參數(shù)資料
型號(hào): XR17C154IV
廠商: EXAR CORP
元件分類: 微控制器/微處理器
英文描述: Tools, Heatgun; Leaded Process Compatible:No; Peak Reflow Compatible (260 C):No RoHS Compliant: No
中文描述: 4 CHANNEL(S), 6.25M bps, SERIAL COMM CONTROLLER, PQFP144
封裝: 20 X 20 MM, 1.40 MM HEIGHT, TQFP-144
文件頁(yè)數(shù): 32/62頁(yè)
文件大小: 721K
代理商: XR17C154IV
XR17C154
5V PCI BUS QUAD UART
á
REV. 1.3.0
32
.
T
ABLE
11: UART CHANNEL CONFIGURATION REGISTERS
A
DDRESS
R
EGISTER
R
EAD
/W
RITE
C
OMMENTS
A3
A2
A1
A0
16550 C
OMPATIBLE
R
EGISTERS
0
0
0
0
RHR - Receive Holding Register
Read-only
LCR[7] = 0
0
0
0
0
THR - Transmit Holding Register
Write-only
LCR[7] = 0
0
0
0
0
DLL - Div Latch Low
Read/Write
LCR[7] = 1
0
0
0
1
DLM - Div Latch High
Read/Write
LCR[7] = 1
0
0
0
1
IER - Interrupt Enable Register
Read/Write
LCR[7] = 0
0
0
1
0
ISR - Interrupt Status Register
Read-only
0
0
1
0
FCR - FIFO Control Register
Write-only
0
0
1
1
LCR - Line Control Register
Read/Write
0
1
0
0
MCR - Modem Control Register
Read/Write
0
1
0
1
LSR - Line Status Register
Read-only
0
1
1
0
MSR - Modem Status Register
Read-only
0
1
1
0
RS485 Turn-Around Delay Register
Write-only
0
1
1
1
SPR - Scratch Pad Register
Read/Write
E
NHANCED
R
EGISTERS
1
0
0
0
FCTR - Feature Control Register
Read/Write
1
0
0
1
EFR - Enhanced Function Register
Read/Write
1
0
1
0
TXCNT - Transmit FIFO Level Counter
Read-only
1
0
1
0
TXTRG - Transmit FIFO Trigger Level
Write-only
1
0
1
1
RXCNT - Receive FIFO Level Counter
Read-only
1
0
1
1
RXTRG - Receive FIFO Trigger Level
Write-only
1
1
0
0
Xoff-1 - Xoff Character 1
Write-only
1
1
0
0
Xchar
Read-only
Xon,Xoff Rcvd. Flags
1
1
0
1
Xoff-2 - Xoff Character 2
Write-only
1
1
1
0
Xon-1 - Xon Character 1
Write-only
1
1
1
1
Xon-2 - Xon Character 2
Write-only
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