PXB4330 Datasheet, PDF (133/201 Pages) Infineon Technologies AG – ICs for Communications

PXB 4330
Register Descriptions
Register 37 SMSKU/SMSKD
Upstream/Downstream SCTF Mask Registers
CPU Accessibility:
Reset Value:
Offset Address:
Typical Usage:
Read/Write
0000_H
SMSKU
95_H
SMSKD
B5_H
Written by CPU to control internal table Read/Write
access
Bit
15
14
13
12
11
10
9
8
SMSK(15:8)
Bit
7
6
5
4
3
2
1
0
SMSK(7:0)
SMSKU(15:0)
SMSKD(15:0)
Upstream SCTF Mask Register
Downstream SCTF Mask Register
SMSKU and SMSKD control the Read-Modify-Write access from
the respective transfer registers to the internal tables on a per-bit
selection basis. The mask registers correspond to the respective
transfer registers (SCTFU, SCTFD):
0
The dedicated bit of the transfer register is not
overwritten by the corresponding table entry bit during
Read; but does overwrite the table entry bit during the
Modify-Write process.
This is a Write access to the internal table entry.
1
The dedicated bit of the transfer register is overwritten
by the corresponding table entry bit during Read and is
written back to the table entry bit during the Modify-Write
process.
This is a Read access to the internal table entry.
Data Sheet
6-133
09.99