Freescale Semiconductor MSC8156 Evaluation Module MSC8156EVM MSC8156EVM Manual Do Utilizador
Códigos do produto
MSC8156EVM
RapidIO Programming Model
MSC8156 Reference Manual, Rev. 2
Freescale Semiconductor
16-205
16.6.68
Outbound Message x Multicast Group Registers (OMxMGR)
OMxMGR contains a multicast group (MG) value and extended multicast group number (EMG)
which, in combination with the multicast list register and the multicast enable (OMxMR[MM]
described in Table 16-103, OMxMR Field Descriptions, on page 16-195), indicates which
device IDs are targets of a multicast operation. The multicast group represents the most
significant three bits (bits[7–5]) of the RapidIO device IDs that are destinations of the message
operation. The multicast list indicates a list of targets within that group. Each individual bit, when
encoded, determines the least significant five bits of the RapidIO device IDs (bits[4–0]) that are
targets of the message operation. Therefore, multicast group 0 (MG = 0) contains target device
IDs (0, 1, ..., 31), multicast group 1 (MG = 1) contains target device IDs (32, 33, ... 63), and so
on.
which, in combination with the multicast list register and the multicast enable (OMxMR[MM]
described in Table 16-103, OMxMR Field Descriptions, on page 16-195), indicates which
device IDs are targets of a multicast operation. The multicast group represents the most
significant three bits (bits[7–5]) of the RapidIO device IDs that are destinations of the message
operation. The multicast list indicates a list of targets within that group. Each individual bit, when
encoded, determines the least significant five bits of the RapidIO device IDs (bits[4–0]) that are
targets of the message operation. Therefore, multicast group 0 (MG = 0) contains target device
IDs (0, 1, ..., 31), multicast group 1 (MG = 1) contains target device IDs (32, 33, ... 63), and so
on.
In large transport mode, the extended multicast group represents the eight most significant bits
(bits[15–8]), the multicast group represents the next three bits (bits[7–5]) and the multicast list
indicates a list of targets within that group.
(bits[15–8]), the multicast group represents the next three bits (bits[7–5]) and the multicast list
indicates a list of targets within that group.
If multicast is enabled, this information in the multicast group and mask register is used to
determine the target of the message operation instead of the DTGTROUTE and EDTGTROUTE
fields in the Outbound Message Destination Port Register (see Table 16-107, OMxDPR Field
Descriptions, on page 16-200).
determine the target of the message operation instead of the DTGTROUTE and EDTGTROUTE
fields in the Outbound Message Destination Port Register (see Table 16-107, OMxDPR Field
Descriptions, on page 16-200).
OM
[0–1]
MGR
Outbound Message 0–1 Multicast Group Offset 0x13030 + x*0x100
Registers
Bit
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
—
TYPE
R
RESET
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
—
EMG
MG
TYPE
R
R/W
RESET
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Table 16-112. OMxMGR Field Descriptions
Bits
Name Description
—
31–11
0
Reserved. Write to zero for future compatibility.