REV. 1.0.0 8-BIT SPI GPIO EXPANDER WITH INTEGRATED LEVEL SHIFTERS 1.1.1 SPI Command Byte An SPI command byte is sent by the SPI maste" />
參數(shù)資料
型號(hào)： XRA1404IL16-0B-EB
廠商： Exar Corporation
文件頁(yè)數(shù)： 10/14頁(yè)
文件大?。?/td> 0K
描述： GPIO EXPANDER EVAL BOARD
設(shè)計(jì)資源： XRA140x Eval Board (8-Bit) Schematics
標(biāo)準(zhǔn)包裝： 1
主要目的： 接口，GPIO 擴(kuò)展器
嵌入式： 否
已用 IC / 零件： XRA1404IL16
已供物品： 板
其它名稱： 1016-1739
XRA1404IL16-OB-EB
XRA1404
5
REV. 1.0.0
8-BIT SPI GPIO EXPANDER WITH INTEGRATED LEVEL SHIFTERS
1.1.1
SPI Command Byte
An SPI command byte is sent by the SPI master following the slave address. The command byte indicates the
address offset of the register that will be accessed. Table 2 below lists the command bytes for each register.
TABLE 2: COMMAND BYTE (REGISTER ADDRESS)
COMMAND BYTE
REGISTER NAME DESCRIPTION
READ/WRITE
DEFAULT VALUES
0x00
GSR - GPIO State
Read-Only
0xXX
0x01
OCR - Output Control
Read/Write
0xFF
0x02
PIR - Input Polarity Inversion
Read/Write
0x00
0x03
GCR - GPIO Configuration
Read/Write
0xFF
0x04
PUR - Input Internal Pull-up Resistor Enable/Disable
Read/Write
0x00
0x05
IER - Input Interrupt Enable
Read/Write
0x00
0x06
TSCR - Output Three-State Control
Read/Write
0x00
0x07
ISR - Input Interrupt Status
Read
0x00
0x08
REIR - Input Rising Edge Interrupt Enable
Read/Write
0x00
0x09
FEIR - Input Falling Edge Interrupt Enable
Read/Write
0x00
0x0A
IFR - Input Filter Enable/Disable
Read/Write
0xFF
1.2
Interrupts
The table below summarizes the interrupt behavior of the different register settings for the XRA1404.
TABLE 3: INTERRUPT GENERATION AND CLEARING
BIT
INTERRUPT GENERATED BY:
INTERRUPT CLEARED BY:
1
0
X
No interrupts enabled (default)
N/A
1
0
A rising or falling edge on the input
Reading the GSR register or if the input
changes back to its previous state (state of
input during last read to GSR)
1
A rising or falling edge on the input and
remains in the new state for more than
1075ns
1
0
A rising edge on the input
Reading the GSR register
1
A rising edge on the input and remains high
for more than 1075ns
1
0
1
0
A falling edge on the input
Reading the GSR register
1
A falling edge on the input and remains low
for more than 1075ns
1
0
A rising or falling edge on the input
Reading the GSR register
1
A rising or falling edge on the input and
remains in the new state for more than
1075ns
0
x
No interrupts in output mode
N/A
GCR IER REIR FEIR IFR
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參數(shù)描述
XRA1404IL16-F 功能描述:接口-I/O擴(kuò)展器 8 Bit SPI GPIO Expander RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
XRA1404IL16MTR-F 制造商:Exar Corporation 功能描述:XRA1404IL16MTR-F
XRA1404IL16TR-F 功能描述:接口-I/O擴(kuò)展器 8 Bit SPI GPIO Expander RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
XRA1405IG24-0B-EB 功能描述:其他開(kāi)發(fā)工具 16 Bit SPI Eval GPIO Expander RoHS:否 制造商:Parallax 產(chǎn)品:ELEV-8 Hex Upgrade Kits 類型:Robotics 工具用于評(píng)估:ELEV-8 Quadcopter 工作電源電壓:
XRA1405IG24-F 功能描述:接口-I/O擴(kuò)展器 16 Bit SPI GPIO Expander RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
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