參數(shù)資料
型號(hào): TVP5020
廠商: TEXAS INSTRUMENTS INC
元件分類(lèi): 顏色信號(hào)轉(zhuǎn)換
英文描述: COLOR SIGNAL DECODER, PQFP80
封裝: POWER, PLASTIC, TQFP-80
文件頁(yè)數(shù): 38/89頁(yè)
文件大?。?/td> 376K
代理商: TVP5020
2–29
2.10 Host Port – Mode B Timing
Host port mode B has a bus interface that accommodates the Intel type of control signals. The diagram
below shows the timing of the mode B signals. The host presents the address and chip select when the
command (VC1 or VC2) transitions low. The VMI module pulls VC0 low until the read or write operation is
complete. VC1 and VC2 cannot both be low while VC3 is low.
125 ns Max
85 ns Min
20 ns Min
Write Data
Read Data
VC2 (RD)
VC1 (WR)
VC3 (CS)
A (0–1)
D (0–7)
VC0 (READY)
Figure 2–27. Host Port Mode B Timing
2.11 Host Port – Mode C Timing (PPC)
Host port mode C has a bus interface that accommodates the IBM PowerPC 403GC type of control signals.
The Figure 2–21 shows the timing of the mode C signals. Mode C is similar to mode A (Motorola) except
that a ready signal is used instead of VC0.
125 ns Max
85 ns Min
20 ns Min
Read Data
Write Data
VC2 (DS)
VC1 (R/W)
A (0–1)
D (0–7)
VC0 (READY)
Figure 2–28. Host Port Mode C Timing
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