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參數(shù)資料
| 型號： | SC28C94A1A,512 |
| 廠商： | NXP Semiconductors |
| 文件頁數(shù)： | 5/39頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC UART QUAD W/FIFO 52-PLCC |
| 產品培訓模塊： | Stand-Alone UARTs |
| 標準包裝： | 23 |
| 特點： | 故障啟動位檢測 |
| 通道數(shù)： | 4，QUART |
| FIFO's： | 8 字節(jié) |
| 電源電壓： | 5V |
| 帶自動流量控制功能： | 是 |
| 帶故障啟動位檢測功能： | 是 |
| 帶調制解調器控制功能： | 是 |
| 帶CMOS： | 是 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 52-LCC（J 形引線） |
| 供應商設備封裝： | 52-PLCC（19.2x19.2） |
| 包裝： | 管件 |
| 產品目錄頁面： | 828 (CN2011-ZH PDF) |
| 其它名稱： | 568-3993-5 935262534512 SC28C94A1A SC28C94A1A-ND |
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Philips Semiconductors
Product data sheet
SC28C94
Quad universal asynchronous receiver/transmitter (QUART)
2006 Aug 09
13
Vectored Interrupts
The QUART responds to an Interrupt Acknowledge (IACK) initiated
by the host by providing an Interrupt Acknowledge Vector on D7:0.
The interrupt acknowledge cycle is terminated with a DACKN pulse.
The vector provided by the QUART can have one of the three forms
under control of the IVC control field (bits 1:0 of the Interrupt Control
Register):
With IVC = 00 (IVR only)
IVR7:0
8
With IVC = 01 (channel number)
IVR7:2
6
Chan #
2
With IVC = 10 (type & channel number)
IVR7:5
3
Chan #
2
Type
3
SD00163
A code of 11 in the Interrupt Vector Control Field of the ICR results
in NO interrupt vector being generated. The external data bus is
driven to a high impedance throughout the IACK cycle. A DACKN
will be generated normally for the IACK cycle, however.
NOTE: If IACKN is not being used then the command “UPDATE
CIR” must be issued for the global and interrupt registers to be
updated.
PROGRAMMING UART CONTROL REGISTERS
The operation of the QUART is programmed by writing control
words into the appropriate registers. Operational feedback is
provided via status registers which can be read by the CPU.
Addressing of the registers is described in Table 1.
The bit formats of the QUART registers are depicted in Table 2.
Table 4.
Register Bit Formats, Duart ab. [duplicated for Duart cd]
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
MR0 (Mode Register 0)
Rx Watchdog
Timer
RxINT2 bit
TxINT Control
These bits not implemented.
They should be considered Reserved.
0 = off
1 = on
These bits should normally be set to 0
x
MR1 (Mode Register 1)
RxRTS
Control
RxINT1 Select
Error Mode*
Parity Mode
Parity Type
Bits per Character
0 = No
1 = Yes
Normally set to 0
0 = Char
1 = Block
00 = With parity
01 = Force parity
10 = No parity
11 = Wake-up mode
0 = Even
1 = Odd
00 = 5
01 = 6
10 = 7
11 = 8
NOTE: *In block error mode, block error conditions must be cleared by using the error reset command (command 4x) or a receiver reset.
MR2 (Mode Register 2)
Channel Mode
TxRTS
Control
CTS Enable Tx
Stop Bit Length*
00 = Normal
01 = Auto-echo
10 = Local loop
11 = Remote loop
0 = No
1 = Yes
0 = No
1 = Yes
0 = 0.563 4 = 0.813 8 = 1.563 C = 1.813
1 = 0.625 5 = 0.875 9 = 1.625 C = 1.875
2 = 0.688 6 = 0.938 A = 1.688 E = 1.938
3 = 0.750 7 = 1.000 B = 1.750 F = 2.000
NOTE: Add 0.5 to values shown above for 0–7, if channel is programmed for 5 bits/char.
CSR (Clock Select Register)
Receiver Clock Select
Transmitter Clock Select
See text
CR (Command Register)
Miscellaneous Commands
Disable Tx
Enable Tx
Disable Rx
Enable Rx
See text
0 = No
1 = Yes
0 = No
1 = Yes
0 = No
1 = Yes
0 = No
1 = Yes
NOTE: Issuing commands contained in the upper four bits of the “Command Register” should be separated in time by at least three (3) X1
clock edges. Allow four (4) edges if the “X1 clock divide by 2” mode is used. A disabled transmitter cannot be loaded.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| SC28C94A1A512 | 制造商:NXP Semiconductors 功能描述:IC QUAD UART FIFO 230.4KBAUD 5.5V LCC-52 |
| SC28C94A1AB | 制造商:PHILIPS-SEMI 功能描述: |
| SC28C94A1N | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Quad universal asynchronous receiver/transmitter QUART |
| SC28C94A1N,112 | 功能描述:IC UART QUAD W/FIFO 48-DIP RoHS:是 類別:集成電路 (IC) >> 接口 - UART（通用異步接收器/發(fā)送器） 系列:- 標準包裝:250 系列:- 特點:* 通道數(shù):2，DUART FIFO's:16 字節(jié) 規(guī)程:RS232，RS485 電源電壓:2.25 V ~ 5.5 V 帶并行端口:- 帶自動流量控制功能:是 帶IrDA 編碼器/解碼器:是 帶故障啟動位檢測功能:是 帶調制解調器控制功能:是 帶CMOS:是 安裝類型:表面貼裝 封裝/外殼:48-TQFP 供應商設備封裝:48-TQFP（7x7） 包裝:托盤 其它名稱:XR16L2551IM-F-ND |
| SC28L194 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Quad UART for 3.3V and 5V supply voltage |
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