am79c988a ETC-unknow, am79c988a Datasheet - Page 18

• Manufacturer Part Number: am79c988a
• Description: Quad Integrated Ethernet Transceiver Quiet
• Manufacturer: ETC-unknow

SWITCHING CHARACTERISTICS over operating ranges unless otherwise specified
18
Parameter
Clock and Reset Timing
Transmit Timing
Receive Timing
Collision Timing
Serial Interface Timing
Symbol
t
t
t
t
t
t
PWODO
t
DODION
DODISD
PWKDO
PWORD
PWKRD
t
t
t
t
t
t
t
t
t
t
t
t
t
t
PERLP
t
t
t
t
t
t
PWLP
t
t
RETD
COFF
CPER
SDSU
SDHD
SSSU
SSHD
SSDO
t
CLKH
CLKR
CLKF
t
PRST
t
TETD
JREC
CLKL
RON
t
CON
CPW
TON
RVD
RSD
t
t
CLK
RST
TSD
t
t
RM
RR
JR
RF
JA
CLK Clock Period
CLK Clock High
CLK Clock Low
CLK Rise Time
CLK Fall Time
Reset Pulse Width (RST pin LOW)
Reset Pulse Width at Power Up
PDO Pulse Width Accept/ Reject Thresh-
old
PDO Pulse Width Maintain/Turn-Off
Threshold
Transmit Start-Up Delay
Transmit Static Propagation Delay (PDO
to TXD)
Transmit End of Transmission (for TXD)
Idle Signal Period
Link Pulse Width
Transmit Jabber Activation Time
Transmit Jabber Reset Time
Transmit Jabber Recovery Time (Mini-
mum time gap between packets to prevent
Jabber activation)
PDO to PDI Start-up Delay
PDO to PDI Static Propagation Delay
RXD Pulse Width Accept/Reject
Threshold
RXD Pulse Width Maintain/Turn-Off
Threshold
Receiver Start-up Delay (RXD to PDI)
First Validly Timed Bits
Receiver Static Propagation Delay (RXD
to PDI)
PDI End of Transmission
PDI, PCI Rise Time
PDI, PCI Fall Time
PDI, PCI Rise and Fall Time Mismatch (t
- t
Collision Turn On Delay
Collision Turn Off Delay
Collision Period
Collision Output Pulse Width
CLK to DIR Setup Time
DIR Hold Time
CLK to SDATA Setup Time
CLK to SDATA Hold Time
CLK to Output Delay
RF
)
Parameter Description
P R E L I M I N A R Y
RR
Am79C988A
Input > V
Input > V
Test Conditions
(Note 1)
(Note 1)
(Note 1)
(Note 3)
(Note 4)
(Note 7)
(Note 1)
(Note 7)
(Note 7)
(Note 1)
(Note 5)
(Note 6)
(Note 1)
(Note 1)
(Note 1)
(Note 1)
(Note 1)
(Note 7)
(Note 7)
(Note 7)
(Note 7)
ASQ
ASQ
(Max)
(Max)
49.995
Min
150
110
250
250
136
200
200
1.0
20
20
15
75
20
87
40
10
10
10
10
4
8
5
-
-
-
-
-
-
-
-
-
-
-
-
-
t
RON
50.005
Max
200
300
200
450
120
150
750
300
100
200
400
500
500
117
30
30
10
10
35
24
35
70
10
10
60
40
5
-
-
-
-
-
-
-
+100
-
Unit
ms
ms
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
s
s
s