isp1761 NXP Semiconductors, isp1761 Datasheet - Page 15

• Manufacturer Part Number: isp1761
• Description: Hi-speed Universal Serial Bus On-the-go Controller
• Manufacturer: NXP Semiconductors

NXP Semiconductors
ISP1761_4
Product data sheet
7.1.1 Internal clock scheme and port selection
Figure 5
Fig 4. Internal hub
Fig 5. ISP1761 clock scheme
shows the internal clock scheme of the ISP1761. The ISP1761 has three ports.
XOSC
Rev. 04 — 5 March 2007
PLL 12 MHz IN
PORT1
AND POLLING USING
INTERNAL HUB (TT)
ENUMERATION
ACTUAL PTDs
ROOT HUB
PORTSC1
PORT2
EHCI
PORT 2
PORT 3
PORT 1
ATX
ATX
ATX
peripheral clock:
PORT3
host clock:
48 MHz,
30 MHz,
48 MHz,
30 MHz,
60 MHz
60 MHz
Hi-Speed USB OTG controller
EXTERNAL
PORTS
004aaa513
PERIPHERAL
DIGITAL
CORE
CORE
CORE
HOST
© NXP B.V. 2007. All rights reserved.
ISP1761
004aaa538
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