Datasheet

TMC8462 Datasheet • Document Revision V1.5 • 2019-June-21
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Bit Description ECAT PDI Reset Value
2 Reserved r/- r/-
3 Mailbox mode: mailbox status:
0: Mailbox empty
1: Mailbox full
Buffered mode: reserved
r/- r/-
5:4 Buffered mode: buffer status (last written
buffer):
00: 1. buffer
01: 2. buffer
10: 3. buffer
11: (no buffer written)
Mailbox mode: reserved
r/- r/-
6 Read buffer in use (opened) r/- r/-
7 Write buffer in use (opened) r/- r/-
Table 85: Register 0x0805+y*8 (SM Status)
6.4.14.5 Activate (+0x6)
Bit Description ECAT PDI Reset Value
0 SyncManager Enable/Disable:
0: Disable: Access to Memory without Sync-
Manager control
1: Enable: SyncManager is active and controls
Memory area set in configuration
r/w r/
(w
ack)*
1 Repeat Request:
A toggle of Repeat Request means that a mail-
box retry is needed (primarily used in conjunc-
tion with ECAT Read Mailbox)
r/w r/-
5:2 Reserved, write 0 r/- r/
(w
ack)*
6 Latch Event ECAT:
0: No
1: Generate Latch event if EtherCAT master
issues a buffer exchange
r/w r/
(w
ack)*
7 Latch Event PDI: 0: No 1: Generate Latch events
if PDI issues a buffer exchange or if PDI ac-
cesses buffer start address
r/w r/
(w
ack)*
Table 86: Register 0x0806+y*8 (SM Activate)
* PDI register function acknowledge by Write command is disabled: Reading this register from PDI in all
SMs which have changed activation clears AL Event Request 0x0220.4 . Writing to this register from PDI is
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