AM7968 AMD [Advanced Micro Devices], AM7968 Datasheet - Page 28

• Manufacturer Part Number: AM7968
• Description: TAXIchip Integrated Circuits(Transparent Asynchronous Xmitter-Receiver Interface)
• Manufacturer: AMD [Advanced Micro Devices]

SWITCHING CHARACTERISTICS (Note 20)
Am7968-125 TAXIchip Transmitter (Notes 10, 13, 22)
24
Bus Interface Signals: DI0–DI7, DI8/CI3, DI9/CI2, CI0–CI1, STRB, ACK, CLK
Serial Interface Signals: SEROUT+, SEROUT– (Note 2)
Miscellaneous Signals: X1 (Note 15)
No.
14
10
11
12
13
15
22
23
24
26
27
29
30
32
33
1
2
3
4
5
6
9
AMD
Parameter
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
P
PW
PW
PW
PW
BB
S
H
H
H
PD
PD
PD
SK
R
F
PW
PW
PW
PW
PD
PD
Parameter Description
CLK Period
CLK Pulse Width HIGH
CLK Pulse Width LOW
STRB Pulse Width HIGH (Note 7)
STRB Pulse Width LOW
Internal Byte Boundary to CLK
(Note 11)
Data–STRB Setup Time
Data–STRB Hold Time
ACK to STRB Hold (Note 8)
ACK to STRB Hold
STRB to ACK (Note 18)
STRB to ACK
CLK to ACK (Note 18)
SEROUT Skew
SEROUT Output Rise Time
SEROUT Output Fall Time
SEROUT
SEROUT
X1 Pulse Width HIGH (Note 12)
X1 Pulse Width LOW (Note 12)
X1
X1
to CLK
to CLK
Pulse Width LOW
Pulse Width HIGH
Am7968/Am7969-125
Test Conditions
TTL Output Load
TTL Output Load
TTL Output Load
TTL Output Load
TTL Output Load
ECL Output Load
ECL Output Load
ECL Output Load
ECL Output Load
ECL Output Load
TTL Output Load on CLK
TTL Output Load on CLK
TTL Load
TTL Load
–9t
t
t
n – 5%
n – 5%
8n +9
1
1
–200
Min
.45
.45
8n
30
30
15
15
15
35
35
1
5
0
0
3t
t
t
n + 5%
n + 5%
1
1
n + 33
+200
Max
25n
1
20
40
23
32
32
2
2
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ps
ns
ns
ns
ns
ns
ns
ns
ns