參數(shù)資料
型號(hào): UPD72042
廠商: NEC Corp.
英文描述: LSI DEVICES FOR Inter Equipment BusTM (IEBusTM) PROTOCOL CONTROL
中文描述: LSI器件間設(shè)備BusTM(IEBusTM)協(xié)議控制
文件頁數(shù): 74/92頁
文件大?。?/td> 373K
代理商: UPD72042
μ
PD72042
74
Data Sheet S14870EJ1V0DS00
(1) Master transmission processing routine 1
Fig. 6-6 shows the flow of master transmission processing routine 1.
Fig. 6-6 Flow of Master Transmission Processing Routine 1
Start
SAR1
Slave address (four low-order bits)
SAR2
Slave address (eight high-order bits)
MCR
Broadcast bits, number of arbitrations,
and control bits (The MSB is 1.)
Read STR
TEP
1
0
Read FLG
CEX
0
1
CMR
00010000
Read FLG
CEX
0
1
TBF
Number of bytes
in transmission data
|
1
I >
N
Y
Read STR
TFL
1
0
|
| + 1
TBF
Transmission data (I-th byte)
1
Read FLG
CEX
0
End
CMR
00001000
MTRQF
1
;
Waiting for termination of previous command
;
Set clear command for transmission buffer.
; Waiting for termination of processing of
transmission buffer clear command
;
Initialize |.
;
Setting tranmission data in TBF completed
;
; Waiting for termination of
processing of master communication
request command
Number of bytes
in tranmission data
Set master communication
request command.
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