Rev. 1.0, 09/02, page 268 of 568
12.3.3
Next Data Registers H, L (NDRH, NDRL)
NDRH and NDRL are 8-bit readable/writable registers that store the data for the next pulse output.
The NDR addresses differ depending on whether pulse output groups have the same output trigger
or different output triggers.
•
NDRH
If pulse output groups 2 and 3 have the same output trigger, all eight bits are mapped to the same
address and can be accessed at one time, as shown below.
Bit
Bit Name
Initial Value
R/W
Description
7
6
5
4
3
2
1
0
NDR15
NDR14
NDR13
NDR12
NDR11
NDR10
NDR9
NDR8
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 Register 8 to 15
The register contents are transferred to the
corresponding PODRH bits by the output trigger
specified with PCR.
If pulse output groups 2 and output pulse groups 3 have different output triggers, the upper 4 bits
and the lower 4 bits are mapped to different addresses, as shown below.
Bit
Bit Name
Initial Value
R/W
Description
7
6
5
4
NDR15
NDR14
NDR13
NDR12
0
0
0
0
R/W
R/W
R/W
R/W
Next Data Register 12 to 15
The register contents are transferred to the
corresponding PODRH bits by the output trigger
specified with PCR.
3 to
0
All 1
Reserved
These bits are always read as 1 and cannot be
modified.
Содержание H8S/2627
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