- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98143 > ST16C654IQ64/TR (EXAR CORP) 4 CHANNEL(S), 1.5M bps, SERIAL COMM CONTROLLER, PQFP64 PDF資料下載
參數(shù)資料
| 型號： | ST16C654IQ64/TR |
| 廠商： | EXAR CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4 CHANNEL(S), 1.5M bps, SERIAL COMM CONTROLLER, PQFP64 |
| 封裝： | 10 X 10 MM, 1.40 MM HEIGHT, LQFP-64 |
| 文件頁數(shù)： | 6/54頁 |
| 文件大?。?/td> | 734K |
| 代理商： | ST16C654IQ64/TR |
第1頁第2頁第3頁第4頁第5頁當前第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁
xr
ST16C654/654D
REV. 5.0.2
2.97V TO 5.5V QUAD UART WITH 64-BYTE FIFO
11
2.4
Channels A-D Internal Registers
Each UART channel in the 654 has a set of enhanced registers for control, monitoring and data loading and
unloading. The configuration register set is compatible to those already available in the standard single
16C550. These registers function as data holding registers (THR/RHR), interrupt status and control registers
(ISR/IER), a FIFO control register (FCR), receive line status and control registers (LSR/LCR), modem status
and control registers (MSR/MCR), programmable data rate (clock) divisor registers (DLL/DLM), and a user
accessible scratchpad register (SPR).
Beyond the general 16C550 features and capabilities, the 654 offers enhanced feature registers (EFR, Xon/
Xoff 1, Xon/Xoff 2, FSTAT) that provide automatic RTS and CTS hardware flow control and automatic Xon/Xoff
software flow control. All the register functions are discussed in full detail later in “Section 3.0, UART
2.5
INT Ouputs for Channels A-D
The interrupt outputs change according to the operating mode and enhanced features setup. Table 3 and 4
2.6
DMA Mode
The device does not support direct memory access. The DMA Mode (a legacy term) in this document does not
mean “direct memory access” but refers to data block transfer operation. The DMA mode affects the state of
the RXRDY# A-D and TXRDY# A-D output pins. The transmit and receive FIFO trigger levels provide
additional flexibility to the user for block mode operation. The LSR bits 5-6 provide an indication when the
transmitter is empty or has an empty location(s) for more data. The user can optionally operate the transmit
and receive FIFO in the DMA mode (FCR bit-3=1). When the transmit and receive FIFOs are enabled and the
DMA mode is disabled (FCR bit-3 = 0), the 654 is placed in single-character mode for data transmit or receive
operation. When DMA mode is enabled (FCR bit-3 = 1), the user takes advantage of block mode operation by
loading or unloading the FIFO in a block sequence determined by the programmed trigger level. The following
table show their behavior. Also see Figure 20 through 25.
TABLE 3: INT PINS OPERATION FOR TRANSMITTER FOR CHANNELS A-D
FCR BIT-0 = 0
(FIFO DISABLED)
FCR BIT-0 = 1 (FIFO ENABLED)
FCR Bit-3 = 0
(DMA Mode Disabled)
FCR Bit-3 = 1
(DMA Mode Enabled)
INT Pin
0 = a byte in THR
1 = THR empty
0 = FIFO above trigger level
1 = FIFO below trigger level or FIFO
empty
0 = FIFO above trigger level
1 = FIFO below trigger level or FIFO
empty
TABLE 4: INT PIN OPERATION FOR RECEIVER FOR CHANNELS A-D
FCR BIT-0 = 0
(FIFO DISABLED)
FCR BIT-0 = 1 (FIFO ENABLED)
FCR Bit-3 = 0
(DMA Mode Disabled)
FCR Bit-3 = 1
(DMA Mode Enabled)
INT Pin
0 = no data
1 = 1 byte
0 = FIFO below trigger level
1 = FIFO above trigger level
0 = FIFO below trigger level
1 = FIFO above trigger level
相關PDF資料 |
PDF描述 |
|---|---|
| ST18931CR | 16-BIT, 50 MHz, OTHER DSP, CPGA121 |
| ST40RA150XH6 | 32-BIT, 150 MHz, RISC PROCESSOR, PBGA372 |
| ST40RA200XH6E | 32-BIT, 200 MHz, RISC PROCESSOR, PBGA372 |
| ST52510F3M6 | MICROCONTROLLER, PDSO20 |
| ST52E430B/D | 8-BIT, UVPROM, 20 MHz, MICROCONTROLLER, CDIP32 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ST16C654IQ64TR-F | 制造商:Exar Corporation 功能描述:UART 4-CH 64Byte FIFO 3.3V/5V 64-Pin LQFP T/R 制造商:Exar Corporation 功能描述:ST16C654IQ64TR-F |
| ST16CF54 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Smartcard MCU With 4 KBytes EEPROM 512 Bits Modular Arithmetic Processor |
| ST16CQ32245TBR | 功能描述:開關 IC - 各種 Advanced Logic Signal Switch RoHS:否 制造商:Fairchild Semiconductor 開啟電阻（最大值）: 電源電壓-最大:4.4 V 電源電壓-最小:2.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:WLCSP-9 封裝:Reel |
| ST16DD00 | 功能描述:撥動開關 TOGGLE RoHS:否 制造商:C&K Components 觸點形式:DPDT 開關功能:ON - ON - ON 電流額定值: 電壓額定值 AC:20 V 電壓額定值 DC:20 V 功率額定值:0.4 VA 端接類型:V-Bracket 安裝風格: 端子密封:Epoxy 觸點電鍍:Gold 照明:Not Illuminated |
| ST16FJ | 制造商:Panasonic Electric Works 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復。