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SX1512BIULTRT Datasheet(PDF) 33 Page - Semtech Corporation

Part No. SX1512BIULTRT
Description  World’s Lowest Voltage Level Shifting GPIO with LED Driver and Keypad Engine
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Maker  SEMTECH [Semtech Corporation]
Homepage  http://www.semtech.com
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SX1512BIULTRT Datasheet(HTML) 33 Page - Semtech Corporation

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ADVANCED COMMUNICATIONS & SENSING
Rev 3 – 9
th Sept. 2010
33
www.semtech.com
SX1510B/SX1511B/SX1512B
World’s Lowest Voltage Level Shifting GPIO
with LED Driver and Keypad Engine
Addr
Name
Default
Bits
Description
0x00
RegInputDisableB
0x00
7:0
Disables the input buffer of each IO
0 : Input buffer is enabled (input actually being used)
1 : Input buffer is disabled (input actually not being used or LED connection)
0x01
RegInputDisableA
0x00
7:0
Disables the input buffer of each IO
0 : Input buffer is enabled (input actually being used)
1 : Input buffer is disabled (input actually not being used, LED connection)
0x02
RegLongSlewB
0x00
7:0
Enables increased slew rate of the output buffer of each [output-configured] IO
0 : Increased slew rate is disabled
1 : Increased slew rate is enabled
0x03
RegLongSlewA
0x00
7:0
Enables increased slew rate of the output buffer of each [output-configured] IO
0 : Increased slew rate is disabled
1 : Increased slew rate is enabled
0x04
RegLowDriveB
0x00
7:0
Enables reduced drive of the output buffer of each [output-configured] IO
0 : Reduced drive is disabled
1 : Reduced drive is enabled, IOL specifications are divided by 2.
0x05
RegLowDriveA
0x00
7:0
Enables reduced drive of the output buffer of each [output-configured] IO
0 : Reduced drive is disabled
1 : Reduced drive is enabled, IOL specifications are divided by 2.
0x06
RegPullUpB
0x00
7:0
Enables the pull-up for each IO
0 : Pull-up is disabled
1 : Pull-up is enabled
0x07
RegPullUpA
0x00
7:0
Enables the pull-up for each IO
0 : Pull-up is disabled
1 : Pull-up is enabled
0x08
RegPullDownB
0x00
7:0
Enables the pull-down for each IO
0 : Pull-down is disabled
1 : Pull-down is enabled
0x09
RegPullDownA
0x00
7:0
Enables the pull-down for each IO
0 : Pull-down is disabled
1 : Pull-down is enabled
0x0A
RegOpenDrainB
0x00
7:0
Enables open drain operation for each [output-configured] IO
0 : Regular push-pull operation
1 : Open drain operation
0x0B
RegOpenDrainA
0x00
7:0
Enables open drain operation for each [output-configured] IO
0 : Regular push-pull operation
1 : Open drain operation
0x0C
RegPolarityB
0x00
7:0
Enables polarity inversion for each IO
0 : Normal polarity : RegData[x] = IO[x]
1 : Inverted polarity : RegData[x] = !IO[x] (for both input and output configured IOs)
0x0D
RegPolarityA
0x00
7:0
Enables polarity inversion for each IO
0 : Normal polarity : RegData[x] = IO[x]
1 : Inverted polarity : RegData[x] = !IO[x] (for both input and output configured IOs)
0x0E
RegDirB
0xFF
7:0
Configures direction for each IO.
0 : IO is configured as an output
1 : IO is configured as an input
0x0F
RegDirA
0xFF
7:0
Configures direction for each IO.
0 : IO is configured as an output
1 : IO is configured as an input
0x10
RegDataB
0xFF
7:0
Write: Data to be output to the output-configured IOs
Read: Data seen at the IOs, independent of the direction configured.
0x11
RegDataA
0xFF
7:0
Write: Data to be output to the output-configured IOs
Read: Data seen at the IOs, independent of the direction configured.
0x12
RegInterruptMaskB
0xFF
7:0
Configures which [input-configured] IO will trigger an interrupt on NINT pin
0 : An event on this IO will trigger an interrupt
1 : An event on this IO will NOT trigger an interrupt
0x13
RegInterruptMaskA
0xFF
7:0
Configures which [input-configured] IO will trigger an interrupt on NINT pin
0 : An event on this IO will trigger an interrupt
1 : An event on this IO will NOT trigger an interrupt
7:6
Edge sensitivity of RegData[15]
5:4
Edge sensitivity of RegData[14]
3:2
Edge sensitivity of RegData[13]
0x14
RegSenseHighB
0x00
1:0
Edge sensitivity of RegData[12]
00 : None
01 : Rising
10 : Falling
11 : Both
7:6
Edge sensitivity of RegData[11]
5:4
Edge sensitivity of RegData[10]
3:2
Edge sensitivity of RegData[9]
0x15
RegSenseLowB
0x00
1:0
Edge sensitivity of RegData[8]
00 : None
01 : Rising
10 : Falling
11 : Both
7:6
Edge sensitivity of RegData[7]
5:4
Edge sensitivity of RegData[6]
3:2
Edge sensitivity of RegData[5]
0x16
RegSenseHighA
0x00
1:0
Edge sensitivity of RegData[4]
00 : None
01 : Rising
10 : Falling
11 : Both
7:6
Edge sensitivity of RegData[3]
0x17
RegSenseLowA
0x00
5:4
Edge sensitivity of RegData[2]
00 : None
01 : Rising
10 : Falling


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