參數(shù)資料
型號: TVP5031PFP
廠商: TEXAS INSTRUMENTS INC
元件分類: 顏色信號轉換
英文描述: COLOR SIGNAL DECODER, PQFP80
封裝: POWER, PLASTIC, TQFP-80
文件頁數(shù): 59/92頁
文件大?。?/td> 415K
代理商: TVP5031PFP
2–46
The interrupt enable register B is used by the external processor to mask unnecessary interrupt sources for interrupt
B. Bits loaded with a 1 allows the corresponding interrupt condition to generate an interrupt on the external pin.
Conversely bits loaded with a 0 masks the corresponding interrupt condition from generating an interrupt on the
external pin. Note this register only affects the external terminal, it does not affect the bits in the interrupt status
register. A given condition can set the appropriate bit in the status register and not cause an interrupt on the external
pin. To determine if this device is driving the interrupt terminal, either perform a logical AND of the interrupt status
register B with the interrupt enable register B or check the state of the interrupt B bit in the interrupt B active register.
2.11.22 Interrupt Configuration Register B
Address
1Eh
7
6
5
4
3
2
1
0
Reserved
Interrupt polarity B
Interrupt polarity
0 = Interrupt B is active low.
1 = Interrupt B is active high. (default)
Must be same as interrupt polarity A bit at bit 0 of
interrupt configuration register A at address C2
The interrupt configuration register B is used to configure the polarity of interrupt B on the external interrupt terminal.
Note that when the interrupt B is configured for active low, the terminal is driven low when active and 3-state when
inactive (open-collector). Conversely, when the interrupt B is configured for active high, it is driven high for active and
driven low for inactive.
2.11.23 Lock Speed Select
Address
25h
7
6
5
4
3
2
1
0
Reserved
Lock speed
Lock speed:
0 = Fast lock disabled (default)
1 = Fast lock enabled
2.11.24 Crystal Frequency
Address
26h
7
6
5
4
3
2
1
0
Reserved
Crystal frequency
Crystal frequency:
0 = 14.31818 MHz (default)
1 = 27 MHz
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