Toshiba TLP411E, Техническое учебное пособие

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5-7
7. STATUS READ PROCESS
In the status read process, two data fetch ICs, QL11, QL12
(MC74HC165AF) as shown in Fig. 5-1, read the status.
Fig. 5-6 shows a data fetch timing diagram.
QL11 reads panel key status and QL12 does various status.
Table 5-2 shows the contents of the status read signals and
the logic.
Fig. 5-6 Data fetch timing diagram
Table 5-2 Contents of the status read signals and the logic
KEY1 - KEY8
A, B, C, D, E, F, G, H
STL
STC
STD ? H G E F D C B A ?
Table 5-3 Contents of the status display signals and the logic
8. STATUS DISPLAY PROCESS
In the status display process, a status display IC QL10
(MC74HC595AF) shown in Fig. 5-1 displays the status.
Fig. 5-7 shows the data display timing diagram.
Table 5-3 shows the contents of the status display signals
and the logic.
SWL
SWC
SWD
H G F E D C B A
Fig. 5-7 Data display timing diagram
Signal
name
A B C D E F G H
Pin No. 11 12 13 14 3 4 5 6
QL11
ON/
STANDBY
MENU
( DOWN )
MENU
( UP )
VOL/ADJ( - ) VOL/ADJ (+)
INPUT AUX1 AUX2
(L) ON ON ON ON ON ON ON ON
(H) OFF OFF OFF OFF OFF OFF OFF OFF
QL12 FAN1. ER FAN1. SW FAN2. ER MAIN. ER LAMP. ER FAN. ER TEMP. ER CAMON
(L) Abnormal Normal Abnormal Abnormal Abnormal Abnormal Normal Camera Yes
(H) Normal Abnormal Normal Normal Normal Normal Abnormal Camera Yes
Signal name QA QB QC QD QE QF QG QH
Pin No. 15 1 2 3 4 5 6 7
QL10
ON
(red)
ON
(green)
LAMP
(red)
LAMP (green)
TEMP
(red)
TEMP
(green)
FAN. PW LAMP. PW
(L) LED off LED off LED off LED off LED off LED off OFF OFF
(H) LED on LED on LED on LED on LED on LED on ON ON