参数资料
型号: IBM25EMPPC740LDBB3000
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 300 MHz, RISC PROCESSOR, CBGA255
封装: 21 X 21 MM, 1.27 MM PITCH, CERAMIC, BGA-255
文件页数: 16/50页
文件大小: 600K
代理商: IBM25EMPPC740LDBB3000
5/20/99
Version 1.51
PowerPC 740 and PowerPC 750 Datasheet
Page 19
PowerPC 740 and PowerPC 750 Embedded Microprocessor
IBM CMOS 0.20 um Copper Technology EMPPC740L and EMPPC750L
L2 Bus Output AC Specications
The following table provides the L2 bus output interface AC timing specifications for the 750 as defined in
L2 Bus Output Interface AC Timing Specications1
See Table “Recommended Operating Conditions,” on page 7 for operating conditions, CL = 20pF
3
Num
Characteristic
L2CR[14-15] is equivalent to:
Unit
Notes
002
01
10
11
Min
Max
Min
Max
Min
Max
Min
Max
26
L2SYNC_IN to output valid, 300,
333, 366 MHz processor sorts.
3.2
3.7
Rsv5
Rsv5
ns
26
L2SYNC_IN to output valid, 400
MHz processor sort.
3.0
3.5
Rsv5
Rsv5
ns
26
L2SYNC_IN to output valid, 466
MHz processor sort.
2.6
3.1
Rsv5
Rsv5
ns
27
L2SYNC_IN to output hold
0.5
1.0
Rsv5
Rsv5
ns
28
L2SYNC_IN to high impedance
3.0
4.0
Rsv5
Rsv5
ns
Note:
1. All outputs are measured from the midpoint voltage (1.4v) of the rising edge of L2SYNC_IN to the midpoint voltage of the signal in question. The output
timings are measured at the pins.
2. The outputs are valid for both single-ended and differential L2CLK modes. For flow-through and pipelined reg-reg synchronous burst SRAMs,
L2CR[14-15] = 00 is recommended. For pipelined late-write synchronous burst SRAMs, L2CR[14-15] = 01 is recommended.
3. All maximum timing specifications assume CL = 20pF.
4. This measurement assumes CL= 5pF.
5. Reserved for future use.
6. Guaranteed by design and characterization, and not tested.
Figure 8. L2 Bus Output Timing Diagrams
27
VM
VM = Midpoint Voltage (1.4V)
L2SYNC_IN
26
ALL OUTPUTS
VM
28
L2DATA BUS
VM
相关PDF资料
PDF描述
IBM25EMPPC740LDBF4660 32-BIT, 466 MHz, RISC PROCESSOR, CBGA255
IBM25EMPPC750LFBE4000 32-BIT, 400 MHz, RISC PROCESSOR, CBGA360
IBM25PPC750L-DB0C333W 32-BIT, 333 MHz, RISC PROCESSOR, CBGA360
IBM25PPC740-EB0M3000 32-BIT, 300 MHz, RISC PROCESSOR, CBGA360
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