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SMSC TMC2005-JT MIN, TYP, MAX, MARK, UNIT, ITEMS, REMARK, FIGURE 18 - RX WAVEFORMS AND TX WAVEFORMS, AC CHARACTERISTIC – Rx waveforms and Tx waveforms

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ARCNET 5 Port HUB Controller

Datasheet

AC CHARACTERISTIC – Rx waveforms and Tx waveforms

RXINx (S=1)		t1				t2
						t2


(Received port)
(Received port)			t3
			t3

t4

t5

TXENy(M=1, L=0)

* 4 ports except received port

t6

t7

t8

t10

nP1BAK

/TXENy(M=0, L=0)

t9

* 4 ports except received port

t11

t12

t13

t15

nPULSE1

t14

t16

t17

t18

nPULSE2

t19

FIGURE 18 - RX WAVEFORMS AND TX WAVEFORMS

ITEMS	MARK	MIN		TYP	MAX	UNIT	REMARK

RXIN Low Pulse Width	t1	15				nS

RXIN High Pulse Width	t2	15				nS

RXIN Period	t3			Tdr		nS	(Value at 2.5Mbps)

				(400)
				(400)

RXIN First Active Edge to TXEN Active	t4	2/8Tdr			3/8Tdr+50	nS	(ValueNote1 at 2.5Mbps)

		(100)			(200)
		(100)			(200)

RXIN Last Active Edge to TXEN Inactive	t5	111/8Tdr			112/8Tdr+50	nS	(ValueNote1 at 2.5Mbps)

		(5,550)			(5,650)
		(5,550)			(5,650)

RXIN First Active Edge to	t6	9/8Tdr			10/8Tdr+50	nS	Note2, Note3
RXIN First Active Edge to							Note2, Note3
nP1BAK/TXEN First Active Edge		(450)			(550)		(Value at 2.5Mbps)
		(450)			(550)

nP1BAK/TXEN Low Pulse Width	t7			1/2Tdr		nS	(ValueNote2 at 2.5Mbps)

				(200)
				(200)

nP1BAK/TXEN High Pulse Width	t8			1/2Tdr		nS	(ValueNote2 at 2.5Mbps)

				(200)
				(200)

nP1BAK/TXEN Period	t9			Tdr		nS	(ValueNote2 at 2.5Mbps)

				(400)
				(400)

RXIN Active Edge to	t10	5/8Tdr		9/8Tdr+50	14/8Tdr+50	nS	Note2, Note3
nP1BAK/TXEN Active Edge							Note2, Note3
nP1BAK/TXEN Active Edge		(250)		(500)	(750)		(Value at 2.5Mbps)
(Except First Edge of RXIN)		(250)		(500)	(750)

SMSC TMC2005-JT			Page 29				Revision 1.1 (07-24-07)

DATASHEET

Contents

FEATURES GENERAL DESCRIPTION ORDERING INFORMATION Page TABLE OF CONTENTS PIN CONFIGURATION BLOCK DIAGRAM DESCRIPTION OF PIN FUNCTIONS TX/RX Interface FEATURE Operating Mode Setup INPUT PLL Must always connect to VDD Other Signals FEATURES OPERATIONAL DESCRIPTION Direction Determination Direction Release Jitter Filter 1)Input Sampling Option Feature for Jitter Filtering 1)Big jitter (BJ) mode Note: [Complement] 2)Changing polar of RX port APPLICATION NOTES FIGURE 2 - APPLICATION EXAMPLE FIGURE 3 - APPLICATION EXAMPLE FIGURE 4 - APPLICATION EXAMPLE FIGURE 5 - APPLICATION EXAMPLE FIGURE 6 - APPLICATION EXAMPLE FIGURE 7 - APPLICATION EXAMPLE FIGURE 8 - APPLICATION EXAMPLE PORT GROUP CONNECTING THE TMC2005 WITH INTERNAL PLL Method To Connect A Crystal Clock FIGURE 11 - CONNECTING THE CRYSTAL CLOCK Note 1: Note 2: nPLLTST pin CASCADING CONNECTION FIGURE 13 - CASCADE CONNECTION OF 8 PORT HUB FIGURE 14 - CASCADE CONNECTION OF 8 PORT HUB FIGURE 15 - CASCADE CONNECTION OF 16 PORT HUB Ring Network With the TMC2005 FIGURE 16 - RING CONFIGURATION Example for system hang-up Example for no hang-up Note 3: MAXIMUM GUARANTEED RATINGS Vss ITEM SYMBOL RATING DC CHARACTERISTIC - OUTPUT PIN PIN AC CHARACTERISTIC - CLOCK and RESET TYP FIGURE 17 - CLOCK AND RESET AC CHARACTERISTIC – Rx waveforms and Tx waveforms FIGURE 18 - RX WAVEFORMS AND TX WAVEFORMS ITEMS MARK REMARK Page TMC2005-JT64 PIN TQFP PACKAGE OUTLINE