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| 型號(hào)： | IDT79RC64T574-250DZ |
| 廠商： | IDT, Integrated Device Technology Inc |
| 文件頁(yè)數(shù)： | 12/28頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC MPU 64BIT EMB 250MHZ 128-QFP |
| 標(biāo)準(zhǔn)包裝： | 24 |
| 處理器類(lèi)型： | RISC 64-位 |
| 速度： | 250MHz |
| 電壓： | 2.5V |
| 安裝類(lèi)型： | 表面貼裝 |
| 封裝/外殼： | 128-BQFP 裸露焊盤(pán) |
| 供應(yīng)商設(shè)備封裝： | 128-PQFP（28x28） |
| 包裝： | 托盤(pán) |
| 其它名稱(chēng)： | 79RC64T574-250DZ |
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December 14, 2001
79RC64574 79RC64575
Device Overview1
IDT’s 79RC64574/575 processors serve a wide range of perfor-
mance-critical embedded applications that include high-end internet-
working systems, digital set-top boxes, web browsers, color printers,
and graphics terminals.
The RC64574/575 allow a socket compatible upgrade path for IDT’s
RC4640/50 and RC64474/475 processors. This unprecedented upgrad-
ability allows a 2:1 range of frequencies; 4:1 range of cache size; 15:1
range of floating-point; and 4:1 range of DSP performance in a single
socket.
With special emphasis on system bandwidth, floating- point and DSP
operations, the RC64574/575 have been optimized for high-perfor-
mance applications through the integration of high-performance compu-
tational units and a high-performance memory hierarchy. The result is a
low-cost CPU that is capable of more than 330 Dhrystone MIPS.
Through the RC64574/64575 processors IDT offers:
◆
High-performance upgrade paths to existing embedded
customers in the internetworking, office automation and
visualization markets.
◆
Significant floating-point performance improvements over
currently available, moderately priced MIPS CPUs.
◆
Performance improvements through the use of the MIPS-IV ISA.
◆
High-performance DSP acceleration
1. Detailed system operation information is provided in the RC64574/RC64575
user’s manual.
Instruction Issue Mechanism
The RC64574 and RC64575 are limited dual-issue super-scalar
machines that use a traditional 5-stage integer pipeline, as shown in the
pipeline diagram on Page 3. For multi-issue operations, these devices
recognize the following two general classes of instructions:
◆
Floating-point ALU
◆
All others
Such a broad separation of instruction classes insure that there are
no data dependencies to restrict multi-issue performance. As they are
brought on-chip, these instruction classes are pre-decoded by the
RC64574/575, and the class information is then stored in the instruction
cache. Assuming there are no pending resource conflicts, the devices
can issue one instruction per class per pipeline clock cycle.
However, longer latency resources—in either the floating-point ALU
(for example, division or square root instructions) or integer unit (such as
multiply)—can restrict the issue of instructions. Note that these proces-
sors do not perform out-of-order or speculative execution; instead, the
pipeline slips until the required resource becomes available.
On dual-issue instruction pairs, there are no alignment restrictions,
and the RC64574/575 fetch two instructions from the cache per cycle.
Thus, for optimal performance, compilers should attempt to align branch
targets to allow dual-issue on the first target cycle, because the instruc-
tion cache only performs aligned fetches.
RISCore4000/RISCore5000 Family of Socket Compatible Processors
32-bit External Bus Processors
64-bit External Bus Processors
RC4640
RC64474
RC64574
RC4650
RC64475
RC64575
CPU
64-bit RISCore4000 w/
DSP extensions
64-bit RISCore4000
64-bit RISCore5000 w/
DSP extensions
64-bit RISCore4000 w/
DSP extensions
64-bit RISCore4000
64-bit RISCore5000 w/
DSP extensions
Performance
>350MIPS
>330MIPS
>350MIPS
>330MIPS
FPA
89 mflops, single preci-
sion only
125 mflops, single and
double precision
666 mflops, single and
double precision
89 mflops, single preci-
sion only
125 mflops, single and
double precision
666 mflops, single and
double precision
Caches
8kB/8kB, 2-way,
lockable by set
16kB/16kB, 2-way,
lockable by set
32kB/32kB, 2-way,
lockable by line
8kB/8kB, 2-way,
lockable by set
16kB/16kB, 2-way,
lockable by set
32kB/32kB, 2-way,
lockable by line
External Bus
32-bit
32-bit, Superset pin
compatible w/RC4640
32-bit, Superset pin
compatible w/RC4640,
RC64474
32- or 64-bit
32-or 64-bit, Superset
pin compatible w/
RC4650
32-or 64-bit, Superset
pin compatible w/
RC4650, RC64475
Voltage
3.3V
2.5V
3.3V
2.5V
Frequencies
100-267 MHz
180-250 MHz
200-250 MHz
100-267 MHz
180-250 MHz
250 MHz
Packages
128 PQFP
128 QFP
208 QFP
MMU
Base-Bounds
96 page TLB
Base-Bounds
96 page TLB
Key Features
Cache locking, on-chip
MAC, 32-bit external
bus
Cache locking, JTAG,
syncDRAM mode, 32-bit
external bus
Cache locking, JTAG,
syncDRAM mode, 32-bit
external bus
Cache locking, on-chip
MAC, 32-bit & 64 bit
bus option
Cache locking, JTAG,
syncDRAM mode, 32-
64- bit bus option
Cache locking, JTAG,
syncDRAM mode, 32-
64- bit bus option
Table 1 RISCore4000/RISCore5000 Processor Family
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| IDT79RC64T575-200DP | 功能描述:IC MPU 64BIT EMB 200MHZ 208-QFP RoHS:否 類(lèi)別:集成電路 (IC) >> 嵌入式 - 微處理器 系列:- 標(biāo)準(zhǔn)包裝:2 系列:MPC8xx 處理器類(lèi)型:32-位 MPC8xx PowerQUICC 特點(diǎn):- 速度:133MHz 電壓:3.3V 安裝類(lèi)型:表面貼裝 封裝/外殼:357-BBGA 供應(yīng)商設(shè)備封裝:357-PBGA（25x25） 包裝:托盤(pán) |
| IDT79RC64T575-250DP | 功能描述:IC MPU 64BIT EMB 250MHZ 208-QFP RoHS:否 類(lèi)別:集成電路 (IC) >> 嵌入式 - 微處理器 系列:- 標(biāo)準(zhǔn)包裝:2 系列:MPC8xx 處理器類(lèi)型:32-位 MPC8xx PowerQUICC 特點(diǎn):- 速度:133MHz 電壓:3.3V 安裝類(lèi)型:表面貼裝 封裝/外殼:357-BBGA 供應(yīng)商設(shè)備封裝:357-PBGA（25x25） 包裝:托盤(pán) |
| IDT79RC64V474-180DZ | 功能描述:IC MPU 64BIT EMB 180MHZ 128-QFP RoHS:否 類(lèi)別:集成電路 (IC) >> 嵌入式 - 微處理器 系列:- 標(biāo)準(zhǔn)包裝:2 系列:MPC8xx 處理器類(lèi)型:32-位 MPC8xx PowerQUICC 特點(diǎn):- 速度:133MHz 電壓:3.3V 安裝類(lèi)型:表面貼裝 封裝/外殼:357-BBGA 供應(yīng)商設(shè)備封裝:357-PBGA（25x25） 包裝:托盤(pán) |
| IDT79RC64V474-200DZ | 功能描述:IC MPU 64BIT EMB 200MHZ 128-QFP RoHS:否 類(lèi)別:集成電路 (IC) >> 嵌入式 - 微處理器 系列:- 標(biāo)準(zhǔn)包裝:2 系列:MPC8xx 處理器類(lèi)型:32-位 MPC8xx PowerQUICC 特點(diǎn):- 速度:133MHz 電壓:3.3V 安裝類(lèi)型:表面貼裝 封裝/外殼:357-BBGA 供應(yīng)商設(shè)備封裝:357-PBGA（25x25） 包裝:托盤(pán) |
| IDT79RC64V475-180DP | 功能描述:IC MPU 64BIT EMB 180MHZ 208-QFP RoHS:否 類(lèi)別:集成電路 (IC) >> 嵌入式 - 微處理器 系列:- 標(biāo)準(zhǔn)包裝:2 系列:MPC8xx 處理器類(lèi)型:32-位 MPC8xx PowerQUICC 特點(diǎn):- 速度:133MHz 電壓:3.3V 安裝類(lèi)型:表面貼裝 封裝/外殼:357-BBGA 供應(yīng)商設(shè)備封裝:357-PBGA（25x25） 包裝:托盤(pán) |
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