H8SSLASH2218 datasheet(538/750 Pages) RENESAS

538 / 750 page

Section 14 Universal Serial Bus (USB)

Rev.6.00 Jun. 03, 2008 Page 490 of 698

REJ09B0074-0600

Table 14.2

Relationship between UTSTR0 Setting and Pin Output

Pin Output

Pin Input

Pin Output

UCTLR/

TMOWE

PTSTE

SUSPEND

USPND/

TMOW

VBUS

PTSTE

FSE0

VPO

USD+

USD-

—

Hi-Z

—

Hi-Z

Legend:

×: Don’t care

—: Cannot be controlled. Indicates state in normal operation according to the USB operation and

port settings.

14.3.28

USB Test Register 1 (UTSTR1)

UTSTR1 allows the USB control pin and on-chip transceiver input signals to be monitored. Table

14.3 shows the relationship between pin input and UTSTR1 monitoring value.

Bit

Bit Name

Initial Value

R/W

Description

VBUS

UBPM

—*

On-Chip Transceiver Input Signal Monitor

VBUS: Monitors the VBUS pin.

UBPM: Monitors the UBPM pin.

5 to 3 —

All 0

Reserved

These bits are always read as 0 and cannot be

modified.

RCV

—*

On-Chip Transceiver Input Signal Monitor

RCV: Monitors the differential input level (RCV)

signal of the on-chip transceiver.

VP:

Monitors the USD+ (VP) signal of the on-chip

transceiver.

VM:

Monitors the USD- (VM) signal of the on-chip

transceiver.

Note:

* Determined by the state of pins. VBUS,

UBPM, USD+, USD-

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