Skip to content

Latest commit

 

History

History
141 lines (127 loc) · 3.33 KB

hub75b_hat.md

File metadata and controls

141 lines (127 loc) · 3.33 KB
Raw

HUB75B "hat" hardware

Layout/numbering

Board consists of just a bunch of unnumbered connectors and 74HC245D buffers, thus all components in this document are numbered from top-left to bottom-right relative to "HUB75E" test printed on the board, as per a quick sketch below. HUB75B connectors (1-8) are counted from left to right. J600/J601 connectors are numbered as per RV901T markings. (ie. J600 being the bottom connector, near buffers 4 & 5)

 .............
1  2  3
| | | | | | | |
cap        4  5
 .............

74HC245D buffers

DIR on all buffers is strapped to VCC.

Buffer 1
A1 - A4 J601.42
A5 - A8 J601.41
B1 - B4 HUB75.8 - HUB75.1 (A; bridged in pairs of 2)
B5 - B8 HUB75.8 - HUB75.1 (B; bridged in pairs of 2)
Buffer 2
A1 - A4 J601.44
A5 - A8 J601.43
B1 - B4 HUB75.8 - HUB75.5 (CLK)
B5 - B8 HUB75.8 - HUB75.5 (STB)
Buffer 3
A1 - A8 J601.6
B1 - B8 HUB75.8 - HUB75.1 (OE)
Buffer 4
A1 - A4 J600.44
A5 - A8 J600.43
B1 - B4 HUB75.1 - HUB75.4 (CLK)
B5 - B8 HUB75.1 - HUB75.4 (STB)
Buffer 5
A1 - A4 J600.40
A5 - A8 J600.39
B1 - B4 HUB75.1 - HUB75.8 (C; bridged in pairs of 2)
B5 - B8 HUB75.1 - HUB75.8 (D; bridged in pairs of 2)

HUB75 connectors

  _________
 |  R1 G1  |
 |  B1 GND |
 |  R2 G2  |
  | B2 GND |
  |  A B   |
 |   C D   |
 | CLK STB |
 |  OE GND |
  ---------

Final pinout

Signal Breakout pins
GND J600.1,3,5,46,48,50
GND J601.1,3,5,46,48,50
VCC J600.2,4,47,49
VCC J601.2,4,49
HUB75.*.OE J601.6 (via buffer 3)
HUB75.*.A J601.42 (via buffer 1)
HUB75.*.B J601.41 (via buffer 1)
HUB75.*.C J600.40 (via buffer 5)
HUB75.*.D J600.39 (via buffer 5)
HUB75.{1..4}.CLK J600.44 (via buffer 4)
HUB75.{5..8}.CLK J601.44 (via buffer 2)
HUB75.{1..4}.STB J600.43 (via buffer 4)
HUB75.{5..8}.STB J601.43 (via buffer 2)
HUB75.8.R1 J601.38
HUB75.8.G1 J601.37
HUB75.8.B1 J601.36
HUB75.8.R2 J601.34
HUB75.8.G2 J601.33
HUB75.8.B2 J601.32
HUB75.7.R1 J601.30
HUB75.7.G1 J601.29
HUB75.7.B1 J601.28
HUB75.7.R2 J601.26
HUB75.7.G2 J601.25
HUB75.7.B2 J601.24
HUB75.6.R1 J601.22
HUB75.6.G1 J601.21
HUB75.6.B1 J601.20
HUB75.6.R2 J601.18
HUB75.6.G2 J601.17
HUB75.6.B2 J601.16
HUB75.5.R1 J601.14
HUB75.5.G1 J601.13
HUB75.5.B1 J601.12
HUB75.5.R2 J601.10
HUB75.5.G2 J601.9
HUB75.5.B2 J601.8
HUB75.4.R1 J600.38
HUB75.4.G1 J600.37
HUB75.4.B1 J600.36
HUB75.4.R2 J600.34
HUB75.4.G2 J600.33
HUB75.4.B2 J600.32
HUB75.3.R1 J600.30
HUB75.3.G1 J600.29
HUB75.3.B1 J600.28
HUB75.3.R2 J600.26
HUB75.3.G2 J600.25
HUB75.3.B2 J600.24
HUB75.2.R1 J600.22
HUB75.2.G1 J600.21
HUB75.2.B1 J600.20
HUB75.2.R2 J600.18
HUB75.2.G2 J600.17
HUB75.2.B2 J600.16
HUB75.1.R1 J600.14
HUB75.1.G1 J600.13
HUB75.1.B1 J600.12
HUB75.1.R2 J600.10
HUB75.1.G2 J600.9
HUB75.1.B2 J600.8