M16CSLASH29 datasheet(161/499 Pages) RENESAS

161 / 499 page

12. Timer (Three-phase Motor Control Timer Function)

page 137

12.3.1.2 Position-data-retain Function Control Register

Figure 12.36

shows the structure of the position-data-retain function contol register.

Figure 12.36 PDRF Register

12.3.1.2.1 W-phase Position Data Retain Bit (PDRW)

This bit is used to retain the input level at pin IDW.

12.3.1.2.2 V-phase Position Data Retain Bit (PDRV)

This bit is used to retain the input level at pin IDV.

12.3.1.2.3 U-phase Position Data Retain Bit (PDRU)

This bit is used to retain the input level at pin IDU.

12.3.1.2.4 Retain-trigger Polarity Select Bit (PDRT)

This bit is used to select the trigger polarity to retain the position data.

When this bit is set to 0, the rising edge of each positive phase selected.

When this bit is set to 1, the falling edge of each pocitive phase selected.

Position-Data-Retain Function Control Register (1)

Symbol

Address

After Reset

PDRF

034E16

XXXX 00002

Bit Name

Function

Bit Symbol

PDRW

PDRV

PDRU

W-phase position

data retain bit

Input level at pin IDU is read out.

0: "L" level

1: "H" level

NOTE:

1.This register is valid only in the three-phase mode.

Retain-trigger

polarity select bit

(b7-b4)

PDRT

V-phase position

data retain bit

Nothing is assigned. If necessary, set to 0. When read,

the contents are undefined

U-phase position

data retain bit

Input level at pin IDV is read out.

0: "L" level

1: "H" level

Input level at pin IDW is read out.

0: "L" level

1: "H" level

0: Rising edge of positive phase

1: Falling edge of positive phase

b3 b2b1b0

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