參數(shù)資料
型號(hào): TMS34020
廠商: Texas Instruments, Inc.
英文描述: GRAPHICS PROCESSORS
中文描述: 圖形處理器
文件頁(yè)數(shù): 47/82頁(yè)
文件大?。?/td> 1359K
代理商: TMS34020
TMS34020, TMS34020A
GRAPHICS PROCESSORS
SPVS004D – MARCH 1990 – REVISED NOVEMBER 1993
47
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
CLKIN
RESET
Q1
Q2
Q3
Q4
Q1
Q2
Q3
Q4
Q1
Q1
Q2
Q2
Q3
Q4
Q1
Q2
Q3
Q4
Q1
Q1
Q1
Q2
Q3
Q4
Q1
Q2
Q3
Q4
Q1
Q1
Q1
Q1
Q2
Q4
Q1
Q2
Q3
Q4
Q1
Q1
Q1
Q1
Q1
Q2
LCLK1
LCLK2
LCLK1
LCLK2
LCLK1
LCLK2
LCLK1
LCLK2
Case 1
Case 2
Case 3
Case 4
NOTE A: No timing dependencies of LCLK1 and LCLK2 relative to CLKIN or RESET are to be implied from this figure.
Figure 24. Synchronization of Multiple TMS34020s
Although RESET is not normallyrequired to be synchronous to CLKIN, in order to facilitate synchronization of
multiple TMS34020s in a system, the rising edge of RESET must meet the setup and hold requirements to
CLKIN so that all GSPs are certain to respond to the RESET on the same quarter cycle. The four possible
conditions for the state of the TMS34020 at the time RESET goes high are shown above. Quarter cycle 1 is
extended accordingly to provide synchronization of the GSPs. All TMS34020s to be synchronized must share
a common CLKIN and RESET. Within 10 CLKIN cycles after RESET goes high, all GSPs will be synchronized
to the same quarter cycle through the extension of Q1 cycles.
It is recommended that TMS34020A stretch mode not be used in multiprocessor systems.
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