參數(shù)資料
型號(hào)： ST16C650ACQ48
廠商： EXAR CORP
元件分類： 微控制器/微處理器
英文描述： 2.90V TO 5.5V UART WITH 32-BYTE FIFO
中文描述： 1 CHANNEL(S), 3.125M bps, SERIAL COMM CONTROLLER, PQFP48
封裝： 7 X 7 MM, 1 MM HEIGHT, TQFP-48
文件頁數(shù)： 23/53頁
文件大小： 666K
代理商： ST16C650ACQ48
á
REV. 5.0.0
ST16C650A
2.90V TO 5.5V UART WITH 32-BYTE FIFO
23
3.0
UART CONFIGURATION REGISTERS
The 650A has a set of configuration registers selected by address lines A0 to A2. The based page registers are
16C550 compatible with EXAR enhanced feature registers located on the second page (mirror) addresses.
The second page registers are only accessible by setting LCR register to a value of 0xBF. The register set is
shown on
Table 7
and
Table 8
.
.
T
ABLE
7: ST16C650A UART CONFIGURATION REGISTERS
A
DDRESS
R
EGISTER
R
EAD
/W
RITE
C
OMMENTS
A2 A1 A0
16550 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 - Divisor Latch Low
Read/Write
LCR[7] = 1, LCR
≠
0xBF
0 0 1
DLM - Divisor Latch High
Read/Write
LCR[7] = 1, LCR
≠
0xBF
0 0 0
DREV - Device Revision Code
Read-only
LCR[7] = 1, LCR
≠
0xBF,
DLL, DLM = 0x00
0 0 1
DVID - Device Identification Code
Read-only
LCR[7] = 1, LCR
≠
0xBF,
DLL, DLM = 0x00
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[7] = 0
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
LCR[7] = 0
XFR - Extra Feature Register
Write-only
LCR[7] = 0, EFR[4] = 1
1 1 0
MSR - Modem Status Register
Read-only
LCR[7] = 0
IRPW - Infrared Pulse Width Register
Write-only
LCR[7] = 0, EFR[4] = 1
1 1 1
SPR - Scratch Pad Register
Read/Write
LCR[7] = 0
E
NHANCED
R
EGISTERS
0 1 0
EFR - Enhanced Function Register
Read/Write
LCR = 0xBF
1 0 0
Xon-1 - Xon Character 1
Read/Write
LCR = 0xBF
1 0 1
Xon-2 - Xon Character 2
Read/Write
LCR = 0xBF
1 1 0
Xoff-1 - Xoff Character 1
Read/Write
LCR = 0xBF
1 1 1
Xoff-2 - Xoff Character 2
Read/Write
LCR = 0xBF
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ST16C650ACQ48TR-F 制造商:Exar Corporation 功能描述:UART 1-CH 32Byte FIFO 3.3V/5V 48-Pin TQFP T/R 制造商:Exar Corporation 功能描述:ST16C650ACQ48TR-F
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