參數(shù)資料
型號: RM5231A-250-H
廠商: PMC-SIERRA INC
元件分類: 微控制器/微處理器
英文描述: RM5231A⑩ Microprocessor with 32-Bit System Bus Data Sheet Preliminary
中文描述: 64-BIT, 250 MHz, MICROPROCESSOR, PQFP128
封裝: MQFP-128
文件頁數(shù): 27/40頁
文件大?。?/td> 595K
代理商: RM5231A-250-H
Proprietary and Confidential to PMC-Sierra, Inc and for its Customer’s Internal Use
Document ID: PMC-2002174, Issue 2
27
RM5231A Microprocessor with 32-Bit System Bus Data Sheet
Preliminary
4
Pin Descriptions
The following is a list of interface, interrupt, and miscellaneous pins available on the RM5231A.
An ‘*’ at the end of the signal name denotes an active low signal.
Table 5 System Interface
Pin Name
Type
Description
ExtRqst*
Input
External Request
Signals that the system interface is submitting an external request.
Release Interface
Signals that the processor is releasing the system interface to slave
state.
Read Ready
Signals that an external agent can now accept a processor read.
Write Ready
Signals that an external agent can now accept a processor write
request.
Valid Input
Signals that an external agent is now driving a valid address or data on
the SysAD bus and a valid command or data identifier on the SysCmd
bus.
Valid Output
Signals that the processor is now driving a valid address or data on the
SysAD bus and a valid command or data identifier on the SysCmd bus.
System Address/Data bus
A 32-bit address and data bus for communication between the
processor and an external agent.
System Address/Data check bus
A 4-bit bus containing parity check bits for the SysAD bus during data
cycles.
System Command/Data identifier bus
A 9-bit bus for command and data identifier transmission between the
processor and an external agent.
Reserved for system Command/Data identifier bus parity
For the RM5231A, unused on input and zero on output.
Release*
Output
RdRdy*
Input
WrRdy*
Input
ValidIn*
Input
ValidOut*
Output
SysAD[31:0]
Input/Output
SysADC[3:0]
Input/Output
SysCmd[8:0]
Input/Output
SysCmdP
Input/Output
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