Functional Description
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3
Note The information in Table 3-7 applies to access timing when
configured for devices with an access time equal to 5 clock
periods.
Note The information in Table 3-8 applies to access timing when
configured for devices with an access time equal to 3 clock
periods.
Table 3-8. PPC60x Bus to ROM/Flash Access Timing
(30ns @ 100 MHz)
ACCESS TYPE
CLOCK PERIODS REQUIRED FOR: Total
Clocks
1st Beat 2nd Beat 3rd Beat 4th Beat
16
Bits 64
Bits 16
Bits 64
Bits 16
Bits 64
Bits 16
Bits 64
Bits 16
Bits 64
Bits
4-Beat Read 34 13 28 7 28 7 28 7 118 34
4-Beat Write N/A N/A
1-Beat Read (1 byte)1313------1313
1-Beat Read (2 to 8
bytes) 3413------3413
1-Beat Write 2121------2121