參數(shù)資料
型號(hào): TMS320AV220
廠商: Texas Instruments, Inc.
英文描述: Video CD MPEG Decoder(視頻CD MPEG編碼器)
中文描述: 視頻CD MPEG解碼器(視頻光盤的MPEG編碼器)
文件頁(yè)數(shù): 29/31頁(yè)
文件大?。?/td> 612K
代理商: TMS320AV220
TMS320AV220
VIDEO CD MPEG DECODER
SCSS016A – JUNE 1994 – REVISED JANUARY 1996
29
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
tpd6
Random-Mode
Read
Page-Mode
Read
Random-Mode
Write
Page-Mode
Write
tRAS
tCSH
tRHCP
tRP
tpd3
tRCS
tCAS
tCP
tRRH
tpd4
tASR
tRAH
tRCD
tASC
tCAH
tRAL
tCAL
tpd7
tRCH
tpd5
tWCH
tpd6
tWCS
tDH
tRSH
tDS
th2
tsu8
Row
Address
Col Addr
Col Addr
Row
Address
Col Addr
Col Addr
Valid
Data
Valid
Data
SYSCLK
RAS
CAS
MA9–MA0
WE
MD15–MD0
CASIN
Figure 17. Local-DRAM-Bus Timing
tCAS
tpd4
SYSCLK
RAS
CAS
tc
tRP
tpd3
tRPC
tCHR
tCSR
tCP
tRAS
NOTE A: The ’AV220 WE signal does not necessarily go inactive during DRAM refreshes. Use DRAMs that do not acknowledge the state of WE
during DRAM refresh timing (i.e., when CAS is asserted while the RAS line is inactive).
Figure 18. Local DRAM CAS-before-RAS Refresh Timing
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