3. Serial RapidIO Electrical Interface > Port Numbering
67
Tsi574 User Manual
June 6, 2016
Integrated Device Technology
www.idt.com
3.2
Port Numbering
The RapidIO ports on the Tsi574 are numbered sequentially from 0 to 7. The following table shows the
mapping between port numbers and the physical ports. These port numbers are used within the
destination lookup tables for ingress RapidIO ports and in numerous register configuration fields .
3.2.1
Port Configuration
Ports that operate in either 4x or 1x mode can be configured as either one 4x mode port or dual 1x
mode ports. For example, SP0 can be configured as either one 4x mode port, or Port 0 and Port 1 can be
dual 1x mode ports.
Figure 13: Port Configuration
3.3
Port Aggregation: 1x and 4x Modes
The RapidIO ports on the Tsi574 are grouped into pairs that share the same MAC. The MAC provides
the PMA/PCS encoding/decoding layers, as well as the RapidIO physical, transport and logical layer
functionality required of a RapidIO switch device.
Table 4: Tsi574 Port Numbering
Port Number
RapidIO Port
Mode
0
Serial Port 0 (SP0)
1x or 4x
1
Serial Port 1 (SP1)
1x
2
Serial Port 2 (SP2)
1x or 4x
3
Serial Port 3 (SP3)
1x
4
Serial Port 4 (SP4)
1x or 4x
5
Serial Port 5 (SP5)
1x
6
Serial Port 6 (SP6)
1x or 4x
7
Serial Port 7 (SP7)
1x
SP0
(4x or 1x)
SP1
(1x only)
Tx(Lane A,B,C,D)
Rx(Lane A,B,C,D)
X
4x Mode
SP0
(4x or 1x)
SP1
(1x only)
Dual 1x Mode
OR
Tx(Lane A)
Rx(Lane A)
Tx(Lane B)
Rx(Lane B)
Port 0
Port 1
Port 0