參數(shù)資料
型號： XR16M780IL32-0B-EB
廠商： Exar Corporation
文件頁數(shù)： 18/58頁
文件大?。?/td> 0K
描述： EVAL BOARD FOR XR16M780-B 32QFN
標準包裝： 1
系列： *
XR16M780
25
REV. 1.0.0
1.62V TO 3.63V HIGH PERFORMANCE UART WITH 64-BYTE FIFO
3.0
UART INTERNAL REGISTERS
The complete register set for the M780 is shown in Table 6 and Table 7.
TABLE 6: UART INTERNAL REGISTERS
A2 A1 A0
ADDRESSES
REGISTER
READ/WRITE
COMMENTS
16C550 COMPATIBLE REGISTERS
0
0 0
DREV - Device Revision
Read-only
LCR[7] = 1, LCR
≠ 0xBF,
DLL = 0x00, DLM = 0x00
0
0 1
DVID - Device Identification Register
Read-only
0
0 0
DLL - Divisor LSB Register
Read/Write
LCR[7] = 1, LCR
≠ 0xBF
See DLD[7:6]
0
0 1
DLM - Divisor MSB Register
Read/Write
0
1 0
DLD - Divisor Fractional Register
Read/Write
LCR[7] = 1, LCR
≠ 0xBF,
EFR[4] = 1
0
0 0
RHR - Receive Holding Register
THR - Transmit Holding Register
Read-only
Write-only
LCR[7] = 0
0
0 1
IER - Interrupt Enable Register
Read/Write
0
1 0
ISR - Interrupt Status Register
FCR - FIFO Control Register
Read-only
Write-only
LCR[7] = 0 if EFR[4] = 1
or
LCR
≠ 0xBF if EFR[4] = 0
0
1 1
LCR - Line Control Register
Read/Write
1
0 0
MCR - Modem Control Register
Read/Write
LCR
≠ 0xBF
1
0 1
LSR - Line Status Register
Read-only
1
1 0
MSR - Modem Status Register
Read-only
1
1 0
MSR - Modem Status Register
Write-only
LCR
≠ 0xBF
EFR[4] = 1
1
1 1
SPR - Scratch Pad Register
Read/Write
LCR
≠ 0xBF, FCTR[6] = 0
1
1 1
EMSR - Enhanced Mode Select Register
Write-only
LCR
≠ 0xBF, FCTR[6] = 1
1
1 1
FC - RX/TX FIFO Level Counter Register
Read-only
ENHANCED REGISTERS
0
0 0
FC - RX/TX FIFO Level Counter Register
Read-only
LCR = 0xBF
0
0 0
TRIG - RX/TX FIFO Trigger Level Register
Write-only
0
0 1
FCTR - Feature Control Register
Read/Write
0
1 0
EFR - Enhanced Function Reg
Read/Write
1
0 0
Xon-1 - Xon Character 1
Read/Write
1
0 1
Xon-2 - Xon Character 2
Read/Write
1
1 0
Xoff-1 - Xoff Character 1
Read/Write
1
1 1
Xoff-2 - Xoff Character 2
Read/Write
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