參數(shù)資料
型號: XR19L200IL32-0B-EB
廠商: Exar Corporation
文件頁數(shù): 7/40頁
文件大?。?/td> 0K
描述: EVAL BOARD FOR XR19L200 32QFN
標準包裝: 1
系列: *
XR19L200
15
REV. 1.0.2
SINGLE CHANNEL INTEGRATED UART AND RS-232 TRANSCEIVER
3.0
UART INTERNAL REGISTERS
The L200 has a set of configuration registers selected by address lines A0, A1 and A2 with CS# asserted. The
complete register set is shown on Table 5 and Table 6.
TABLE 5: UART INTERNAL REGISTERS
ADDRESSES
A2 A1 A0
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 Latch Low Byte
Read/Write
LCR[7] = 1
0
0 1
DLM - Divisor Latch High Byte
Read/Write
0
0 0
DREV - Device Revision Code
Read-only
DLL = 0x00, DLM = 0x00
and LCR[7] = 1
0
0 1
DVID - Device Identification Code
Read-only
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
LCR
≠ 0xBF
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 1
SPR - Scratchpad Register
Read/Write
LCR
≠ 0xBF
ENHANCED REGISTERS
0
1 0
EFR - Enhanced Function Register
Read/Write
LCR = 0xBF
1
0 0
Xon-1 - Xon Character 1
Write
1
0 1
Xon-2 - Xon Character 2
Write
1
1 0
Xoff-1 - Xoff Character 1
Write
1
1 1
Xoff-2 - Xoff Character 2
Write
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