Medium Access Control (MAC) and Physical Layer (PHY) - CISE

4-June-07 P1901_PRO_016_r0
7
6
Type
Always MUST be set to 0
4.4.2.4 Polling Token
The Polling Token has the following fields:
5
4
5F
73
EE
E2
Always MUST be set to 0
Always MUST be set to 0
Always MUST be set to 0
Always MUST be set to 0
Always MUST be set to 0
Always MUST be set to 0
Always MUST be set to 0
Unused Frame Symbols [7:0]
Always MUST be set to 0
Always MUST be set to 0
Always MUST be set to 0
Always MUST be set to 0
Always MUST be set to 0
Always MUST be set to 0
Always MUST be set to 0
Always MUST be set to 0
Figure 43 Silence Token
- Preamble – 32 bits. The preamble is equal to 0x5F73EEE2.
- Type – 4 bits. In this case, Type shall be POLLING (5).
Submission page 118 UPA-OPERA
3
2
Always MUST be set to 0
Unused Frame Symbols [12:8]
1
0
preamble
- Polling Type – 1 bit. (The Polling Type could be equal to ACTIVE(1) or ALIVE(0). When Polling Type is
ACTIVE, the Polling Token is requesting which nodes have data to be sent. When Polling Type is ALIVE,
the Polling Token is requesting which nodes are alive.
- Polling Destination Bank – 2 bits. The total number of destination ports of this Polling Token is divided
into 4 banks. The Polling Destination Bank is to know the destination bank of this polling. The first
available port is port 9.
0 � 9 - 40 ports
1 � 41 - 72 ports