AM7968 AMD [Advanced Micro Devices], AM7968 Datasheet - Page 111

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

TAXI Technical Information Publication #89-12
Subject: TAXlchip Pins Internal Circuit
Question:
What do the TAXIchip I/O circuits look like?
Answer:
There are five different input circuits and two different output circuits in the TAXIchip set.
Each I/O circuit has Electro Static Discharge (ESD) protection circuit attached to it.
The five input types are: TTL Input, ECL Input, Three State Input (TSI), High Threshold
Input (HTI), and Oscillator (OSC).
The two output types are: TTL Output and ECL Output.
Each I/O circuit and the ESD circuit are shown on the following page. The following
table lists all Transmitter and Receiver pins and their I/O type.
Transmitter
Pin
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
Pin Name
ACK
STRB
SEROUT+
SEROUT–
V
V
V
RESET
DMS
CLS
SERIN
CI0
CI1
DI9/CI2
DI8/CI3
DI7
DI6
CLK
X2
X1
GND2
GND1
DI0
DI1
DI2
DI3
DI4
DI5
CC2
CC1
CC3
TAXIchip Integrated Circuits Technical Manual
I/O Type
TTL OUT
TTL IN
ECL OUT
ECL OUT
5 V
5 V
5 V
HTI
TSI
TSI
ECL IN
TTL IN
TTL IN
TTL IN
TTL IN
TTL IN
TTL IN
TTL OUT
OSC
OSC
GND
GND
TTL IN
TTL IN
TTL IN
TTL IN
TTL IN
TTL IN
Pin
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
Receiver
Pin Name
DO3
DO2
DO1
DO0
IGM
RESET
V
V
SERIN+
SERIN–
DMS
DSTRB
CSTRB
VLTN
CO0
CO1
DO9/CO2
DO8/CO3
CLK
GND1
GND2
X1
X2
CNB
DO7
DO6
DO5
DO4
CC1
CC2
I/O Type
TTL OUT
TTL OUT
TTL OUT
TTL OUT
TTL OUT
HTI
5 V
5 V
ECL IN
ECL IN
TSI
TTL OUT
TTL OUT
TTL OUT
TTL OUT
TTL OUT
TTL OUT
TTL OUT
TTL OUT
GND
GND
OSC
OSC
TTL IN
TTL OUT
TTL OUT
TTL OUT
TTL OUT
AMD
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