Memory Map and Devices
I/O-Bus
PPC/PMC-8260/DS1
5 - 21
For the flash device the byte addresses are generated by connecting the high order
60x-bus addresses 60x_ADDR<7,8,9> to the flash low addresses ADDR<2,1,0>
while PQ2 is held in RESET. This is also accomplished with the help of the low-as-
serted PowerSPAN_INT<5> signal as can be seen in figure 16 “Byte Address Gen-
eration for Flash Programming from PCI Bus via PowerSPAN II” on page 5-20.
The resulting memory map is shown in the following table.
Table 32:
Memory Map when PowerQUICC II is in Reset
60x Address
A<0...31>
60x Address
<7,8,9>
Flash Byte Address
<2,1,0>
Size
(MByte)
Addressable Flash
Byte Addresses
xx000000
xx3FFFFF
000
000
4
xxxxxxx0
xxxxxxx8
xx400000
xx7FFFFF
001
001
4
xxxxxxx1
xxxxxxx9
xx800000
xxBFFFFF
010
010
4
xxxxxxx2
xxxxxxxA
xxC00000
xxFFFFFF
011
011
4
xxxxxxx3
xxxxxxxB
x1000000
x13FFFFF
100
100
4
xxxxxxx4
xxxxxxxC
x1400000
x17FFFFF
101
101
4
xxxxxxx5
xxxxxxxD
x1800000
x1BFFFFF
110
110
4
xxxxxxx6
xxxxxxxE
x1C00000
x1FFFFFF
111
111
4
xxxxxxx7
xxxxxxxF
The boot flash device’s base address on the 60x bus must be programmed to
0XX00000
16
inside the PowerSPAN II.
Table 33:
Flash PROM Access from PCI Bus with PowerQUICC II Held in Reset
Device
Size
Width
60x Bus Address
Flash PROM
2 MByte
8 bit
00000000
16
Summary of Contents for PPC/PMC-8260/DS1
Page 1: ...PPC PMC 8260 DS1 Reference Guide P N 6806800B10A July 2006 ...
Page 8: ...viii PPC PMC 8260 DS1 ...
Page 22: ...xxii PPC PMC 8260 DS1 ...
Page 26: ...xxvi PPC PMC 8260 DS1 ...
Page 30: ...xxx PPC PMC 8260 DS1 ...
Page 31: ...1 Introduction ...
Page 32: ......
Page 39: ...2 Installation ...
Page 40: ......
Page 53: ...3 Indicators and Connectors ...
Page 54: ......
Page 64: ...On Board Connectors Indicators and Connectors 3 12 PPC PMC 8260 DS1 ...
Page 65: ...4 Firmware ...
Page 66: ......
Page 104: ...Code Examples Firmware 4 40 PPC PMC 8260 DS1 ...
Page 105: ...5 Memory Map and Devices ...
Page 106: ......
Page 132: ...Resetting the Devices Memory Map and Devices 5 28 PPC PMC 8260 DS1 ...
Page 133: ...6 TDM Channel Configuration ...
Page 134: ......
Page 145: ...A Troubleshooting ...
Page 146: ......
Page 148: ...A 4 PPC PMC 8260 DS1 ...
Page 150: ...I 2 PPC PMC 8260 DS1 ...