參數(shù)資料
型號: TVP5040CPFP
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): 5/109頁
文件大小: 568K
代理商: TVP5040CPFP
4–2
To prevent this from happening, it is necessary for the master to wait until the I2C bus is free (that is, SCL high) before
generating a STOP condition, thus insuring that a valid STOP condition is generated. This provides the optimal
amount of delay and eliminates the need for a software-generated delay.
The I2C master must also wait until the I2C bus is free (that is, SCL high) before generating a START condition.
4.1.3.3 Implementation for PHI Bus
For PHI host interface-based applications, the interrupt request (INTREQ) pin (or interrupt status register polling) may
be used to determine when the TVP5040 is ready to proceed with host interface activity. This eliminates the need
for a software-generated delay.
4.1.3.4 Implementation for VIP
For VIP host interfaced-based application, the slave-terminate and master-retry mechanisms are used to handle the
latency after microprocessor restart. TVP5040 slaves terminate all VIP access until the microprocessor initialization
is completed. Meanwhile, the VIP master repeatedly retries the current VIP access until it is accepted by the
TVP5040. This eliminates the need for a software-generated delay.
4.1.4
Microcode Data File
TI provides the TVP5040 microcode as binary code in a Hex-ASCII file format. Figure 4–1 is an example of this file
format. The file is available via the TI Web pages beginning at URL: http://www.ti.com
80000
00000
303FC
C3F80
MSB
LSB
Figure 4–1. TVP5040 Microcode in Hex-ASCII Format
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