參數(shù)資料
型號: IBM25PPC750L-DB0A350W
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 350 MHz, RISC PROCESSOR, CBGA360
封裝: 25 X 25 MM, 1.27 MM PITCH, CERAMIC, BGA-360
文件頁數(shù): 7/46頁
文件大?。?/td> 610K
代理商: IBM25PPC750L-DB0A350W
9/30/99
Version 2.0
Datasheet
Page 11
PowerPC 750 SCM RISC Microprocessor
Preliminary Copy
PID8p-750
60x Bus Input AC Specications
The following table provides the 60X bus input AC timing specifications for the PID8p-750 as defined in
Figure 3 and Figure 4. Input timing specifications for the L2 bus are provided in Section, “L2 Bus Input AC
Figure 2. SYSCLK Input Timing Diagram
60X Bus Input Timing Specications1
Num
Characteristic
300,333, 350, 366,
375, 400, 433, 450, 466, 500 MHz
Unit
Notes
Minimum
Maximum
10a
Address/Data/Transfer Attribute Inputs Valid to SYSCLK (Input
Setup)
2.5
ns
2
10b
All Other Inputs Valid to SYSCLK (Input Setup)
2.5
ns
3
10c
Mode Select Input Setup to HRESET (DRTRY,TLBISYNC)
8
tsysclk
4,5,6,7
11a
SYSCLK to Address/Data/Transfer Attribute Inputs Invalid (Input
Hold)
0.6
ns
2
11b
SYSCLK to All Other Inputs Invalid (Input Hold)
0.6
ns
3
11c
HRESET to mode select input hold
(DRTRY, TLBISYNC)
0
ns
4,6,7
Note:
1. Input specifications are measured from the midpoint voltage of the signal in question to the midpoint voltage of the rising edge of the input SYSCLK. Input
and output timings are measured at the pin (see Figure 3) Midpoint voltage (VM) is 1.4v for OVdd in 3.3v mode and OVDD/2 for all other I/O modes
2. Address/Data Transfer Attribute inputs are composed of the following–A[0-31], AP[0-3], TT[0-4],TBST, TSIZ[0-2], GBL, DH[0-31), DL[0-31], DP[0-7].
3. All other signal inputs are composed of the following–TS, ABB, DBB, ARTRY, BG, AACK, DBG, DBWO, TA, DRTRY, TEA, DBDIS, TBEN, QACK, TLBI-
SYNC.
4. The setup and hold time is with respect to the rising edge of HRESET (see Figure 4).
5. tSYSCLK, is the period of the external clock (SYSCLK) in nanoseconds (ns). The numbers given in the table must be multiplied by the period of SYSCLK to
compute the actual time duration (in ns) of the parameter in question.
6. These values are guaranteed by design, and are not tested.
7. This specification is for configuration mode select only. Also note that the HRESET must be held asserted for a minimum of 255 bus clocks after the
PLL re-lock time during the power-on reset sequence.
VM
CV
IL
CV
IH
1
2
4
3
4
SYSCLK
(Midpoint
Voltage)
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