Vmetro M5210RP-EFF, User Manual, Page: 70 / 130

56
M5000 Series: User Guide Issued June 20, 2007
Mezzanine PMC Carrier
Interrupt routing
The PMC Carrier board has four interrupts from each of the three PMCs. These are routed
(multiplexed) to the M52xx board via an interrupt routing PLD (Programmable Logic Device).
The PMC Carrier board will distribute these interrupts to the base board interrupt destinations
according to the routing tables in “Interrupt Routing” on page 66.
FIGURE 6-5
Carrier Board
Interrupts
TABLE 6-3.
Interrupt routing table
MEZZ PMC#3 PMC#4 PMC#5
Interrupt pin A,B,C,D A,B,C,D A,B,C,D
0 D C B
1 A D C
2 B A D
3 C B A
Note – See “Interrupt Routing” on page 66 for mapping the PMC Carrier board interrupt pins to
the CPU interrupt
PMC#3
PMC#4
PMC#5
Interrupt routing PLD
MezzIRQ 0-3
To PowerMIDAS
board