SH7721 datasheet(825/1524 Pages) RENESAS

825 / 1524 page

Section 23

USB Pin Multiplex Controller

Rev. 3.00 Jan. 18, 2008 Page 763 of 1458

REJ09B0033-0300

This LSI

USB host

USB connector

USB1_pwr_en

USB1_ovr_current

GND

D+

D-

PDIUSBP11A etc.

SPEED

USB

power control

LSI

−

15k

Ω

15k

Ω

VPO

VMO/FSEO

RCV

SUSPEND

USB1d_SPEED

USB1d_TXENL

USB1d_TXDPLS

USB1d_TXSEO

USB1d_RCV

USB1d_DPLS

USB1d_DMNS

USB1d_SUSPEND

Figure 23.5

Example 2 of Transceiver Connection for USB Host Controller

(On-Chip Transceiver is not Used)

23.5

Usage Notes

23.5.1

About the USB Transceiver

USB transceiver is included in this LSI. It is also possible to connect an external transceiver

according to the setting in EXPFC register (see figures 23.3 and 23.5). In this case, ask the

manufacturer of the transceiver about the recommended circuit that is used between the USB

transceiver and USB connectors.

23.5.2

About the Examples of External Circuit

These examples of transceiver connection in this chapter are for reference only, therefore proper

operation is not guaranteed with these circuit examples. If system countermeasures are required

for external surges and ESD noise, use a protective diode, etc.

SH7721 Datasheet(PDF) 825 Page - Renesas Technology Corp

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