Datasheet

VIO
10kW
Tothe outputsforINT
additionalSRC4392 devices
Interrupt
Logic
SRC4392 MCU,DSP,
orLogic
INT
23
Interrupt
Input
S A A A A A P
Byte1
Slav Ade dress
wit Rh /W=0
Byte2
Reg tis erAddressByte
wit Ih NC=1
Byte3
SlaveAddress
withR/W=1
Byte4
Reg tis erData
ByteN
Reg tis erData
ForAddress+N
(c)RandomReadOp mentEnablederation,Auto-Incre
S=STARTC dion tion
A=Ackn w dgo le e
A =NotAckno ledgew
R=Repeated TARTS
P=STOPCondii nt o
Transferfrom steMa r to Slave
Transferfrom avetoSl Master
L gende
R
S A A P
Byte1
SlaveAddre ss
withR/W=1
Byte2
Reg tis erAddressByte
withINC=0
(a Cu) rrentAd res heRegister ddr ss fthe vio sd A e Pre us Read,Assumest o
S A A
A P
Byte1
Slav Ade dress
withR/W=0
Byte2
Reg tis erAddressByte
withINC=0
Byte3
Slav Ade dress
withR/W=1
(b)RandomReadOp me tDisablederation,Auto-Incre n
R
A
Byte4
RegisterData
SRC4392
www.ti.com SBFS029D –DECEMBER 2005–REVISED DECEMBER 2012
Figure 78. Fast/Standard Mode Read Operations
INTERRUPT OUTPUT
The SRC4392 includes multiple internal status bits, many of which may be set to trigger an interrupt signal. The
interrupt signal is output at INT (pin 23), which is an active low, open-drain output. The INT pin requires a pull-up
resistor to the VIO supply rail. The value of the pull-up is not critical, but a 10kΩ device should be sufficient for
most applications. Figure 79 shows the interrupt output pin connection. The open-drain output allows interrupt
pins from multiple SRC4392 devices to be connected in a wired OR configuration.
Figure 79. Interrupt Output Pin Connections
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