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#5 crossbar MDT design notes

-*- org -*-

apparatus used

• using scan/distribute matrix
• not using the procon
• not using the rest of it either

interface to s/d matrix

• 4 static name leads (procon -> sd)
  • wired-logic, no need
• 4 address leads (procon -> sd)
• 16 data leads (procon <-> sd)
  • 012345 are bidir (procon <-> sd)
  • 6789 can be in-only (procon <- sd)
  • abcdef no connection
• 1 control lead (procon -> sd)
  • 0 for read from scan points
    • read is 4b address x 10b wide
    • 160 bits in the field
  • 1 for write to distribute points
    • write is 2b address x 6b wide
    • 24 bits in the field
  • bit assignments are in SD-28111-01-B2
• 1 master strobe lead (procon -> sd)
• 1 slave strobe-confirm lead (sd -> procon)
  • optional in this application, i suppose
• in sum
  • 4 address leads
  • 10 data leads (that matter)
  • 2 control leads
  • total: 16 leads
    • 6 out-only
    • 4 in-only
    • 6 bidir
• gpio assignments

  gpio	dir	function	conn term	color
  13	procon->	a1	23	blue-bk
  15	procon->	a2	11	orange-bk
  14	procon->	a3	21	green-bk
  18	procon->	a4	9	brown-bk
  19	procon->	C1 = rdwr	15	slate-bk
  21	procon->	MSYN	63	white-bk
  22	<-procon	SSYN	39	red-bk
  23	<-procon->	d00	71	blue
  25	<-procon->	d01	59	orange
  26	<-procon->	d02	47	green
  27	<-procon->	d03	35	brown
  32	<-procon->	d04	69	slate
  33	<-procon->	d05	57	white
  34	<-procon	d06	45	red
  35	<-procon	d07	33	black
  4	<-procon	d08	67	yellow
  5	<-procon	d09	55	violet
  gnd	—	ground	4	violet-bk
  Vin	—	power	6?	yellow-bk
  15
  2

volts

• esp32 output: 3v3
• esp32 input: 3v3,
• s/d bus: (cd-94851-01 page 3, sec. 2.02)
  • 1: 0v0 - 0v4
  • 0: 3v0 - 3v8
• hah holy crap no level shifters needed nice

named scan and dist pts

• [addr]:bit
• dist
  • STR [02]:5 start
  • STRA [02]:4 start auxiliary (test call)
  • ARLK [02]:3 automatic reset lock
  • CMN [02]:2 minor alarm
  • CMJ [02]:1 major alarm
  • MB [02]:0 make busy
  • TRC [01]:5 trouble record complete
• scan
  • STR [00]:9 start
  • STRA1 [00]:8 start auxiliary (test call)
  • SPL [01]:9 special (test card)
  • TRC [01]:8 trouble record complete
  • MB [02]:9 make busy
  • ROS [02]:8 recorder out of service
  • BWX0 [03]:1
  • BWX1 [03]:0
  • BWX2 [013]:3
  • BWX3 [013]:2

CMJ DP is [02]:1 CMN DP is [02]:2

program outline

• routines
  • read-row
  • write-row
  • read-all
  • read-relay-row
    • close distribute point S-
    • wait 32ms
    • read all trouble card scan points
    • open distribute point S-
    • wait a moment?
  • read-full-card
    • read-relay-row 8 thru 0
    • nine rows total
• init routine (ref SD-28111-01-E1, SC 1 )
  • write appropriate thing to MB dist pt to clear the initial busy condition
• basic operation cycle (ref SD-28111-01-E1, SC 2 )
  • read STR and STRA scan pts continuously
    • address 0, bits 8 and 9
    • wait for bit set
  • read-full-card
  • do something with that data
    • post to somewhere?
  • close dist pt TRC
  • wait for open scan pt STR or STRA
  • wait 0.5s
  • open dist pt TRC

drawings

ED-27879-30

• bus terminator drawing
• connector pinout drawing
• KS-19162, L17 plug

ED-27907-10

• mdt connectorized switchboard cable assembly and connecting information
• db25 stuff

J-23252-CR // MDT design

• scan this one!

J-99366-G // 16x16 scanner matrix unit (SD-94838-01)

J-99366-H // 4x16 distributor matrix unit (SD-94839-01)

J-99366-J // 10x16 scanner + 4x6 distributor matrix unit || drawing missing

J-99379-A // procon? for 1xb mdt (SD-94844-01)

• psd A: assembly, equipment, and wiring

J-99379-AA // (SD-94844-01)

• psd controller: assembly, equipment, and wiring
• combo unit logic

J-1C082-B-2 // PROCON

test plan for <2019-10-08 Tue>

localize the problem with not being able to distribute bits

• set the commands to write CLOSED to CMJ DP [02]:1
  • cmj: [2]:1 -> (DM0) eql 28 -> D conn #12 -> D201A -> CMJ 1L
  • cmj ground is on -> D conn #37
  • cmn: [2]:2 -> (DM1) eql 30 -> D conn #11 -> D202A -> CMN 1U
• known bus elements
  • bit 1
  • row 2 (0010)
  • d0 f (hi)
    • 0-1d0 (dm0 pin 5)
    • 0-en1 (dm0 pin 4)
  • d1 true (lo)
    • 0-0d1 (dm0 pin 2)
    • 0-en0 (dm0 pin 1)
  • d2 f
  • d3 f
  • d4 f
  • d5 f
  • a1 f
  • a2 true
  • a3 f
  • a4 f
• overthinking it
  • this should be on DM0 lead “D201A”
  • pin 25, DA21
  • relay 5 on the card is active
  • ic4 pin 13 output is high
  • ic2 pin 15 output is low
  • pins into the card that should bring this about
    • en0 (1) false (hi)

• tied externally to
• 0d1 (2)
  • en1 (4) asserted (lo)
• tied externally to
• 1d0 (5)
  • clk2 (8) pulsed (hi-lo-hi)
  • 1d0 (5) false (hi)
  • 1d1 (3) asserted (lo)
  • test plan pins for A1074 eql 28
    • [X] 1d1 3 - lo (yes, wired to ground)
      • run 263
    • [X] 0d0 0 - lo (yes, wired to ground)
      • run 263

1. 28/0
2. 28/3
3. 28/10
4. grd/28
   • [X] en0 1 - lo (wired to d1)
   • [X] 0d1 2 - lo (tied to en0)
     • run 230
5. in/59
6. out/59
7. 18/9
8. 28/1
9. 28/2
   • [ ] en1 4 - hi (wired to d0)
   • [ ] 1d0 5 - hi (tied to en1)
     • run 225
10. in/71
11. out/71
12. 17/9
13. 28/4 (dm0-en1)
14. 28/5 (dm0-1d0)
    • [ ] clk3 8 - pulse hi-lo-hi
      • run 246
15. 16/2
16. 28/8 (dm0-clk3)
17. 30/8 (dm1-clk3)
18. 32/8 (dm2-clk3)
    • table of infos

      • lead	expect	find
        0	lo	lo
        1	lo	lo
        2	lo	lo
        3	lo	lo
        4	hi	lo
        5	hi	lo
        6		hi
        7		hi
        8		hi
        9		hi

      • what
    • thinkins
      • !(1d0 & en1) = !(f & t) = !(f) = true [ic2-ffA]
      • !(1d1 & en1) = !(t & t) = !(t) = false [ic2-ffB]
      • yep this makes sense
    • test plan pins for A1075
      • a3 - 4 - hi
        • run 215
19. in/21
20. out/21
21. 16/4
    • c1 - 5 - ?
      • run 218
22. in/15
23. out/15
24. 16/5
    • a1 - 7 - hi
      • run 214
25. in/23
26. out/23
27. 16/7
    • a2 - 8 - lo
      • run 219
28. in/11
29. out/11
30. 16/8
    • a4 - 9 - hi
      • run 220
31. in/9
32. out/9
33. 16/9

gpio.config({gpio = 25, dir = gpio.IN_OUT, opendrain = 1, pull = gpio.FLOATING}) print(gpio.read(25))