Next Data Registers H, L (Ndrh, Ndrl) - Hitachi H8S/2378, H8S/2378R Series Hardware Manual

12.3.3

Next Data Registers H, L (NDRH, NDRL)

NDRH, NDRL store the next data for 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
7 NDR15
6 NDR14
5 NDR13
4 NDR12
3 NDR11
2 NDR10
1 NDR9
0 NDR8
If pulse output groups 2 and 3 have different output triggers, upper 4 bits and lower 4 bits are
mapped to the different addresses as shown below.
Bit Bit Name
7 NDR15
6 NDR14
5 NDR13
4 NDR12
3 —
to
0
Rev. 1.0, 09/01, page 576 of 904
Initial Value R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
Initial Value R/W
0 R/W
0 R/W
0 R/W
0 R/W
1 —
Description
Next Data Register 15 to 8
The register contents are transferred to the
corresponding PODRH bits by the output trigger
specified with PCR.
Description
Next Data Register 15 to 12
The register contents are transferred to the
corresponding PODRH bits by the output trigger
specified with PCR.
Reserved
1 is always read and write is disabled.