参数资料
型号: STP1080ABGA-83
元件分类: 微控制器/微处理器
英文描述: SPECIALTY MICROPROCESSOR CIRCUIT, PBGA256
封装: PLASTIC, BGA-256
文件页数: 20/22页
文件大小: 124K
代理商: STP1080ABGA-83
197
Companion Device for 167/200 MHz UltraSPARC-I Systems
UltraSPARC-I Data Buffer (UDB-I)
STP1080A
July 1997
There is a pin (UDB_CE) from the UDB for indicating when a single bit ECC error is detected and corrected.
There is a pin (UDB_UE) from the UDB for identifying uncorrectable ECC errors. If asserted during a E-Cache
miss, the new line must not be marked valid in the E-Cache or D-Cache. ECC on the full DataBus is
checked/generated for all system transactions.
TABLE 4: CNTL[4:0] Encodings
CNTL
Mnemonic
Action
00000
Noop
00001
rd_nodeid
Read nodeid (during reset)
00010
rd_ctrl
Read UDB control register (UDB_h and UDB_l)
00011
rd_stat
Read UDB status register (UDB_h and UDB_l)
00100
rd_mondor0
Read interrupt vector[0] (PC)
00101
rd_mondor1
Read interrupt vector[1] (Pointer)
00110
rd_mondor2
Read interrupt vector[2] (Data)
00111
rd_readbuf
Read buffer
01000
mv_wrback0
Move writeback buffer[0] to snoop buffer
01001
mv_wrback1
Move writeback buffer[1] to snoop buffer
01010
mv_wrback2
Move writeback buffer[2] to snoop buffer
01011
mv_wrback3
Move writeback buffer[3 to snoop buffer
10000
wr_ctrl_l
Write UDB_l control register (LS)
10001
wr_ctrl_h
Write UDB_h control register (MS)
10010
wr_stat_l
Write UDB_l status register (LS)
10011
wr_stat_h
Write UDB_h status register (MS)
10100
wr_mondos0
Write mondo vector [0] (by CPU)
10101
wr_mondos1
Write mondo vector [1] (by CPU)
10110
wr_mondos2
Write mondo vector [2] (by CPU)
11000
wr_snoop
Write snoop buffer
11001
wr_ncst
Write noncacheable store buffer
11010
wr_wrback
Write writeback buffer
11100
mv_mondos0
Move interrupt vector[0] to writeback buffer
11101
mv_mondos1
Move interrupt vector[1] to writeback buffer
11110
mv_mondos2
Move interrupt vector[2] to writeback buffer
11111
mv_mondos3
Move interrupt vector[3](fake) to wrback buffer
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