isp1562 NXP Semiconductors, isp1562 Datasheet - Page 11

• Manufacturer Part Number: isp1562
• Description: Hi-speed Universal Serial Bus Pci Host Controller
• Manufacturer: NXP Semiconductors

NXP Semiconductors
ISP1562_2
Product data sheet
7.7 Power-On Reset (POR)
7.8 Power supply
Figure 3
start with 1. At t1, the detector passes through the trip level. Another delay will be added
before POR drops to 0 to ensure that the length of the generated detector pulse, POR, is
large enough to reset asynchronous flip-flops. If the dip is too short (t4 to t5 < 11 s), POR
will not react and will stay LOW.
Figure 4
Fig 3. Power-on reset
V
shows a possible curve of V
shows the ISP1562 power supply connection.
POR(trip)
t0
is typically 1.2 V.
t1
Rev. 02 — 1 March 2007
CC(I/O)
t2
with dips at t2 to t3 and t4 to t5. At t0, POR will
t3
t4
HS USB PCI Host Controller
t5
004aaa664
© NXP B.V. 2007. All rights reserved.
V
V
POR
ISP1562
CC(I/O)
POR(trip)
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