參數(shù)資料
型號(hào): XR16M554IJ-0B-EVB
廠商: Exar Corporation
文件頁(yè)數(shù): 11/46頁(yè)
文件大?。?/td> 0K
描述: EVAL BOARD FOR XR16M554-B 68PLCC
標(biāo)準(zhǔn)包裝: 1
系列: *
XR16M554/554D
19
REV. 1.0.0
1.62V TO 3.63V QUAD UART WITH 16-BYTE FIFO
3.0
UART INTERNAL REGISTERS
Each UART channel in the M554 has its own set of configuration registers selected by address lines A0, A1
and A2 with a specific channel selected (See Table 1 and Table 2). The complete register set is shown on
TABLE 7: UART CHANNEL A AND B UART INTERNAL REGISTERS
A2,A1,A0 ADDRESSES
REGISTER
READ/WRITE
COMMENTS
16C550 COMPATIBLE REGISTERS
0 0 0
RHR - Receive Holding Register
THR - Transmit Holding Register
Read-only
Write-only
LCR[7] = 0
0 0 0
DLL - Divisor LSB
Read/Write
LCR[7] = 1, LCR
≠ 0xBF
0 0 1
DLM - Divisor MSB
Read/Write
0 0 1
IER - Interrupt Enable Register
Read/Write
LCR[7] = 0
0 1 0
ISR - Interrupt Status Register
FCR - FIFO Control Register
Read-only
Write-only
0 1 1
LCR - Line Control Register
Read/Write
1 0 0
MCR - Modem Control Register
Read/Write
LCR[7] = 0
1 0 1
LSR - Line Status Register
Read-only
1 1 0
MSR - Modem Status Register
Read-only
1 1 1
SPR - Scratch Pad Register
Read/Write
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