Evaluation Board Manual
Preliminary PPC750FX Evaluation Board
750FXebm_ch4.fm
June 10, 2003
Programming the System Controller
Page 35 of 115
4.2.4 Device Bank 3 Parameters (FRAM)
Table 4-5. Device Bank 3 Parameters = 0x8D891445
Field Value (bin) Comment
TurnOff 101
Number of Sysclk cycles that the system controller does not drive the
address/data bus after completion of a device read
Acc2First 1000
Number of Sysclk cycles from the de-assertion of ALE to the cycle that the
first read data is sampled
Acc2Next 010
Number of Sysclk cycles in a burst read access between the cycle that
samples data N to the cycle that samples data N+1
ALE2Wr 010 Number of Sysclk cycles from ALE de-assertion to the assertion of Wr[0]
WrLow 100 Number of Sysclk cycles that Wr[0] is active
WrHigh 100
Number of Sysclk cycles between data beats of a burst write that Wr[0] is
held in-active. BAdr and data are held valid for WrHigh-1 cycles
DevWidth 00 Device width of 8 bits
TurnOffExt 0 TurnOff extension (most significant bit)
Acc2FirstExt 1 Acc2First extension (most significant bit)
Acc2NextExt 1 Acc2Next extension (most significant bit)
ALE2WrExt 0 ALE2Wr extension (most significant bit)
WrLowExt 1 WrLow extension (most significant bit)
WrHighExt 1 WrHigh extension (most significant bit)
BadrSkew 00 Number of Sysclk cycles from when BAdr changes to the read of the data
DPEn 0 Parity Disabled
Reserved 1
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