sx1508bevk Semtech Corporation, sx1508bevk Datasheet - Page 32

• Manufacturer Part Number: sx1508bevk
• Manufacturer: Semtech Corporation

Addr
0x0A
0x0B
0x0C
0x0D
0x0E
0x0F
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x10
0x11
0x12
0x13
0x14
0x15
0x16
0x17
ADVANCED COMMUNICATIONS & SENSING
Rev 3 – 9
Name
RegInputDisableB
RegInputDisableA
RegLongSlewB
RegLongSlewA
RegLowDriveB
RegLowDriveA
RegPullUpB
RegPullUpA
RegPullDownB
RegPullDownA
RegOpenDrainB
RegOpenDrainA
RegPolarityB
RegPolarityA
RegDirB
RegDirA
RegDataB
RegDataA
RegInterruptMaskB
RegInterruptMaskA
RegSenseHighB
RegSenseLowB
RegSenseHighA
RegSenseLowA
th
Sept. 2010
Default
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
Bits
7:0
7:0
7:0
7:0
7:0
7:0
7:0
7:0
7:0
7:0
7:0
7:0
7:0
7:0
7:0
7:0
7:0
7:0
7:0
7:0
7:6
5:4
3:2
1:0
7:6
5:4
3:2
1:0
7:6
5:4
3:2
1:0
7:6
Description
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)
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)
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
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
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.
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.
Enables the pull-up for each IO
0 : Pull-up is disabled
1 : Pull-up is enabled
Enables the pull-up for each IO
0 : Pull-up is disabled
1 : Pull-up is enabled
Enables the pull-down for each IO
0 : Pull-down is disabled
1 : Pull-down is enabled
Enables the pull-down for each IO
0 : Pull-down is disabled
1 : Pull-down is enabled
Enables open drain operation for each [output-configured] IO
0 : Regular push-pull operation
1 : Open drain operation
Enables open drain operation for each [output-configured] IO
0 : Regular push-pull operation
1 : Open drain operation
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)
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)
Configures direction for each IO.
0 : IO is configured as an output
1 : IO is configured as an input
Configures direction for each IO.
0 : IO is configured as an output
1 : IO is configured as an input
Write: Data to be output to the output-configured IOs
Read: Data seen at the IOs, independent of the direction configured.
Write: Data to be output to the output-configured IOs
Read: Data seen at the IOs, independent of the direction configured.
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
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
Edge sensitivity of RegData[15]
Edge sensitivity of RegData[14]
Edge sensitivity of RegData[13]
Edge sensitivity of RegData[12]
Edge sensitivity of RegData[11]
Edge sensitivity of RegData[10]
Edge sensitivity of RegData[9]
Edge sensitivity of RegData[8]
Edge sensitivity of RegData[7]
Edge sensitivity of RegData[6]
Edge sensitivity of RegData[5]
Edge sensitivity of RegData[4]
Edge sensitivity of RegData[3]
32
World’s Lowest Voltage Level Shifting GPIO
SX1507B/SX1508B/SX1509B
with LED Driver and Keypad Engine
00 : None
01 : Rising
10 : Falling
11 : Both
00 : None
01 : Rising
10 : Falling
11 : Both
00 : None
01 : Rising
10 : Falling
11 : Both
00 : None
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