- 您現(xiàn)在的位置：買賣IC網 > PDF目錄370292 > FX919A 4-Level FSK Packet Data Modem PDF資料下載
參數資料
| 型號： | FX919A |
| 英文描述： | 4-Level FSK Packet Data Modem |
| 中文描述： | 四級別FSK信號分組數據調制解調器 |
| 文件頁數： | 16/44頁 |
| 文件大小： | 1537K |
| 代理商： | FX919A |
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頁當前第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
4-Level FSK Modem Data Pump
FX919A
1996 Consumer Microcircuits Limited
16
D/919A/4
When the modem is in receive mode, the μC should wait until the BFREE bit of the Status Register is '1', then
write the desired task to the Command Register.
Once the byte containing the desired task has been written to the Command Register, the modem will:
Set the BFREE bit of the Status Register to '0'.
Wait until enough received symbols are in the De-interleave Buffer.
Decode them as needed, and transfer the resulting binary data to the Data Block Buffer
Then the modem will set the BFREE and IRQ bits of the Status Register to '1', (causing the IRQN
output to go low if the IRQNEN bit of the Mode Register has been set to '1') to tell the μC that it may
read from the Data Block Buffer and write the next task to the modem. If more than 1 byte is contained
in the buffer, byte number 0 of the data will be read out first.
In this way the μC can read data and write a new task to the modem while the received symbols needed for this
new task are being received and stored in the De-interleave Buffer.
BFREE bit of Status Register
for task 1
for task 2
RXIN signal
Task 1
Task 2
Task 1 data
Data from Block Buffer to μC
Task from μC to Command Register
IRQN o/p (IRQNEN = '1')
IRQ bit of Status Register
Figure 9 Receive Task Overlapping
Detailed timings for the various tasks are given in Figures 10 and 11.
FX919A Modem Tasks:
B2
0
0
0
0
B1
0
0
1
1
B0
0
1
0
1
Receive Mode
Transmit Mode
NULL
SFSH
RHB
RILB
NULL
T24S
THB
TIB
Search for FS + Header
Read Header Block
Read Intermediate or Last
Block
Search for Frame Sync
Read 4 symbols
Transmit 24 symbols
Transmit Header Block
Transmit Intermediate Block
1
1
1
1
0
0
1
1
0
1
0
1
SFS
R4S
NULL
RESET
TLB
T4S
NULL
RESET
Transmit Last Block
Transmit 4 symbols
Cancel any current action
Cancel any current action
相關PDF資料 |
PDF描述 |
|---|---|
| FXA1012 | Frame Transfer CCD Image Sensor |
| FXA1012WC | Frame Transfer CCD Image Sensor |
| FXC6000 | Distributed Power Front-End |
| FXC7000 | Distributed Power Front-End |
| FXC7000-48-S | Distributed Power Front-End |
相關代理商/技術參數 |
參數描述 |
|---|---|
| FX919AD2 | 制造商:CMLMICRO 制造商全稱:CML Microcircuits 功能描述:4-Level FSK Modem Data Pump |
| FX919AD5 | 制造商:CMLMICRO 制造商全稱:CML Microcircuits 功能描述:4-Level FSK Modem Data Pump |
| FX919AP4 | 制造商:CMLMICRO 制造商全稱:CML Microcircuits 功能描述:4-Level FSK Modem Data Pump |
| FX919B | 制造商:CMLMICRO 制造商全稱:CML Microcircuits 功能描述:Evaluation Kit User Manual |
| FX929A | 制造商:CMLMICRO 制造商全稱:CML Microcircuits 功能描述:4-Level FSK Modem Data Pump |
發(fā)布緊急采購，3分鐘左右您將得到回復。