Position-Data-Retain Function Control Register; W-Phase Position Data Retain Bit (Pdrw); V-Phase Position Data Retain Bit (Pdrv); U-Phase Position Data Retain Bit (Pdru) - Renesas M16C/29 Series Hardware Manual

M16C/29 Group

12.3.1.2 Position-data-retain Function Control Register

Figure 12.3.1.2.1 shows the structure of the position-data-retain function contol register.
Position-data-retain function control register (Note)
b7 b3
Figure 12.3.1.2.1. Structure of Position-data-retain Function Control 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 = "0", the rising edge of each positive phase selected.
When this bit = "1", the falling edge of each pocitive phase selected.
Rev.1.00 Nov 01,2004
REJ09B0101-0100Z
b2 b1 b0
Symbol
PDRF
Bit Bit name
W-phase position
PDRW
data retain bit
V-phase position
PDRV
data retain bit
U-phase position
PDRU
data retain bit
Retain-trigger
PDRT
polarity select bit
Nothing is assigned. When write, set to ì0î. When read,
(b7-b4)
contents are indeterminate.
Note: This register is valid only in the three-phase mode.
page 129 of 402
12.3 Three-phase Motor Control Timer Function
Address
034E
16
Function
Input level at pin IDW is read out.
0: "L" level
1: "H" level
Input level at pin IDV is read out.
0: "L" level
1: "H" level
Input level at pin IDU is read out.
0: "L" level
1: "H" level
0: Rising edge of positive phase
1: Falling edge of positive phase
When reset
XXXX 0000
2
RW
RO
RO
RO
RW