dp8344b National Semiconductor Corporation, dp8344b Datasheet - Page 93

• Manufacturer Part Number: dp8344b
• Description: Biphase Communications Processor?bcp
• Manufacturer: National Semiconductor Corporation

5 1 1 TIMING CONTROL SIGNALS
5 1 2 INSTRUCTION MEMORY INTERFACE
Instruction Address Bus
X1
X2
CLK-OUT
X-TCLK
WAIT
RESET
IA15 (MSB)
IA14
IA13
IA12
IA11
IA10
5 0 Device Specifications
5 1 PIN DESCRIPTIONS
Signal
In Out
Out
Out
Out
Out
Out
Out
Out
Out
In
In
In
In
Pin
33
34
35
32
54
55
58
59
60
61
62
63
Reset
State
X1
X1
X
X
X
0
0
0
0
0
0
0
See NS Package Number V84A
Input and output of the on-chip crystal oscillator amplifier Connect a crystal
across these pins or apply an external clock to X1 with X2 left open
Buffered CLocK oscillator OUTput at the crystal frequency
EXternal Transceiver CLocK input
CPU WAIT When active waits processor and remote interface controller
Master RESET Parallel reset to all sections of the chip
16-bit Instruction memory Address bus
Order Number DP8344B
FIGURE 5-1 Top View
Plastic Chip Carrier
93
Description
TL F 9336 – 2