- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄367830 > PCSER4 PC(ISA)BUS I/O CARD PDF資料下載
參數(shù)資料
| 型號(hào)： | PCSER4 |
| 英文描述： | PC(ISA)BUS I/O CARD |
| 中文描述： | 電腦（ISA）總線的I / O卡 |
| 文件頁(yè)數(shù)： | 6/16頁(yè) |
| 文件大小： | 285K |
| 代理商： | PCSER4 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)當(dāng)前第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)
J228 PCSER4
2192-09375-000-000
Page 6
Table 3: Transmit Data
Table 4: Receive Data
Baud Rates
The SCC has one 16-bit baud rate counter per channel for both receive and transmit, so both
run at the same baud rate. In asynchronous mode, the clock must be used in a x16 mode, so
the baud rate calculation is:
time constant
= 230400
baud rate
- 2
Typical baud rates and their time constants are:
Table 5: Typical Baud Rates
The 16-bit counter is set up by writing the lower byte of the time constant to SCC register 12
(decimal) and the upper byte to register 13 (decimal). The baud rates above all have time
constants of less than 256, so their upper bytes are all zero.
Explanation
Command
Sets up the PCSER4 for the SCC read register 0 (status) on
channel 0
Reads status
Write 02 to 180H (the pointer register)
Read from 181H (the data register)
A result of 4 means the Tx buffer is empty, so another byte can
be sent. If not, loop back to the read at 181H
Sets up the PCSER4 for an access to the SCC data register on
channel 2
The byte goes to the transmit buffer and is sent
Logically
AND
the value read with 4
Write 03 to 180H (the pointer register)
Write data byte to be transmitted to 181H (the data register)
Explanation
Command
Sets up the PCSER4 for the SCC read register 0 (status) on
channel 2
Read status
Write 02 to 180H (the pointer register)
Read from 181H (the data register)
A result of 1 means that there is a byte in the receive register.
If not, loop back to the read at 181H
Sets up the PCSER4 for an access to the SCC data register
channel 2
Reads Serial Data.
Logically
AND
the value read with 1
Write 03 to 180H (the pointer register)
Read from the data register
TC
Baud
0
115200
4
38400
10
19200
9600
22
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PCSS2 | BESTUECKUNGSRAHMEN 500X220MM |
| PCSS4 | BESTUECKUNGSRAHMEN 500X350MM |
| PCT14 | Cordless Telephone Handest Subsystem |
| PCT14P | Telecommunication IC |
| PCT14S | Telecommunication IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCSG-36B.30 | 制造商:Thomas & Betts 功能描述:PMAFLEX,CSA,UL REC.NW36,BL |
| PCSGU250 | 制造商:Velleman Inc 功能描述:USB PC Oscilloscope with Function Generator 制造商:Velleman Inc 功能描述:Pc-Usb 2 Channel Oscilloscope And Function Generator |
| PCSH-B-CR | 功能描述:非熱縮管和套管 CUSHION SLEEVE RoHS:否 制造商:Panduit 產(chǎn)品:Cable Wraps 類型:Spiral 顏色:Black 材料:PP 內(nèi)徑:0.03 in 長(zhǎng)度:100 ft |
| PCSH-B-CR | 制造商:Panduit Corp 功能描述:CUSHION SLEEVING 30.5M RL |
| PCSHC2D18-100T-RC | 制造商:ALLIED 制造商全稱:Allied Components International 功能描述:Power Chip Shielded Inductors |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。