AM7968 AMD [Advanced Micro Devices], AM7968 Datasheet - Page 110

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

Figure 12
Figure 13
106
AMD
X1
X2
Note : All crystals used are of same type.
Transmitter
Notes:
1. Filter components were chosen for the following loop parameters:
2. Refer to Motorola MC4024, MC4044 and National LMC660C data sheets for specifications.
SERIN +
SERIN –
X1
X2
SEROUT +
SEROUT -
Am7968
Receiver
Am7969
TAXI
Noise Bandwidth = 10 kHz
Damping Factor = 0.5
Natural Frequency = 3.18 kHz
CLK
CLK
CLK
Crystal Filter
PLL Filter
GND
SERIN +
SERIN -
X1
X2
V
R
GND
MC4044
Receiver
Am7969
+5 V
V
GND
CC
TAXIchip Integrated Circuits Technical Manual
U1
D1
GND
CLK
4.7K
1 F
4.7K
15K
15K
4 pF
300
300
Crystal Filter
15K
15K
1 F
300
50
300
2
3
GND
4 5 6
-
+
LMC660C
LT1016
+
-
50
V+
V-
+5 V
1
GND
1 F
50 pF
7
GND
X1
X2
Transmitter
SEROUT +
SEROUT -
VCX2
CX2
Am7968
V
MC4024
CC
GND
OUT 2
VCM2
CLK
X1
X2
Transmitter
SERIN +
SERIN -
X1
X2
SEROUT +
SEROUT –
Am7968
TAXI
Receiver
Am7969
12330E-42
CLK
12330E-41
CLK