PPC7A Product Manual
Functional Description
8-34
1
st
Edition
Reset Register (Port 0x3)
This register provides a 4bit register that is not cleared or changed on any reset apart from a power up
when it is cleared to '0'.
MSB = D0, LSB = D7
D0 to D3:
Reserved Reads '0'
D4 to D7:
4 bit register
Board ID String (Port 0x4 to 0x7)
This register provides a board ID string, which shows 'PPC7A' when read as a 32 bit value.
Port 0x4
MSB = D0, LSB = D7
D0 to D7:
Reads 0x50 ('P')
Port 0x5
MSB = D0, LSB = D7
D0 to D7:
Reads 0x50 ('P')
Port 0x
6
MSB = D0, LSB = D7
D0 to D7:
Reads 0x43 ('C')
Port 0x
7
MSB = D0, LSB = D7
D0 to D7:
Reads 0x37 ('7')
Status Registers on CS1
These registers are accessed via the GT64260 CS1 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 to 0003
Checker board 1
RO
0004 to 0007
Checker board 2
RO
Where:
RO = Read Only
Checker Board 1 (Port 0x0 to 0x3)
This register provides a checker board value of 0x5555 5555 when read as a 32 bit value.
Checker Board 2 (Port 0x4 to 0x7)
This register provides a checker board value of 0xAAAA AAAA when read as a 32 bit value.
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