PPC7A Product Manual
Functional Description
8-33
1
st
Edition
Control and Status Registers on CS0
These registers are accessed via the GT64260 CS0 address window (see GT64260 for more information
for setting up this address window).
CS0 I/O P
ORT
(H
EX
)
D
ESCRIPTION
T
YPE
0000
Board ID
RO
0002
Last Reset source
RO
0003
Reset register
R/W
0004 to 0007
Board ID string
RO
Where:
R/W = Read/Write
RO = Read Only
Board ID (Port 0x0)
This register provides Board hardware type.
MSB = D0, LSB = D7
D0 to D7:
Board ID register
0x0E = PPC7A - 7410/755
0x0F = PPC7A – 745x
0x10 = PPC7FW (MPC7410 with Firewire)
All others patterns mean the board is not a PPC7A
Last Reset Source (Port 0x2)
This register provides information about what caused the last reset.
MSB = D0, LSB = D7
D0 to D2:
Reserved
D3:
GT64260 watchdog timed out
0 = Did not cause the last reset
1 = Caused the last reset
D4:
MAX706 Watchdog Timed out
0 = Did not cause the last reset
1 = Caused the last reset
D5: Reset
switch
0 = Did not cause the last reset
1 = Caused the last reset
D6: Universe
0 = Did not cause the last reset
1 = Caused the last reset
D7:
RiscWatch connector reset driven
0 = Did not cause the last reset
1 = Caused the last reset
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