参数资料
型号: MPC5123VY400BR
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: RISC PROCESSOR, PBGA516
封装: 27 X 27 MM, ROHS COMPLIANT, PLASTIC, TFBGA-516
文件页数: 42/86页
文件大小: 1266K
代理商: MPC5123VY400BR
Electrical and Thermal Characteristics
MPC5121E/MPC5123 Data Sheet, Rev. 1
Freescale Semiconductor
47
In PIO write mode, timing waveforms are somewhat different as shown in Figure 25.
Figure 25. PIO Write Mode Timing
To fulfill this timing, several parameters need to be observed as shown in Table 3-27.
t5
t5(min) = tco + tsu + tbuf + tbuf + tcable1 + tcable2
If not met, increase time_2r
A9.23
t6
0
A9.24
tA
tA(min) = (1.5 + time_ax) * T -
(tco + tsui + tcable2 + tcable2 + 2*tbuf)
calculate and programming
time_ax, see Reference
Manual
A9.25
trd
trd1
trd1(max) = (-trd) + (tskew3 + tskew4)
trd1(min) = (time_pio_rdx - 0.5 )*T - (tsu + thi)
(time_pio_rdx - 0.5) * T > tsu + thi + tskew3 + tskew4
calculate and programming
time_pio_rdx, see Reference
Manual
A9.26
t0
t0(min) = (time_1 + time_2 + time_9) * T
time_1, time_2r, time_9
A9.27
Table 3-26. Timing Parameters PIO Read (continued)
ATA
Parameter
PIO Read
Mode Timing
Parameter
Value
How to meet
SpecID
ADDR
DIOR
Write Data (15:0)
IORDY
t1
t2r
t9
DIOW
buffer_en
ton
tA
tB
t4
toff
t1
Preliminary
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