參數(shù)資料
型號: IBM25PPC750GXEBB6542T
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 1000 MHz, RISC PROCESSOR, CBGA292
封裝: 21 X 21 MM, 1 MM PITCH, CERAMIC, BGA-292
文件頁數(shù): 16/74頁
文件大?。?/td> 1054K
代理商: IBM25PPC750GXEBB6542T
Datasheet
IBM PowerPC 750GX RISC Microprocessor
DD1.X
750GX_ds_body.fm SA14-2765-02
September 2, 2005
Electrical and Thermal Characteristics
Page 23 of 73
3.6 60x Bus Output AC Specifications
Table 3-9 provides the 60× bus output AC timing specifications for the 750GX as defined in Figure 3-7 on
Table 3-9. 60x Bus Output AC Timing Specifications
See Table 3-2 on page 15 for operating conditions.1, 4, 6
Figure 3-7
Timing
Reference
Characteristic
1.8 V
2.5 V
3.3 V
Unit
Notes
Min.
Max.
Min.
Max.
Min.
Max.
12
SYSCLK to Output Driven
(Output Enable Time)
0.3
0.3
0.3
ns
13
SYSCLK to Output Valid
2.4
2.3
2.4
ns
14
SYSCLK to Output Invalid (Output Hold)
1.0
0.6
0.6
ns
15
SYSCLK to Output High Impedance
(all signals except address retry [ARTRY],
address bus busy [ABB], and data bus
busy [DBB])
—2.5
2.5
ns
16
SYSCLK to ABB and DBB high impedance
after precharge
—1.0
1.0
tSYSCLK
17
SYSCLK to ARTRY high impedance
before precharge
—3.0
3.0
ns
18
SYSCLK to ARTRY precharge enable
0.2
×
tSYSCLK +
1.0
0.2
×
tSYSCLK +
1.0
0.2
×
tSYSCLK +
1.0
—ns
19
Maximum delay to ARTRY precharge
1.0
1.0
1.0
tSYSCLK
20
SYSCLK to ARTRY high impedance
after precharge
—2.0
2.0
tSYSCLK
Notes:
1. All output specifications are measured from the VM of the rising edge of SYSCLK to the midpoint of the output signal in question
using a test load as shown in Figure 3-6 on page 24. Both input and output timings are measured at the pin. Timings are deter-
mined by design.
2. tSYSCLK is the period of the external bus 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 of the parameter in question.
3. Nominal precharge width for ARTRY is 1.0 tSYSCLK.
4. Guaranteed by design and characterization, and not tested.
5. Output Valid timing increases as the VDD is reduced. These values assume a VDD minimum of 1.4 V.
6. See Figure 3-6 on page 24 and Figure 3-7 on page 25 for output loading and timing definitions.
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