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SAF1562 Datasheet(PDF) 9 Page - NXP Semiconductors |
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SAF1562 Datasheet(HTML) 9 Page - NXP Semiconductors |
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9 / 97 page  SAF1562_1 © NXP B.V. 2007. All rights reserved. Product data sheet Rev. 01 — 7 February 2007 9 of 97 NXP Semiconductors SAF1562 Hi-Speed Universal Serial Bus PCI Host Controller [1] Symbol names ending with # represent active LOW signals for PCI pins, for example: NAME#. Symbol names ending with underscore N represent active LOW signals for USB pins, for example: NAME_N. [2] Connect to ground if I2C-bus is not used. 7. Functional description 7.1 OHCI Host Controller An OHCI Host Controller per port transfers data to devices at the Original USB defined bit rate of 12 Mbit/s or 1.5 Mbit/s. 7.2 EHCI Host Controller The EHCI Host Controller transfers data to a Hi-Speed USB compliant device at the Hi-Speed USB defined bit rate of 480 Mbit/s. When the EHCI Host Controller has the ownership of a port, the OHCI Host Controllers are not allowed to modify the port register. All additional port bit definitions required for the Enhanced Host Controller are not visible to the OHCI Host Controller. 7.3 Dynamic port-routing logic The port-routing feature allows sharing of the same physical downstream ports between the Original USB Host Controller and the Hi-Speed USB Host Controller. This requirement of the Enhanced Host Controller Interface Specification for Universal Serial Bus Rev. 1.0 provides ports that are multiplexed with the ports of the OHCI. DM2 90 AI/O D −; analog connection for the USB downstream port 2; leave this pin open when not in use GNDA 91 - analog ground DP2 92 AI/O D+; analog connection for the USB downstream port 2; leave this pin open when not in use VDDA_AUX 93 - auxiliary analog supply voltage; add a 100 nF decoupling capacitor GNDD 94 - digital ground GNDD 95 - digital ground SCL 96 I/O I2C-bus clock; pull-up to 3.3 V through a 10 k Ω resistor[2] I2C-bus pad; clock signal SDA 97 I/O I2C-bus data; pull-up to 3.3 V through a 10 k Ω resistor[2] I2C-bus pad; data signal VCC(I/O)_AUX 98 - 3.3 V auxiliary supply voltage; used to power pads; add a 100 nF decoupling capacitor PME# 99 O PCI Power Management Event; used by a device to request a change in the device or system power state PCI pad; 3.3 V signaling; open-drain VCC(I/O)_AUX 100 - 3.3 V auxiliary supply voltage; used to power pads; add a 100 nF decoupling capacitor Table 2. Pin description …continued Symbol[1] Pin Type Description |
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