SBPH400-3 データシートの表示（PDF） - STMicroelectronics
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SBPH400-3 Datasheet PDF : 43 Pages
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SBPH400-3
Figure 2.6 Remote access packet format
00
phy_ID
0 0 type
page
port
reg
logical inverse of first quadlet
reserved
Figure 2.7 Remote reply packet format
00
phy_ID
0 0 type
page
port
reg
data
logical inverse of first quadlet
The fields in the remote access and remote reply packets are interpreted as shown in Table
2.3.
Table 2.3 Remote Access and Remote Reply packet fields
Field
phy_ID
type
page
port
reg
data
Comment
Physical node identifier of the destination of the packet (type = 1 or 5)
Physical node identifier of the source of the packet (type = 3 or 7)
1 - register read of the base registers
3 - register contents (base registers)
5 - register read of the paged registers
7 - register contents (paged registers)
0 - Port Status Page
1 - Product Identification Page
2-7 - (these pages not implemented, always responds with zero)
Identify the port for the selected register page. For values 0, 1 and 2, the page is as
defined in Table 2.17. For all other values the SBPH400 always responds with zero.
If type = 1, then reg directly addresses one of the base registers.
If type = 5, then reg addresses 10002+reg in the selected page and port.
Current value of the SBPH400 register addressed by the immediately preceding Remote
Access packet (reserved and unimplemented fields and registers are returned as zero).
2.7.7 Remote Command and Confirmation packets
The SBPH400 responds to remote command packets by initiating the appropriate action and
immediately sending a remote confirmation packet.
Figure 2.8 Remote command packet format
00
phy_ID
0 0 type(8) 000
port
logical inverse of first quadlet
0000
0000
cmnd
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