HD64F2145 datasheet(348/829 Pages) RENESAS

348 / 829 page

Rev. 2.0, 08/02, page 308 of 788

Bit

Bit Name

Initial Value

R/W

Description

2PREQF

R/(W)*

Pre-Equalization Flag

Detects the occurrence of an IHI signal 2fH

modification condition. The generation of a

falling/rising edge in the IHI signal during a mask

interval is expressed as the occurrence of a 2fH

modification condition. For details, see section 13.4.4,

2fH Modification of IHI Signal.

[Clearing condition]

When 0 is written in PREQF after reading PREQF = 1

[Setting condition]

When an IHI signal 2fH modification condition is

detected

IHI

Undefined*

IHI Signal Level

Indicates the current level of the IHI signal. Signal

source and phase inversion selection for the IHI signal

depends on the contents of TCONRI. Read this bit to

determine whether the input signal is positive or

negative, then maintain the IHI signal at positive phase

by modifying TCONRI.

0: The IHI signal is low

1: The IHI signal is high

IVI

Undefined*

IVI Signal Level

Indicates the current level of the IVI signal. Signal

source and phase inversion selection for the IVI signal

depends on the contents of TCONRI. Read this bit to

determine whether the input signal is positive or

negative, then maintain the IVI signal at positive phase

by modifying TCONRI.

0: The IVI signal is low

1: The IVI signal is high

Notes: 1. Only 0 can be written, to clear the flag.

2. The initial value is undefined since it depends on the pin state.

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