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參數(shù)資料
型號: XR20M1172L32-0A-EB
廠商: Exar Corporation
文件頁數(shù): 18/55頁
文件大小: 0K
描述: EVAL BOARD FOR XR20M1172 32QFN
標(biāo)準(zhǔn)包裝: 1
主要目的: 接口,UART
嵌入式:
已用 IC / 零件: XR20M1172
主要屬性: 2 通道
次要屬性: I²C & SPI 接口
已供物品:
其它名稱: 1016-1624
XR20M1172L32-0A-EB-ND
XR20M1172
25
REV. 1.2.0
TWO CHANNEL I2C/SPI UART WITH 64-BYTE FIFO
3.0
UART INTERNAL REGISTERS
The complete register set is shown below in Table 7 and Table 8.
TABLE 7: UART INTERNAL REGISTER ADDRESSES
ADDRESS
REGISTER
READ/WRITE
COMMENTS
16C550 COMPATIBLE REGISTERS
0X00
RHR - Receive Holding Register
THR - Transmit Holding Register
Read-only
Write-only
LCR[7] = 0
0X00
DLL - Divisor LSB
Read/Write
LCR[7] = 1, LCR
≠ 0xBF
0X01
DLM - Divisor MSB
Read/Write
0X02
DLD - Divisor Fractional
Read/Write
LCR[7] = 1, LCR
≠ 0xBF,
EFR[4] = 1
0X01
IER - Interrupt Enable Register
Read/Write
LCR[7] = 0
0X02
ISR - Interrupt Status Register
FCR - FIFO Control Register
Read-only
Write-only
0X03
LCR - Line Control Register
Read/Write
0X04
MCR - Modem Control Register
Read/Write
LCR
≠ 0xBF
0X05
LSR - Line Status Register
Read-only
0X06
MSR - Modem Status Register
Read-only
See
Table 12
0X07
SPR - Scratch Pad Register
Read/Write
See
Table 13
0X06
TCR - Transmission Control Register
Read/Write
See
Table 12
0X07
TLR - Trigger Level Register
Read/Write
See
Table 13
0X08
TXLVL - Transmit FIFO Level
Read-only
LCR[7] = 0
0x09
RXLVL - Receive FIFO Level
Read-only
0x0A
IODir - GPIO Direction Control Register
Read/Write
0x0B
IOState - GPIO State Register
Read/Write
0x0C
IOIntEna - GPIO Interrupt Enable Register
Read/Write
0x0D
Reserved
-
0x0E
IOControl - GPIO Control Register
Read/Write
0x0F
EFCR - Extra Features Control Register
Read/Write
0x02
EFR - Enhanced Function Register
Read/Write
LCR = 0xBF
0x04
Xon-1 - Xon Character 1
Read/Write
0x05
Xon-2 - Xon Character 2
Read/Write
0x06
Xoff-1 - Xoff Character 1
Read/Write
0x07
Xoff-2 - Xoff Character 2
Read/Write
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