參數(shù)資料
型號(hào): GT-64111
廠商: Galileo Technology Services, LLC
英文描述: System Controller for RC4640, RM523X and VR4300 CPUs(用于RC4640, RM523X和 VR4300 CPUs的系統(tǒng)控制器)
中文描述: 系統(tǒng)控制器(用于RC4640,RM523X和VR4300處理器的系統(tǒng)控制器的RC4640,RM523X和VR4300處理器)
文件頁(yè)數(shù): 39/130頁(yè)
文件大小: 881K
代理商: GT-64111
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GT-64111 System Controller for RC4640, RM523X and VR4300 CPUs
16
Revision 1.0
1. ‘X’ denotes “don’t care” but ‘X’ signals must be driven to a valid 0/1.
1. ‘X’ denotes “don’t care” but ‘X’ signals are driven to a valid 0/1 by GT-64111.
SysCmd[4]
CPU mode select
0 - VR4300 mode
1 - R4600 mode
SysCmd[3:0]
Encoded to indicate size of the transfer
TABLE 2. Address Phase SysCmd[8:0] Encodings (driven by CPU/Local Master)
S ysC md[ 8 :0 ] E n co din g 1
C o m m and
Mnemo n ic
C o mma nd D esc ri pti o n
8
7
6
5
4
3
2
1
0
0000110
00
RdByte
Read a single byte
0000110
01
RdShort
Read 16 bits
0000110
10
RdTriByte
Read 3 bytes
0000110
11
RdWord
Read 4 bytes (single word)
0000111
X
Rd2Words
Read 2 words (8 bytes) in a burst
000010
X
0
Rd4Words
Read 4 words (16 bytes) in a burst
000010
X
1
Rd8Words
Read 8 words (32 bytes) in a burst
0010110
00
WrByte
Write a single byte
0010110
01
WrShort
Write 16 bits
0010110
10
WrTriByte
Write 3 bytes
0010110
11
WrWord
Write 4 bytes (single word)
0010111
X
Wr2Words
Write 2 words (8 bytes) in a burst
001010
X
0
Wr4Words
Write 4 words (16 bytes) in a burst
001010
X
1
Wr8Words
Write 8 words (32 bytes) in a burst
TABLE 3. Data Identifier SysCmd[8:0] Encodings (driven by GT-64111)
S ysC md[ 8 :0 ] E n co din g 1
C o m m and
Mnemo n ic
C o mma nd D esc ri pti o n
8
7
6
5
4
3
2
1
0
1
0
EXXXXX
REOD
Indicates last valid data in a burst
E = 0 Data is good
E = 1 Data is erroneous
1
0
EXXXXX
RD
Indicates valid data within a burst
E = 0 Data is good
E = 1 Data is erroneous
TABLE 1. SysCmd Bit Summary
S ysC md B i t
F unct i on
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