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MU9C2480A-70DC 参数 Datasheet PDF下载

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型号: MU9C2480A-70DC
PDF下载: 下载PDF文件 查看货源
内容描述: LANCAM A / L系列 [LANCAM A/L series]
分类和应用: 局域网
文件页数/大小: 32 页 / 332 K
品牌: MUSIC [ MUSIC SEMICONDUCTORS ]
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LANCAM A/L series (not recommended for new designs)  
Operational Characteristics  
Table 2: Input/Output Operations  
Cycle Type  
/E /C  
M
/
W
I/O Status SPS SPD TC Operation  
O
Notes  
Cmd Write  
L
L
L
IN  
IN  
IN  
IN  
IN  
IN  
IN  
Load Instruction decoder  
1
2,3  
3
3
3
3
3
3
3
3
Load Address register  
Load Control register  
Load Page Address register  
Load Segment Control register  
Load Device Select register  
Deselected  
3
10  
Cmd Read  
L
L
H
OUT  
OUT  
3
3
Read Next Free Address register  
Read Address register  
3
3
OUT  
OUT  
OUT  
OUT  
OUT  
OUT  
OUT  
HIGH-Z  
Read Status Register bits 15–0  
Read Status Register bits 31–16  
Read Control register  
Read Page Address register  
Read Segment Control register  
Read Device Select register  
Read Current Persistent Source or Destination  
Deselected  
4
5
3
3
3
3
3,11  
10  
3
3
3
3
3
Data Write  
L
H
L
IN  
IN  
IN  
IN  
IN  
IN  
IN  
3
3
3
3
3
3
Load Comparand register  
Load Mask Register 1  
Load Mask Register 2  
Write Memory Array at address  
Write Memory Array at Next Free address  
Write Memory Array at Highest-Priority match  
Deselected  
6,9  
7,9  
7,9  
7,9  
7,9  
7,9  
10  
Data Read  
L
H
X
H
X
OUT  
OUT  
OUT  
OUT  
OUT  
3
3
3
3
3
Read Comparand register  
Read Mask Register 1  
Read Mask Register 2  
Read Memory Array at address  
Read Memory Array at Highest-Priority match  
Deselected  
6, 9  
8, 9  
8, 9  
8, 9  
7, 8  
10  
HIGH-Z  
H
HIGH-Z  
Deselected  
Notes:  
1.  
2.  
Default Command Write cycle destination (does not require a TCO instruction).  
Default Command Write cycle destination (no TCO instruction required) if Address Field flag was set in bit 11 of the instruction loaded in the  
previous cycle.  
3.  
Loaded or read on the Command Write or Read cycle immediately following a TCO instruction. Active for one Command Write or Read cycle only.  
NFA register can not be loaded this way.  
4.  
5.  
Default Command Read cycle source (does not require a TCO instruction).  
Default Command Read cycle source (does not require a TCO instruction) if the previous cycle was a Command Read of Status Register Bits 15–0.  
If next cycle is not a Command Read cycle, any subsequent Command Read cycle accesses the Status Register Bits 15–0.  
Default persistent source and destination on power-up and after Reset. If other resources were sources or destinations, SPD CR or SPS CR restores  
the Comparand register as the destination or source.  
6.  
7.  
8.  
9.  
Selected by executing a Select Persistent Destination instruction.  
Selected by executing a Select Persistent Source instruction.  
Access may require multiple 16-bit Read or Write cycles. The Segment Control register controls the selection of the desired 16-bit segment(s) by  
establishing the Segment counters’ start and end limits and count values.  
10. Device is deselected if Device Select register setting does not equal Page Address register setting, unless the Device Select Register is set to  
FFFFH, which allows only write access to the device. (Writes to the Device Select register are always active.) Device may also be deselected under  
locked daisy chain conditions as shown in Table 4.  
11. A Command Read cycle after a TCO PS or TCO PD reads back the Instruction decoder bits that were last set to select a persistent source or  
destination. The TCO PS instruction also reads back the Device ID.  
10  
Rev. 1