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参数资料
| 型号： | 78Q8430-100IGT/F |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 75/88页 |
| 文件大小： | 0K |
| 描述： | IC LAN MEDIA ACCESS CTLR 100LQFP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 90 |
| 控制器类型： | 以太网控制器，MAC/PHY |
| 电源电压： | 3.3V |
| 电流 - 电源： | 230mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 100-LQFP |
| 供应商设备封装： | 100-LQFP（14x14） |
| 包装： | 托盘 |
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DS_8430_001
78Q8430 Data Sheet
Rev. 1.2
77
Bits
Symbol
Type
Default Description
1
JAB
RC/LH
0
Jabber Detect
In 10Base-T mode, this bit is set during a jabber event. After
the event, the bit remains set until cleared by a read operation.
0
EXTD
R
1
Extended Capability
Reads 1 to indicate the 78Q8430 PHY provides an extended
register set (MR2 and beyond).
7.7.4
PHY Identifier Registers – MR2, MR3
MR2: PHY Identifier Register 1
Bits
Symbol
Type
Value
Description
15:0
OUI
[23:6]
R
000Eh
Organizationally Unique Identifier
This value is 00-C0-39 for Teridian Semiconductor Corporation.
This register contains 16 of the upper 18 bits of the identifier.
MR3: PHY Identifier Register 2
Bits
Symbol
Type
Value
Description
15:10
OUI
[5:0]
R
1Ch
Organizationally Unique Identifier
The remaining 6 bits of the 24-bit OUI.
9:4
MN
R
23h
Model Number
The 23 from the model number is encoded into the 6 bits.
3:0
RN
R
03h
Revision Number
The value 0011 corresponds to the third revision of the silicon.
7.7.5
PHY Auto-Negotiation Advertisement Registers – MR4
Bits
Symbol
Type
Default Description
15
NP
R
0
Next Page
Not supported. Reads logic zero.
14
RSVD
R
0
Reserved
13
RF
R/W
0
Remote Fault
Setting this bit to 1 allows the device to indicate to the link
partner a Remote Fault Condition.
12:5
TAF
R/W
(0Fh)
Technology Ability Field
The default value of this field is dependent upon the MR1.15:
11 register bits. This field can be overwritten by management
to auto-negotiate to an alternate common technology. Writing
to this register has no effect until auto-negotiation is re-initiated.
12
A7
R
0
Reserved
11
ASYMP
R/W
0
Asymmetric PAUSE Operation for Full Duplex Links
0 = Asymmetric PAUSE operation not supported
1 = Asymmetric PAUSE operation is supported
Writing to this register has no effect until auto-negotiation is
re-initiated.
10
PAUSE
R/W
0
PAUSE Operation for Full Duplex Links
0 = PAUSE operation not supported
1 = PAUSE operation is supported
Writing to this register has no effect until auto-negotiation is
re-initiated.
9
A4
R
0
100BASE-T4
The 78Q8430 PHY does not support 100BASE-T4 operations.
8
A3
R/W
1
100BASE-TX Full Duplex
This bit will be set to 1 upon reset and is writeable. Writing to
this register has no effect until auto-negotiation is re-initiated.
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