參數(shù)資料
型號(hào): ST16C2450CQ48
廠商: EXAR CORP
元件分類: 微控制器/微處理器
英文描述: 2.97V TO 5.5V DUART
中文描述: 2 CHANNEL(S), 1.5M bps, SERIAL COMM CONTROLLER, PQFP48
封裝: 7 X 7 MM, 1 MM HEIGHT, TQFP-48
文件頁數(shù): 12/29頁
文件大?。?/td> 315K
代理商: ST16C2450CQ48
ST16C2450
2.97V TO 5.5V DUART
á
REV. 4.0.0
12
3.0
UART INTERNAL REGISTERS
Each of the UART channel in the 2450 has its own set of configuration registers selected by address lines A0,
A1 and A2 with CSA# or CSB# selecting the channel. The registers are 16C450 compatible. The complete
register set is shown on
Table 4
and
Table 5
.
T
ABLE
4: UART CHANNEL A AND B UART INTERNAL REGISTERS
A2,A1,A0 A
DDRESSES
R
EGISTER
R
EAD
/W
RITE
C
OMMENTS
16C550 C
OMPATIBLE
R
EGISTERS
0 0 0
RHR - Receive Holding Register
THR - Transmit Holding Register
Read-only
Write-only
LCR[7] = 0
0 0 0
DLL - Div Latch Low Byte
Read/Write
LCR[7] = 1
0 0 1
DLM - Div Latch High Byte
Read/Write
LCR[7] = 1
0 0 1
IER - Interrupt Enable Register
Read/Write
LCR[7] = 0
0 1 0
ISR - Interrupt Status Register
Reserved
Read-only
Write-only
0 1 1
LCR - Line Control Register
Read/Write
1 0 0
MCR - Modem Control Register
Read/Write
1 0 1
LSR - Line Status Register
Reserved
Read-only
Write-only
1 1 0
MSR - Modem Status Register
Reserved
Read-only
Write-only
1 1 1
SPR - Scratch Pad Register
Read/Write
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