REV. 5.0.2 22 3.0 UART INTERNAL REGISTERS Each UART channel in the 654 has its own s" />
參數(shù)資料
型號(hào): ST16C654CJ68-F
廠商: Exar Corporation
文件頁(yè)數(shù): 15/51頁(yè)
文件大小: 0K
描述: IC UART FIFO 64B QUAD 68PLCC
標(biāo)準(zhǔn)包裝: 19
特點(diǎn): *
通道數(shù): 4,QUART
FIFO's: 64 字節(jié)
規(guī)程: RS232
電源電壓: 2.97 V ~ 5.5 V
帶自動(dòng)流量控制功能:
帶IrDA 編碼器/解碼器:
帶故障啟動(dòng)位檢測(cè)功能:
帶調(diào)制解調(diào)器控制功能:
帶CMOS:
安裝類(lèi)型: 表面貼裝
封裝/外殼: 68-LCC(J 形引線)
供應(yīng)商設(shè)備封裝: 68-PLCC
包裝: 管件
其它名稱(chēng): 1016-1269-5
ST16C654/654D
xr
2.97V TO 5.5V QUAD UART WITH 64-BYTE FIFO
REV. 5.0.2
22
3.0 UART INTERNAL REGISTERS
Each UART channel in the 654 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 9
.
TABLE 9: UART CHANNEL A AND B 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 - Div Latch Low Byte
Read/Write
LCR[7] = 1, LCR
≠ 0xBF
0 0 1
DLM - Div Latch High Byte
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
Reserved
Read-only
Write-only
1 1 0
MSR - Modem Status Register
Reserved
Read-only
Write-only
1 1 1
SPR - Scratch Pad Register
Read/Write
ENHANCED REGISTERS
0 1 0
EFR - Enhanced Function Reg
Read/Write
LCR = 0xBF
1 0 0
Xon-1 - Xon Character 1
Read/Write
1 0 1
Xon-2 - Xon Character 2
Read/Write
1 1 0
Xoff-1 - Xoff Character 1
Read/Write
1 1 1
Xoff-2 - Xoff Character 2
Read/Write
X X X
FSTAT - FIFO Status Register
Read-only
FSRS# pin is logic 0
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