21145
iv
Preliminary
Datasheet
3.16
Write Access to Modem Chipset.........................................................................37
3.16.1 Read Access to Modem Chipset............................................................37
4.0
Mechanical Specifications................................................................................................39
Figures
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4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
21145 Block Diagram............................................................................................3
21145 176-pin Pinout Diagram (Top View)...........................................................4
21145 144-pin Pinout Diagram (Top View)...........................................................5
PCI and CardBus Clock Specification Timing Diagram ......................................21
Timing Diagram for Other PCI and CardBus Signals..........................................22
Receiver data symbol signal mask......................................................................24
Internal SIA Mode 10BASE-T Interface Timing Diagram—Transmit ..................26
Internal SIA Mode 10BASE-T Interface Timing Diagram—Receive ...................27
Internal SIA Mode 10BASE-T Interface Timing Diagram—Idle Link Pulse.........28
MII/SYM Port Timing Diagram—Transmit...........................................................29
MII/SYM Port Timing Diagram—Receive............................................................30
SYM Port Timing Diagram—Signal Detect .........................................................31
MII Port Timing Diagram—Receive Error............................................................32
MII Port Timing Diagram—Carrier Sense and Collision......................................32
Expansion ROM Read Timing Diagram..............................................................33
Expansion ROM Write Timing Diagram ..............................................................34
Serial ROM Port Timing Diagram........................................................................35
External Register Read Timing Diagram.............................................................36
External Register Write Timing Diagram.............................................................36
Write Access Timing ...........................................................................................37
Read Access Timing ...........................................................................................38
21145 Package Marking .....................................................................................39
176-Pin TQFP Package ......................................................................................40
144-Pin TQFP Package ......................................................................................41
Tables
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Functional Description of 21145 Signals...............................................................6
Input Pins (Sheet 1 of 2) ....................................................................................13
Output Pins .........................................................................................................14
Input/Output Pins ................................................................................................15
Open Drain Pins..................................................................................................15
Signal Functions..................................................................................................16
Voltage Limit Ratings..........................................................................................18
Temperature Limit Ratings..................................................................................18
Crystal Oscillator Specification............................................................................19
21145 Power Specifications (25 MHz)................................................................19
21145 Power Specifications (33 MHz)................................................................19
I/O Voltage Specifications for 5 V Levels............................................................20
I/O Voltage Specifications for 3.3 V Levels.........................................................20
Reset Timing Parameters ..................................................................................20
PCI and CardBus Clock Timing Specifications ...................................................21