TMC8462 Datasheet • Document Revision V1.4 • 2018-May -09
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6.4.3 Write Protection
6.4.3.1 Write Register Enable (0x0020)
Bit
Description
ECAT
PDI
Reset Value
0
If write register protection is enabled, this reg- r/w
ister has to be written in the same Ethernet
frame (value does not care) before other writes
to this station are allowed. Write protection
is still active after this frame (if Write Register
Protection register is not changed).
r/-
7:1
Reserved, wirte 0
r/-
r/-
Table 19: Register 0x0020 (Write Register Enable)
6.4.3.2 Write Register Protection (0x0021)
Bit
Description
ECAT
PDI
Reset Value
0
Write register protection:
0: Protection disabled
1: Protection enabled
Registers 0x0000-0x0137
r/w
r/-
,
0x013A-0x0F0F are
write protected, except for 0x0030
7:1
Reserved, write 0
r/-
r/-
Table 20: Register 0x0021 (Write Register Prot.)
6.4.3.3 ESC Write Enable (0x0030)
Bit
Description
ECAT
PDI
Reset Value
0
If ESC write protection is enabled, this register r/w
has to be written in the same Ethernet frame
(value does not care) before other writes to this
station are allowed. ESC write protection is still
active after this frame (if ESC Write Protection
register is not changed).
r/-
7:1
Reserved, write 0
r/-
r/-
Table 21: Register 0x0030 (ESC Write Enable)
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