- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄372122 > SC28C94 (NXP Semiconductors N.V.) Quad universal asynchronous receiver/transmitter QUART PDF資料下載
參數(shù)資料
| 型號： | SC28C94 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Quad universal asynchronous receiver/transmitter QUART |
| 中文描述： | 四通用異步接收器/發(fā)送器夸脫 |
| 文件頁數(shù)： | 22/38頁 |
| 文件大小： | 230K |
| 代理商： | SC28C94 |
第1頁第2頁第3頁第4頁第5頁第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頁當(dāng)前第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
Philips Semiconductors
Product specification
SC28C94
Quad universal asynchronous receiver/transmitter (QUART)
1998 Aug 19
22
With Type = x11, the # Bytes field indicates the count of received
bytes available for reading, while with Type = x10 it indicates the
number of bytes that can be written to the transmit FIFO.
The CIR is Read only at address 28H.
Global Interrupt Byte Count (GIBC)
00000
# Bytes
5
3
The GIBC is not an actual register but simply outputs the interrupting
UART’s transmit or receive byte counter value. The count, accurate
at the time IACKN asserts, is captured in the CIR. The high order 5
bits are read as ‘0’. The GIBC is read only at address 2AH.
Global RxFIFO (GRxFIFO)
Received Data
8
If a receiver is not the cause of the current interrupt, a read of the
Global RxFIFO will yield a byte containing all ones and NONE of the
UART channels’ receive FIFOs will be popped. (IMPORTANT)
The GRxFIFO is Read only at address 2BH.
Global TxFIFO (GTxFIFO)
Data to be Sent
8
If a transmitter is not the cause of the current interrupt, a write to the
Global TxFIFO has no effect.
The GTxFIFO is Write only at address 2BH.
Global Interrupting Channel (GICR)
000000
Chan #
6
2
Like the other Global pseudo-registers no hardware register exists.
The Channel number field of the Current Interrupt Register padded
with leading zeros is output as the GICR. The GICR is Read only at
address 29H.
C/Tab indicated by Channel code B 01
C/Tcd indicated by Channel code D 11
Interrupt Control (ICR)
Threshold
IVC
6
2
The Threshold Field is used by the interrupt comparator to
determine if a winning interrupt “bid” should result in interrupting the
host MPU. The threshold field resets to 00.
The IVC field controls what kind of vector the QUART returns to the
host MPU during an Interrupt Acknowledge cycle:
00
Output contents of Interrupt Vector Register
01
Output 6 MSBs of IVR and Channel number as 2 LSBs
10
Output 3 MSBs of IVR, Interrupt Type and Channel number
11
Disable generation of vector during IACK cycle.
Returns hex’FF during an IACKN cycle.
The IVC field reset to 00. The ICR is read/write at address 2CH.
Bidding Control Registers (BCRs)
Received Break
State Change
C/T
3
3
2
This register is a transparent latch. It must be set to ensure the
expected operation of the arbitration system. The 3 MSBs
determine the priority of Received Break Interrupts; they are reset to
000.
Bits 4:2 determine the priority of Change of Input State interrupts,
and are reset to 00.
BCR Counter/Timer bits reset to 00.
There is one BCR per UART channel; they can be read or written at
addresses 20-23H.
Interrupt Vector (IVR)
The 8 bits of the interrupt vector
Interrupt Vector (IVR-Modified)
Always Used
with IVC = 0x
w/IVC = 01 or 10
3
3
2
Holds the constant bits of the interrupt acknowledge vector. As
shown, the three MSBs are always used, while the less significant
bits can be replaced by the interrupt type code and/or Channel code
bits contained in the CIR. The IVR is write only at address 29H.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SC28C94A1N | Quad universal asynchronous receiver/transmitter QUART |
| SC28L194 | Quad UART for 3.3V and 5V supply voltage(在3.3V和5V電源電壓中應(yīng)用的四 UART) |
| SC28L198 | Octal UART for 3.3V and 5V supply voltage |
| SC28L198A1 | Octal UART for 3.3V and 5V supply voltage |
| SC28L198C1A | Cable Ties; Color:Black; Pack Quantity:100 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SC28C94A1A | 功能描述:UART 接口集成電路 UART QUAD W/FIFO RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
| SC28C94A1A,512 | 功能描述:UART 接口集成電路 UART QUAD W/FIFO RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
| SC28C94A1A,518 | 功能描述:UART 接口集成電路 5V 4 CH UART IND TEMP RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
| SC28C94A1A | 制造商:NXP Semiconductors 功能描述:IC CMOS QUART SMD 28C94 PLCC52 |
| SC28C94A1A512 | 制造商:Rochester Electronics LLC 功能描述: 制造商:NXP 功能描述: 制造商:NXP Semiconductors 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。