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参数资料
| 型号： | IBM25PPC405GPR-3BA333CZ |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, 333 MHz, RISC PROCESSOR, PBGA456 |
| 封装： | 35 MM, PLASTIC, EBGA-456 |
| 文件页数： | 28/56页 |
| 文件大小： | 1095K |
| 代理商： | IBM25PPC405GPR-3BA333CZ |
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Preliminary
PowerPC 405GPr Embedded Processor Data Sheet
34
External Master Peripheral Interface
PerClk
Peripheral clock to be used by an external master and by
synchronous peripheral slaves.
O
5V tolerant
3.3V LVTTL
ExtReset
Peripheral reset to be used by an external master and by
synchronous peripheral slaves.
O
5V tolerant
3.3V LVTTL
HoldReq
Hold Request, used by an external master to request ownership
of the peripheral bus.
I
5V tolerant
3.3V LVTTL
1, 5
HoldAck
Hold Acknowledge, used by the PPC405GPr to transfer
ownership of peripheral bus to an external master.
O
5V tolerant
3.3V LVTTL
6
ExtReq
ExtReq is used by an external master to indicate it is prepared to
transfer data.
I
5V tolerant
3.3V LVTTL
1
ExtAck
ExtAck is used by the PPC405GPr to indicate a data transfer
cycle.
O
5V tolerant
3.3V LVTTL
6
HoldPri
Used by an external master to indicate the priority of a given
external master tenure.
I
5V tolerant
3.3V LVTTL
1
BusReq
Used when the PPC405GPr needs to regain control of peripheral
interface from an external Master.
O
5V tolerant
3.3V LVTTL
PerErr
An input used to indicate to the PPC405GPr that an external
slave peripheral error occurred.
I
5V tolerant
3.3V LVTTL
1, 5
Internal Peripheral Interface
UARTSerClk
Serial Clock used to provide an alternate clock to the internally
generated serial clock. Used in cases where the allowable
internally generated baud rates are not satisfactory. This input
can be individually connected to either UART.
I
5V tolerant
3.3V LVTTL
1
UART0_Rx
UART0 Serial Data In.
I
5V tolerant
3.3V LVTTL
1
UART0_Tx
UART0 Serial Data Out.
O
5V tolerant
3.3V LVTTL
6
UART0_DCD
UART0 Data Carrier Detect.
I
5V tolerant
3.3V LVTTL
1
UART0_DSR
UART0 Data Set Ready.
I
5V tolerant
3.3V LVTTL
1
UART0_CTS
UART0 Clear To Send.
I
5V tolerant
3.3V LVTTL
1
UART0_DTR
UART0 Data Terminal Ready.
O
5V tolerant
3.3V LVTTL
6
UART0_RTS
UART0 Request To Send.
O
5V tolerant
3.3V LVTTL
6
UART0_RI
UART0 Ring Indicator.
I
5V tolerant
3.3V LVTTL
1
Signal Functional Description (Part 5 of 8)
Multiplexed signals are shown in brackets following the first signal name assigned to each multiplexed ball.
Notes:
1. Receiver input has hysteresis.
2. Must pull up. See “Pull-Up and Pull-Down Resistors” on page 45 for recommended termination values.
3. Must pull down. See “Pull-Up and Pull-Down Resistors” on page 45 for recommended termination values.
4. If not used, must pull up.
5. If not used, must pull down.
6. Strapping input during reset; pull up or pull down as required.
7. Pull-up may be required. See “External Bus Control Signals” on page 46.
Signal Name
Description
I/OType
Notes
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相关代理商/技术参数 |
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| IBM25PPC405GPR3BB266 | 制造商:IBM 功能描述: |
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