參數(shù)資料
型號: TVP5020
廠商: TEXAS INSTRUMENTS INC
元件分類: 顏色信號轉(zhuǎn)換
英文描述: COLOR SIGNAL DECODER, PQFP80
封裝: POWER, PLASTIC, TQFP-80
文件頁數(shù): 31/89頁
文件大?。?/td> 376K
代理商: TVP5020
2–23
Command Byte Bit Description
NAME
DESCRIPTION
DEVSEL1:0
Device select. Always 01 for TVP5020
R/W
1=Read 0=Write
F/R
1=FIFO 0=Register access
A11:8
Address bus upper 4 bits
For register accesses:
0000=VIP specific configuration registers
0001=General TVP5020 registers
0010=No latency read access phase 1
0011=No latency read access phase 2
For FIFO accesses:
0000=FIFO status 0
0001=FIFO status 1
0100=VBI FIFO
2.7.3.1
Access Latency and Wait States
VIP accesses to registers or the VBI FIFO require the TVP5020 to insert one or more wait states into the
access sequence. For register accesses, the wait states may total as much as 64
s. All writes will release
the host port immediately, but internal wait states will continue to be generated until the operation completes.
Any access attempts to the host port while the write operation is not completed will cause the slave to
terminate the operator. Reads (except for no-latency reads) will hold the host port until completion.
Wait
Command
Address
DC
Wait
Last Wait
Wait States Can Last Up to 64
s
Data
TA
Wait
Last Wait
Wait States Can Last Up to 64
s
Data
VC3
VC1
VC0
VC2
VC3
VC2
VC1
VC0
Figure 2–22. Functional Timing Reading from TVP (Example)
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