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MX98745 PDF даташит

Спецификация MX98745 изготовлена ​​​​«Macronix International» и имеет функцию, называемую «100 BASE-TX/FX REPEATER CONTROLLER».

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Номер произв MX98745
Описание 100 BASE-TX/FX REPEATER CONTROLLER
Производители Macronix International
логотип Macronix International логотип 

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MX98745 Даташит, Описание, Даташиты
www.DataSheet4U.com
PRELIMINARY
MX98745
100 BASE-TX/FX
REPEATER CONTROLLER
1.0 FEATURES
• IEEE 802.3u D5 repeater and management compatible
• Support 7 TX/FX ports and 1 universal port (TX or MII
port selectable)
• Support 8-scale utilization and collision rate LED display
• Asynchronous Expansion port clock supported for
easily stackable application
• Separate jabber and partition state machines for each
port
• On-chip elasticity buffer for PHY signal re-timing to the
MX98745 clock source
• Contents of internal register loaded from EEPROM
• PCS/MAC type MII interface selectable
• CMOS device features high integration and low power
with a signle +5V supply
2.0 GENERAL DESCRIPTION
The MX98745, Second generation 100 Mb/s TX/FX Hub
Controller (XRC II), is designed specifically to meet the
needs of today's high speed Fast Ethernet networking
systems. The MX98745 is fully IEEE 802.3u D5 clause
27 repeater compatible.
Difference from MX98741, which provides 8 dedicated
TX/FX ports and 3 MII ports, MX98745 support 7 dedi-
cated TX/FX ports and one programmble TX/FX/MII port.
Whenever MII port is programmed, MX98745 also sup-
ports the flexibility to make user can easily select PCS or
MAC type MII for system application. With this program-
mable MII interface, user can easily connect MX98745 to
MX98742 (Bridge), or T4 transceiver. Or user can use
this programmable MII interface to connect to either MAC
or PCS type data transceiver.
All contents of internal registers are loaded from
EEPROM in MX98745. If system application prefers
default setting instead of using contents from EEPROM,
EEPROM operation can be disabled by setting EECONF
to low. This feature faciliates system modulization appli-
cation.
8 scale of utilization LED is also provided by MX98745.
They are 1%, 3%, 5%, 10%, 20%, 40%, 60% and 80+%.
The defination for utiliztion is Mbs Received/100 Mb within
one second sampling period. Meanwhile, RX/LINK, Par-
tition, Isolation and Collision status are also provided
through LED display.
A great improvement in MX98745 (compared to
MX98741) is that it also provides "synchronous expan-
sion port data transfer mode" to make stackable design
more easier.
P/N:PM0427
REV. 1.4, JUL. 8, 1998
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MX98745 Даташит, Описание, Даташиты
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3.0 BLOCK DIAGRAMS
MX98745
MDC MDIO
RESEL
Jabber Clock Generator
SCRCTRL
Repeater Core
&
Control/Status
Registers
LSCLK
SIGDET[7:0]
Port 0 5B RX/
Port 0 4B RX
Port 0 5B RX/
Port 0 4B RX
Port 7 RX
Relative FUN
Port 7
Relative FUN
RDAT0[4:0]
RSCLK0
TDAT0[4:0]
TXCLK
(MII Only)
RDAT7[4:0]
RSCLK7
TDAT7[4:0]
Expansion Port Function
Utilization/ Status LED
Display FUN
EDACT JAMI EDAT[4:0] EPCLK JAMO EDENL EDCRS ANYACT LED[8:0] LDSEL[2:0]
Figure 3-1 Block Diagram forMX98745
P/N:PM0427
REV. 1.4, JUL. 8, 1998
2









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MX98745 Даташит, Описание, Даташиты
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4.0 PIN CONFIGURATION
GND
RSCLK6
SIGDET6
RDAT60
RDAT61
RDAT62
RDAT63
RDAT64
TDAT60
TDAT61
TDAT62
TDAT63
TDAT64
GND
RSCLK7
SIGDET7
GND
RDAT70
RDAT71
RDAT72
RDAT73
RDAT74
VDD
TDAT70
TDAT71
TDAT72
TDAT73
TDAT74
VDD
LSCLK
IBMON
TSEL
TEST
XCOLED
SCRCTRL
RESETL
COL
MDO
MDIO
VDD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
MX98745
MX98745
120 VDD
119 SIGDET3
118 RSCLK3
117 TDAT24
116 TDAT23
115 TDAT22
114 TDAT21
113 TDAT20
112 VDD
111 RDAT24
110 RDAT23
109 RDAT22
108 RDAT21
107 RDAT20
106 GND
105 SIGDET2
104 RSCLK2
103 VDD
102 TDAT14
101 TDAT13
100 TDAT12
99 TDAT11
98 TDAT10
97 GND
96 RDAT14
95 RDAT13
94 RDAT12
93 RDAT11
92 RDAT10
91 SIGDET1
90 RSCLK1
89 MON
88 LED7/PHY4
87 LED6/PHY3
86 LED5/PHY2
85 LED4/PHY1
84 LED3/PHY0
83 LED2/TXMII
82 LED1/PMSEL
81 GND
Figure 4-1 Pin Configuration for XRCII
P/N:PM0427
REV. 1.4, JUL. 8, 1998
3










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