Renesas M16C FAMILY series Hardware Manual page 154

M 1 6 C 2 / 8 G o r u p ( M 1 6 C
12.3.1.2 Position-data-retain Function Control Register
Figure 12.36 shows the structure of the position-data-retain function contol register.
Position-data-retain Function Control Register
b7 b3
NOTES:
1.This register is valid only in the three-phase mode.
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.
R e . v 2 0 . 0 J a . n 3 , 1 2 0 0 7
R E J 0 9 B 0 0 4 7 0 - 2 0 0
2 / , 8 M 1 6 C 2 / 8 ) B
b2 b1 b0
Symbol
PDRF
Bit Symbol
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 "0". When read,
(b7-b4)
contents are indeterminate.
page 134
f o 3 8 5
(1)
Address
034E
16
Bit Name
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
After Reset
XXXX 0000
2
Function RW
RO
RO
RO
RW
12. Timer