参数资料
型号: XR16V554IVTR-F
厂商: Exar Corporation
文件页数: 11/43页
文件大小: 0K
描述: IC UART FIFO 16B QUAD 64LQFP
标准包装: 1,000
特点: *
通道数: 4,QUART
FIFO's: 16 字节
规程: RS232
电源电压: 2.25 V ~ 3.6 V
带自动流量控制功能:
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: 64-LQFP
供应商设备封装: 64-LQFP(10x10)
包装: 带卷 (TR)
XR16V554/554D
19
REV. 1.0.3
2.25V TO 3.6V QUAD UART WITH 16-BYTE FIFO
3.0 UART INTERNAL REGISTERS
Each UART channel in the V554 has its own set of configuration registers selected by address lines A0, A1
and A2 with a specific channel selected (See Table 1 and Table 2). The complete register set is shown on
TABLE 7: UART INTERNAL REGISTERS
A2,A1,A0 ADDRESSES
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 LSB
Read/Write
LCR[7] = 1, LCR
≠ 0xBF
0 0 1
DLM - Divisor MSB
Read/Write
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
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
1 1 0
MSR - Modem Status Register
Read-only
1 1 1
SPR - Scratch Pad Register
Read/Write
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