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參數(shù)資料
| 型號： | IBM25PPC750FX-DB0513T |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, 700 MHz, RISC PROCESSOR, CBGA292 |
| 封裝： | 21 X 21 MM, 1 MM PITCH, CERAMIC, BGA-292 |
| 文件頁數(shù)： | 42/62頁 |
| 文件大小： | 452K |
| 代理商： | IBM25PPC750FX-DB0513T |
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Datasheet
DD
2.X
Preliminary
PowerPC
750FX
RISC
Microprocessor
Body_750FX_DS_DD2.X.fm.2.0
June
9,
2003
5.
System
Design
Information
Page
45
of
63
DH[0:31]
High
Input/Output
Data Bus
Keeper
1, 3, 4
DL[0:31]
High
Input/Output
Data Bus
Keeper
1, 3, 4
DP[0:7]
High
Input/Output
DRTRY
Low
Input
Keeper
3, 4
GBL
Low
Input/Output
Transfer Attributes
Keeper
1, 3, 4
GND
—
Power Supply
HRESET
Low
Input
Interrupt/Resets
Keeper
Active driver
2, 3, 4, 5
INT
Low
Input
Interrupt/Resets
Keeper
Active driver or pullup
3, 4, 5
L1_TSTCLK
High
Input
LSSD
Not enabled
5K
Pullup/pulldown, as required
5
L2_TSTCLK
High
Input
LSSD
Not enabled
5K
Pullup required to OVDD
5
LSSD_MODE
Low
Input
LSSD
Not enabled
5K
Pullup required to OVDD
5
MCP
Low
Input
Interrupt/Resets
Keeper
Active driver or pullup
3, 4, 5
OVDD
—
Power Supply
PLL_CFG[0:4]
High
Input
Clock Control
Keeper
As required
Pullup/pulldown, as required
3, 4, 5
PLL_RNG[0:1]
High
Input
Keeper
As required
Pullup/pulldown, as required
3, 4, 5
QACK
Low
Input
Control
Keeper
Must be actively driven
3, 4, 5
QREQ
Low
Output
Status/Control
Keeper
Chip actively drives
3, 4, 5
RSRV
Low
Output
Keeper
No connect
3, 4, 5
SMI
Low
Input
Keeper
3, 4
SRESET
Low
Input
Interrupt/Resets
Keeper
Active driver or pullup
2, 3, 4, 5
Table 5-6. Input-Output Usage (Continued)
750FX Signal
Name
Active Level
Input/
Output
Usage Group
Input/Output with
Internal
Pullup Resistors
Level Protect
Required
External
Resistor
Comments
Notes
Notes:
1. Depends on the system design. The electrical characteristics of the 750FX do not add additional constraints to the system design, so whatever is done with the net will depend on the system require-
ments.
2. HRESET, SRESET, and TRST are signals used for ESP and RISCWatch to enable proper operation of the debuggers. Logical AND gates should be placed between these signals and PowerPC
750FX RISC Microprocessor. (Refer to Figure 5-7 on page 48.)
3. The 750FX provides protection from meta-stability on inputs through the use of a “keeper” circuit on specific inputs. Refer to Level Protection on page 48 for a more detailed description.
4. If a system design requires a signal level to be maintained while not being actively driven, an external resistor or device must be used (Keepers assure no meta-stability of inputs but do not guarantee
a level).
5. The 750FX does not require external pullups on address and data lines. Control lines must be treated individually.
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