参数资料
型号: ST16C650ACJ44TR-F
厂商: Exar Corporation
文件页数: 15/50页
文件大小: 0K
描述: IC UART FIFO 32B 44PLCC
标准包装: 500
特点: *
通道数: 1,UART
FIFO's: 32 字节
规程: 打印机,RS232,RS422,RS485
电源电压: 2.9 V ~ 5.5 V
带并行端口:
带IrDA 编码器/解码器:
带故障启动位检测功能:
带调制解调器控制功能:
带CMOS:
安装类型: 表面贴装
封装/外壳: 44-LCC(J 形引线)
供应商设备封装: 44-PLCC(16.59x16.59)
包装: 带卷 (TR)
ST16C650A
22
2.90V TO 5.5V UART WITH 32-BYTE FIFO
REV. 5.0.3
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.
TABLE 7: ST16C650A UART CONFIGURATION REGISTERS
ADDRESS
REGISTER
READ/WRITE
COMMENTS
A2 A1 A0
16550 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
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
ENHANCED REGISTERS
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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