Channel multiplexing, Figure 2–34. four column transfer size – Altera SerialLite II Protocol User Manual
Page 56
56
Altera Corporation
SerialLite II Protocol Reference Manual
Data Link Layer Description
Figure 2–34. Four Column Transfer Size
Channel Multiplexing
Channel multiplexing allows a single link to carry more than one
independent stream of data. Both the regular data port and the priority
data port support channel multiplexing. Channel multiplexing can be
useful for such structures as multi-queue memories. Another use is in
distinguishing system messages from standard payload packets on the
priority port.
Up to 256 channels can be multiplexed on the regular data port, and up to
16 channels can be multiplexed on the priority data port. Interleaved
packets are supported by both data and priority packets. See detailed
description in
“Interleaved Data Packets” on page 2–43
. If the channel
multiplexing feature is not required, the channel number must be set to 0.
Lane
# 0
Lane
# 1
Lane
# 2
Lane
# 3
D8
D12
D0
D4
D9
D13
D1
D5
D10
D14
D2
D6
D11
D15
D3
D7
D8
D12
D0
D4
D9
D13
D1
D5
D10
D14
D2
D6
D11
D15
D3
D7
D16
IDL
IDL
IDL
IDL
SDP1
SDP2
IDL
SUP1
0 0
SDP1
0 1
EG P1
0 0
IDL
IDL
COM
COM
IDL
IDL
COM
COM
IDL
IDL
IDL
IDL
IDL
IDL
IDL
IDL
IDL
IDL
IDL
IDL
IDL
IDL
IDL
IDL
IDL
IDL
IDL
IDL
IDL
IDL
IDL
IDL
IDL
IDL
IDL
SLP
LD0
LD1
LD2
D16
D17
D18
D19
D20
D21
D22
D23
D24
IDL
IDL
CDP1
0 0
EG P1
0 1
Transfer size
of 4 columns
Time