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Functional Description
Table 4-2 MV64360 MPP Pin Function Assignments (continued)
MPP Pin
Number
22
23
24
25
26
27
28
29
30
31
4.3.4.16 MV64360 Reset Configuration
The MV64360 supports two methods of device initialization following reset:
Pins sampled on the deassertion of reset
Partial pin sample on deassertion of reset plus serial ROM initialization via the I
user defined initialization.
The CPCI-6115 board supports both options. An onboard jumper setting is used to select the
option. If the pin sample only method is selected, then states of the various pins on the device
AD bus are sampled when reset is deasserted to determine the desired operating modes. The
following table describes the configuration options. Combinations of pullups, pulldowns and
jumpers are used to set the options. Some options are fixed and some are selectable at build
time by installing the proper pullup/pulldown resistor. Finally, some options may be selected
using an onboard jumper. Each option is described in the following table.
Using the SROM initialization method, any of the MV64360 internal registers or other system
components (that is, devices on the PCI bus) can be initialized. Initialization takes place by
sequentially reading 8 byte address/data pairs from the SROM and writing the 32-bit data to the
decoded 32-bit address until the data pattern matching the last serial data item register is read
from the SROM (default value 0xffffffff). An 8 KB EEPROM is provided onboard for this user
defined initialization of the MV64360.
76
Input/Output
Function
I
CompactPCI Bus Interrupts - INTC#
I
CompactPCI Bus Interrupts - INTD#
MPP[17:16] PCI_1 Interrupts
MPP[19:18] PCI_0 Interrupts,
MPP[23:20] CompactPCI Interrupts
O
MV64360 SROM initialization active (InitAct)
O
Watchdog Timer Expired output (WDE#)
O
Watchdog Timer NMI output (WDNMI#)
I
Unused
O
PCI Bus 0.0 - PMC 2 secondary grant (GNTB#)
I
PCI Bus 0.0 - PMC 2 secondary request (REQB#)
O
PCI Bus 0.0 - PMC 2 grant
I
PCI Bus 0.0 - PMC 2 request
MPP[27:24] Miscellaneous
MPP[31:28] PCI_0 Arbitration Request-Grant Pairs
CPCI-6115 CompactPCI Single Board Computer Installation and Use (6806800A68D)
MV64360 System Controller
2
C bus for
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