ISP1761BE-S ST-Ericsson Inc, ISP1761BE-S Datasheet - Page 16

• Manufacturer Part Number: ISP1761BE-S
• Description: IC USB CONTROLLER 128LQFP
• Manufacturer: ST-Ericsson Inc

Specifications of ISP1761BE-S

• Controller Type: USB Peripheral Controller
• Interface: Serial
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 128-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Other names: ISP1761BE,551; Q2203522

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
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