TMC8462 Datasheet • Document Revision V1.4 • 2018-May -09
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Bit
2
Description
ECAT
r/-
PDI
r/-
Reset Value
Reserved
3
Mailbox mode: mailbox status:
0: Mailbox empty
r/-
r/-
1: Mailbox full
Buffered mode: reserved
5:4
Buffered mode: buffer status (last written r/-
r/-
buffer):
00: 1. buffer
01: 2. buffer
10: 3. buffer
11: (no buffer written)
Mailbox mode: reserved
6
7
Read buffer in use (opened)
Write buffer in use (opened)
r/-
r/-
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
r/w
r/
(w
ack)*
1: Enable: SyncManager is active and controls
Memory area set in configuration
1
Repeat Request:
r/w
r/-
A toggle of Repeat Request means that a mail-
box retry is needed (primarily used in conjunc-
tion with ECAT Read Mailbox)
5:2
6
Reserved, write 0
r/-
r/
(w
ack)*
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 r/w
if PDI issues a buffer exchange or if PDI ac-
cesses buffer start address
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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