參數(shù)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(shù)據(jù)調制解調器
文件頁數(shù): 20/44頁
文件大?。?/td> 1537K
代理商: FX919A
4-Level FSK Modem Data Pump
FX919A
1996 Consumer Microcircuits Limited
20
D/919A/4
Task Timings
from task #2
from task #3
from task #1
t1
t2
t2
t2
Task to Command Register
Data to Data Block Buffer
t3
t3
t3
t4
t4
t4
Modem Tx output
1
2
3
1
2
Symbols to
RRC filter
3
IBEMPTY bit
BFREE bit
Figure 10 Transmit Task Timing Diagram
Task
Time
(symbol times)
t1
Modem in idle state. Time from writing first
task to application of first transmit bit to Tx
RRC filter
Time from application of first symbol of the
task to the Tx RRC filter until BFREE goes
to a logic '1' (high).
Time to transmit all symbols of the task
Any
1 to 2
t2
T24S
5
16
0
24
66
4
18
49
3
THB/TIB/TLB
T4S
T24S
THB/TIB/TLB
T4S
T24S
THB/TIB/TLB
T4S
t3
t4
Max time allowed from BFREE going to a
logic '1' (high) for next task (and data) to
be written to modem
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