ISP1761BE STEricsson, ISP1761BE Datasheet - Page 16

• Manufacturer Part Number: ISP1761BE
• Manufacturer: STEricsson

Specifications of ISP1761BE

• Operating Temperature (min): -40C
• Operating Temperature Classification: Industrial
• Operating Temperature (max): 85C
• Package Type: LQFP
• Rad Hardened: No
• Lead Free Status / Rohs Status: Supplier Unconfirmed

NXP Semiconductors
ISP1761_5
Product data sheet
7.1.1 Internal clock scheme and port selection
Figure 5
Fig 4.
Fig 5.
shows the internal clock scheme of the ISP1761. The ISP1761 has three ports.
Internal hub
ISP1761 clock scheme
XOSC
Rev. 05 — 13 March 2008
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. 2008. All rights reserved.
ISP1761
004aaa538
15 of 163