SI3012-KS Silicon Laboratories Inc, SI3012-KS Datasheet - Page 45

• Manufacturer Part Number: SI3012-KS
• Description: IC ISOMODEM SYSTEM-SIDE 16SOIC
• Manufacturer: Silicon Laboratories Inc

Specifications of SI3012-KS

• Data Format: V.90
• Interface: Serial
• Voltage - Supply: 3.3 V ~ 5 V
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Baud Rates: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant

Register 54h GPIO Pin Status
Reset settings = 0xxxxx
GPIO Status is a read/write register that reflects the state of all GPIO pins (inputs and outputs) on slot 12. The
value of all GPIO pin inputs and outputs comes from each frame on slot 12, but is also available for reading as
GPIO Pin Status via the standard slot 1 and 2 command address/data protocols. GPIO inputs configured as Sticky
are cleared by writing a 0 to the corresponding bit of this register. (This should be the last event before setting the
AC’97 MLNK bit.)
Bits corresponding to unimplemented GPIO pins should be forced to zero in this register and input slot 12.
GPIO bits that have been programmed as Inputs and Sticky, upon transition (high-to-low or low-to-high), will cause
the individual GI bit to go asserted 1, and remain asserted until a write of 0 to that bit. The only way to set the
desired value of a GPIO output pin is to set the control bit in output slot 12.
If configured as an input, the default value after register reset is always the state of the GPIO pin.
D15
GI15
GI14
D14
GI13
D13
GI12
D12
GI11
D11
GI10
D10
D9
D8
Rev. 2.01
D7
D6
GI5
D5
GI4
D4
GI3
D3
GI2
D2
Si3038
GI1
D1
GI0
D0
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