ISP1507DBSUM
• Manufacturer: STEricsson

Specifications of ISP1507DBSUM

• Lead Free Status / RoHS Status: Compliant

CD00222690
Product data sheet
The sequence of events related to a host and a peripheral, both with ISP1507, is as
follows:
1. High-speed idle: Initially, the host and the peripheral are idle. The host has its 15 kΩ
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 Ω terminations enabled (TERMSELECT is set to 0b). The peripheral has its
45 Ω terminations enabled (TERMSELECT is set to 0b).
suspend state. The peripheral link places the ISP1507 into full-speed mode
(XCVRSELECT is set to 01b), removes 45 Ω terminations, and enables the 1.5 kΩ
pull-up resistor on DP (TERMSELECT is set to 1b). The peripheral link then places
the ISP1507 into low-power mode by clearing SUSPENDM, causing the ISP1507 to
draw only suspend current. The host also changes the ISP1507 to full-speed
(XCVRSELECT is set to 01b), removes 45 Ω terminations (TERMSELECT is set to
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 ISP1507.
enables its 45 Ω terminations (TERMSELECT is set to 0b). The peripheral link sees
SE0 on LINESTATE and also sets high-speed (XCVRSELECT is set to 00b), and
enables its 45 Ω terminations (TERMSELECT is set to 0b). The host link sets
OPMODE to 00b for normal high-speed operation.
Rev. 04 — 20 May 2010
ULPI HS USB host and peripheral transceiver
ISP1507C; ISP1507D
© ST-ERICSSON 2010. All rights reserved.
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