Ram Words - Motorola MPC8260 PowerQUICC II User Manual

Part III. The Hardware Interface
T1, T2, T3, T4
Current Bank

10.6.4.1 RAM Words

The RAM word, shown in Figure 10-62, is a 32-bit microinstruction stored in one of 64
locations in the RAM array. It speciÞes timing for external signals controlled by the UPM.
Bit 0 1
Field CST1 CST2 CST3
Reset
R/W
Addr
Bit 16 17
Field G3T1 G3T3 G4T1/
DLT3
Reset
R/W
Addr (All 32 bits of the RAM word are addressed as shown in the address row above.)
10-70
External Signals Timing Generator (60x or Local)
CS Line
Selector
CS[0Ð11]
GPL0 GPL1
Figure 10-61. RAM Array and Signal Generation
2 3 4 5
CST4 BST1 BST2 BST3 BST4
(MCR[MAD] indirect addressing of 1 of 64 entries
18 19 20 21
G4T3/ G5T1 G5T3
WAEN
Figure 10-62. The RAM Word
MPC8260 PowerQUICC II UserÕs Manual
32 Bits
RAM Array
GPL2 GPL3 GPL4 GPL5
6 7 8 9
G0L
Ñ
R/W
22 23 24 25
REDO LOOP EXEN
Ñ
R/W
64
TSIZ, PS, A[30,31]
Byte Select
Packaging
BS
10 11 12 13
G0H G1T1 G1T3 G2T1 G2T3
26 27 28 29
AMX NA UTA TODT LAST
MOTOROLA
14 15
30 31