IBM 6400-I15 Maintenance Manual - Page 363
IBM 6400-I15 Manual
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STBY Standby STK Power Stacker SW Switch SYNC Synchronize TCB Task Control Block TEMP Temperature TOF Top of Form (first print line) TP Test Point TTL Transistor-Transistor Logic TXD Transmit Data UART Universal Asynchronous Receiver/Transmitter UDPH Upper Drive Phase UNDEF Undefined USART Universal Synchronous/Asynchronous Receiver/Transmitter V Volts VCC Voltage at Collector VDD Voltage at Drain VSS Voltage at Source VX A special ASIC containing circuits that help the DC controller operate. The letters VX do not stand for anything; they simply designate this ASIC. WR Write w With w/o Without XMT Transmit Abbreviations and Signal Mnemonics 363
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363
Abbreviations and Signal Mnemonics
STBY
Standby
. . . . . . . . . . . . . . .
STK
Power Stacker
.
. . . . . . . . . . . . . . . .
SW
Switch
. . . . . . . . . . . . . . . . .
SYNC
Synchronize
. . . . . . . . . . . . . . .
TCB
Task Control Block
.
. . . . . . . . . . . . . . . .
TEMP
Temperature
. . . . . . . . . . . . . . .
TOF
Top of Form (first print line)
.
. . . . . . . . . . . . . . . .
TP
Test Point
.
. . . . . . . . . . . . . . . . .
TTL
Transistor-Transistor Logic
.
. . . . . . . . . . . . . . . .
TXD
Transmit Data
.
. . . . . . . . . . . . . . . .
UART
Universal Asynchronous Receiver/Transmitter
.
. . . . . . . . . . . . . .
UDPH
Upper Drive Phase
.
. . . . . . . . . . . . . .
UNDEF
Undefined
. . . . . . . . . . . . . .
USART
Universal Synchronous/Asynchronous
.
. . . . . . . . . . . . .
Receiver/Transmitter
V
Volts
. . . . . . . . . . . . . . . . . . .
V
CC
Voltage at Collector
.
. . . . . . . . . . . . . . . .
V
DD
Voltage at Drain
.
. . . . . . . . . . . . . . . .
V
SS
Voltage at Source
.
. . . . . . . . . . . . . . . .
VX
A special ASIC containing circuits that help the DC
.
. . . . . . . . . . . . . . . . .
controller operate. The letters VX do not stand for
anything; they simply designate this ASIC.
WR
Write
.
. . . . . . . . . . . . . . . .
w/
With
. . . . . . . . . . . . . . . . . . .
w/o
Without
. . . . . . . . . . . . . . . . .
XMT
Transmit
. . . . . . . . . . . . . . . .