IBM 1 Series Manual page 190

processor I/O channel (continued)
electrical characteristics (continued)
driver/receiver classification 2-53
receiver conditioning 2-62
switching level characteristics 2-61
unit load characteristics 2-55
unit load equivalences 2-64
voltage level characteristics 2-61 |
operational sequence 2-15
design considerations 2-39
device reset 2-46
DPC 2-19
host-initiated IPL 2-36
interrupt service 2-22
_ poll mechanism 2-42
poll sequences 2-27
power consideration 2-48
processor-initiated IPL 2-33, 2-46
receiver conditioning 2-46, 2-62
reset 2-39
tags and data strobe logic 2-40
physical characteristics 2-66
components description 2-70
sequence of plugging device attachments 2-73
signal pin and cable assignments 2-66
signal lines 2-2
poll group 2-3, 2-12
service group 2-3, 2-7
subsets 2-4
pulse
counter 3-8
duration counter 3-8
duration counting 3-6
or event counting 3-6
ready (integrated digital I/O feature line) 5-1
receive
operation 4-17
operations, types of 4-13
received character frame, format 4-11
receiver conditioning 2-46, 2-62
receivers
channel types and levels 2-50
customer DPC adapter 6-12
I/O channel classification 2-53
teletypewriter adapter 4-26
timer feature 3-10
unit load
characteristics 2-55
classifications 2-58
specifications 9-59
types 2-56
relationship to other features
customer DPC adapter 6-1
teletypewriter adapter 4-4
timer feature 3-3
repower feature, channel 1-1, 2-73
request in
bus (I/O channel) 2-12
cycle-steal 2-12
reset
power-on 2-11
sequences, description 2-39
reset (continued)
system (signal line) 2-11
resets, status after (timers) 3-9
response time
digital input 5-8
digital output 5-9
run (timer line) 3-7
select response (DPC adapter line) 6-6
sequence of plugging device attachments 2-73
sequences
cycle-steal service (use of data bus) 2-8
cycle-steal service description 2-24
DPC adapter
description 2-19
input 6-9
interrupt-service 6-10
output 6-8
read (use of data bus) 2-7
write (use of data bus) 2-7
interrupt service (use of data bus) 2-7
interrupt service description 2-22
operational, channel 2-15
poll, description 2-27
reset, description 2-39
timer, application 3-7
sequencing
logic voltage 2-66
requirements (power) 2-66
service
gate 2-9
gate return 2-9
group line definitions 2-7
group of signal lines 2-3
signal
clamping 2-65
line groups
poll 2-3
service 2-3
signal lines
considerations (timers) 2-7
DPC adapter feature 6-3
functional subsets 2-4
groups, I/O channel 2-3
processor I/O channel 2-2
basic subset 2-4
cycle-steal/IPL subset 2-6
interrupt subset 2-5
teletypewriter adapter 4-22
timer feature 3-6
signal pin assignments
DPC adapter feature 6-13
DPC adapter feature CAP connections 6-17
integrated digital I/O adapter feature 5-9
integrated digital I/O adapter feature CAP connections 5-12
processor I/O channel 2-64
teletypewriter adapter feature 4-29
teletypewriter adapter feature CAP connections 4-33
timer feature 3-11
timer feature TCC/CAP connections 3-12
socket adapter feature 1-2, 2-77
customer card 2-79
pin assignments 2-80
Index X-5