TABLE 13: UART R" />
參數(shù)資料
型號: XR16M554IV80-F
廠商: Exar Corporation
文件頁數(shù): 22/46頁
文件大?。?/td> 0K
描述: IC UART FIFO 16B QUAD 80LQFP
標準包裝: 119
特點: *
通道數(shù): 4,QUART
FIFO's: 16 字節(jié)
規(guī)程: RS232
電源電壓: 1.62 V ~ 3.63 V
帶自動流量控制功能:
帶故障啟動位檢測功能:
帶調(diào)制解調(diào)器控制功能:
帶CMOS:
安裝類型: 表面貼裝
封裝/外殼: 80-LQFP
供應商設(shè)備封裝: 80-LQFP(12x12)
包裝: 托盤
XR16M554/554D
29
REV. 1.0.0
1.62V TO 3.63V QUAD UART WITH 16-BYTE FIFO
TABLE 13: UART RESET CONDITIONS FOR CHANNELS A-D
REGISTERS
RESET STATE
DLM, DLL
DLM = 0x00 and DLL = 0x01. Only resets to these val-
ues during a power up. They do not reset when the
Reset Pin is asserted.
RHR
Bits 7-0 = 0xXX
THR
Bits 7-0 = 0xXX
IER
Bits 7-0 = 0x00
FCR
Bits 7-0 = 0x00
ISR
Bits 7-0 = 0x01
LCR
Bits 7-0 = 0x00
MCR
Bits 7-0 = 0x00
LSR
Bits 7-0 = 0x60
MSR
Bits 3-0 = Logic 0
Bits 7-4 = Logic levels of the inputs inverted
SPR
Bits 7-0 = 0xFF
I/O SIGNALS
RESET STATE
TX
HIGH
RTS#
HIGH
DTR#
HIGH
RXRDY#
HIGH
TXRDY#
LOW
INT
(16 Mode)
XR16M554 = Three-State Condition (INTSEL = LOW)
XR16M554 = LOW (INTSEL = HIGH)
XR16M554D = LOW
IRQ#
(68 Mode)
HIGH (INTSEL = LOW)
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