USB7002-ISLASHKDX datasheet(20/56 Pages) MICROCHIP

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USB7002

DS00002670G-page 20

 2022 Microchip Technology Inc. and its subsidiaries

3.4

Physical and Logical Port Mapping

The USB70xx family of devices are based upon a common architecture, but all have different modifications and/or pin

bond outs to achieve the various device configurations. The base chip is composed of a total of 6 USB3 PHYs and 7

USB2 PHYs. These PHYs are physically arranged on the chip in a certain way, which is referred to as the PHYSICAL

port mapping.

The actual port numbering is remapped by default in different ways on each device in the family. This changes the way

that the ports are numbered from the USB host’s perspective. This is referred to as LOGICAL mapping.

The various configuration options available for these devices may, at times, be with respect to PHYSICAL mapping or

LOGICAL mapping. Each individual configuration option which has a PHYSICAL or LOGICAL dependency is declared

as such within the register description.

The PHYSICAL vs. LOGICAL mapping is described for all port related pins in Table 3-7. A system design in schematics

and layout is generally performed using the pinout in Section 3.1, Pin Assignments, which is assigned by the default

LOGICAL mapping. Hence, it may be necessary to cross reference the PHYSICAL vs. LOGICAL look up tables when

determining the hub configuration.

Note:

The MPLAB Connect tool makes configuration simple; the settings can be selected by the user with respect

to the LOGICAL port numbering. The tool handles the necessary linking to the PHYSICAL port settings.

Refer to Section 6.0, Device Configuration for additional information.

TABLE 3-7:

USB7002 PHYSICAL VS. LOGICAL PORT MAPPING

Device

Pin Name

LOGICAL PORT NUMBER

PHYSICAL PORT NUMBER

0123450123456

USB2DN_DP1

USB2DN_DM1

USB3DN_TXDP1A

USB3DN_TXDM1A

USB3DN_RXDP1A

USB3DN_RXDM1A

USB2DN_DP3

USB2DN_DM3

USB3DN_TXDP1B

USB3DN_TXDM1B

USB3DN_RXDP1B

USB3DN_RXDM1B

USB2DN_DP2

USB2DN_DM2

USB3DN_TXDP2A

USB3DN_TXDM2A

USB3DN_RXDP2A

USB3DN_RXDM2A

USB2DN_DP4

USB2DN_DM4

USB3DN_TXDP2B

USB3DN_TXDM2B

USB3DN_RXDP2B

USB3DN_RXDM2B

USB3UP_TXDPB

USB3UP_TXDMB

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