Rev. 1.0, 09/02, page 266 of 568
12.3.1
Next Data Enable Registers H, L (NDERH, NDERL)
NDERH and NDERL are 8-bit readable/writable registers that enable or disable pulse output on a
bit-by-bit basis. The corresponding DDR also needs to be set to 1 in order to enable pulse output
by the PPG.
•
NDERH
Bit
Bit Name
Initial Value
R/W
Description
7
6
5
4
3
2
1
0
NDER15
NDER14
NDER13
NDER12
NDER11
NDER10
NDER9
NDER8
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Next Data Enable 8 to 15
When a bit is set to 1 for pulse output by NDRH,
the value in the corresponding NDRH bit is
transferred to the PODRH bit by the selected
output trigger. Values are not transferred from
NDRH to PODRH for cleared bits.
•
NDERL
Bit
Bit Name
Initial Value
R/W
Description
7
6
5
4
3
2
1
0
NDER7
NDER6
NDER5
NDER4
NDER3
NDER2
NDER1
NDER0
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Next Data Enable 0 to 7
When a bit is set to 1 for pulse output by NDRL, the
value in the corresponding NDRL bit is transferred
to the PODRL bit by the selected output trigger.
Values are not transferred from NDRL to PODRL
for cleared bits.
Содержание H8S/2627
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