参数资料
型号: ST16C1551
厂商: Exar Corporation
英文描述: UART with 16-Byte FIFO(通用异步接收器/发送器(带16字节的先进先出))
中文描述: 的UART具有16字节FIFO(通用异步接收器/发送器(带16字节的先进先出))
文件页数: 22/32页
文件大小: 418K
代理商: ST16C1551
ST16C1550/51
22
Rev. 3.10
the -RI input. Reading this bit in the loopback mode
produces the state of MCR bit-2 for packages support-
ing the RST (soft reset) feature. The RST function is
associated with the 28 pin ST16C1551 and the 48 pin
ST16C1550/51 package only.
MSR BIT-7:
During normal operation, this bit is the compliment of
the -CD input. Reading this bit in the loopback mode
produces the state of MCR bit-3 (INT - Interrupt).
Note: Whenever any MSR bit(s) 0-3: are set to logic
1, a MODEM Status Interrupt will be generated.
Scratchpad Register (SPR)
The ST16C155X provides a temporary data register to
store 8 bits of user information.
ST16C1550/51 EXTERNAL RESET CONDITIONS
REGISTERS
RESET STATE
IER
FCR
ISR
LCR
MCR
LSR
IER BITS 0-7=0
FCR BITS 0-7=0
ISR BIT-0=1, ISR BITS 1-7=0
LCR BITS 0-7=0
MCR BITS 0-7=0
LSR BITS 0-4=0,
LSR BITS 5-6=1 LSR, BIT 7=0
MSR BITS 0-3=0,
MSR BITS 4-7=input signals
MSR
SIGNALS
RESET STATE
TX
SOFT reset
-RTS
-DTR
INT
High
High
High
High
Three state
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