參數(shù)資料
型號(hào)： UPD6708
廠(chǎng)商： NEC Corp.
英文描述： IEBusa Inter Equipment Busa PROTOCOL CONTROL LSI
中文描述： IEBusa設(shè)備布薩間協(xié)議控制大規(guī)模集成電路
文件頁(yè)數(shù)： 16/72頁(yè)
文件大?。?/td> 292K
代理商： UPD6708
16
μ
PD6708
2.4
Transfer Data (Contents of Data Field)
The contents of the data field are data specified by the control bits.
Table 2-3. Functions of Control Bits
Bit 3
Note 1
Bit 2
Bit 1
Bit 0
Function
Note 2
0H
0
0
0
0
Reads slave status (SSR)
1H
0
0
0
1
Undefined
2H
0
0
1
0
Undefined
3H
0
0
1
1
Reads and locks data
4H
0
1
0
0
Reads lock address (lower 8 bits)
5H
0
1
0
1
Reads lock address (higher 4 bits)
6H
0
1
1
0
Reads and unlocks slave status (SSR)
7H
0
1
1
1
Reads data
8H
1
0
0
0
Undefined
9H
1
0
0
1
Undefined
AH
1
0
1
0
Writes and locks command
BH
1
0
1
1
Writes and locks data
CH
1
1
0
0
Undefined
DH
1
1
0
1
Undefined
EH
1
1
1
0
Writes command
FH
1
1
1
1
Writes data
Notes 1.
Depending on the value of bit 3 (MSB), the transfer direction of the message length bits of the subsequent
message field and data field differs.
When bit 3 is “1”, data are transferred from the master unit to the slave unit.
When bit 3 is “1”, data are transferred from the slave unit to the master unit.
3H, 6H, AH, and BH are control bits that specify locking or unlocking.
If any of undefined values 1H, 2H, 8H, 9H, CH, or DH is transmitted, no acknowledge bit is returned.
2.
A unit locked by the master unit rejects acknowledging the control bits and does not output the acknowledge bit if the
control bits received from the master unit which requested locking is in any other state than that shown in Table 2-4.
Table 2-4. Control Field Corresponding to Locked Slave Unit
Bit 3
Bit 2
Bit 1
Bit 0
Function
0H
0
0
0
0
Reads slave status
4H
0
1
0
0
Reads lock address (lower 8 bits)
5H
0
1
0
1
Reads lock address (higher 4 bits)
#
相關(guān)PDF資料
PDF描述
UPD6708CX IEBusa Inter Equipment Busa PROTOCOL CONTROL LSI
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UPD6708CX 制造商:NEC 制造商全稱(chēng):NEC 功能描述:IEBusa Inter Equipment Busa PROTOCOL CONTROL LSI
UPD6708GS 制造商:NEC 制造商全稱(chēng):NEC 功能描述:IEBusa Inter Equipment Busa PROTOCOL CONTROL LSI
UPD6708GS(A) 制造商:Renesas Electronics Corporation 功能描述:
UPD67100 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:ASIC
UPD67101 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:ASIC
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