Analog Devices ADSP-SC58 Series Hardware Reference Manual page 1271

Temporary Mailbox Disable Register
The register supports temporarily and selectively disabling CAN mailboxes. For more information
CAN_MBTD
about this feature, see the Operating Modes section.
TDR (R/W)
Temporary Disable Request
TDA (R)
Temporary Disable Acknowledge
Figure 25-31: CAN_MBTD Register Diagram
Table 25-26: CAN_MBTD Register Fields
Bit No.
(Access)
7 TDR
(R/W)
6 TDA
(R/NW)
4:0 TDPTR
(R/W)
ADSP-SC58x/ADSP-2158x SHARC+ Processor Hardware Reference
15 14 13 12 11 10 9 8
0 0 0 0 0 0 0 0
Bit Name
Temporary Disable Request.
The CAN_MBTD.TDR bit holds the pointer to mailbox, which is disabled when the
CAN_MBTD.TDR bit is set.
Temporary Disable Acknowledge.
The CAN_MBTD.TDA bit indicates when the mailbox (to which the
CAN_MBTD.TDPTR bit points) is disabled. When this bit is set for a mailbox, only
the data field of that mailbox may be updated. Accesses that mailboxs control bits and
the identifier are denied.
Temporary Disable Pointer.
The CAN_MBTD.TDPTR bits hold the pointer to mailbox, which is disabled when
the CAN_MBTD.TDR bit is set.
7 6 5 4 3 2 1 0
0 0 0 0 0 0 0 0
Description/Enumeration
0 No Request
1 Request Temporary Mailbox Disable
0 No Acknowledge
1 Acknowledge Temporary Mailbox Disable
ADSP-SC58x CAN Register Descriptions
TDPTR (R/W)
Temporary Disable Pointer
25–55