Difference between revisions of "Circuit Diagrams"

From SpecNext official Wiki
Jump to: navigation, search
 
(33 intermediate revisions by 5 users not shown)
Line 1: Line 1:
 +
== Schematics ==
  
−
== J13 - Daughter board connector ==
+
The KS1 and KS2 schematics can be downloaded [https://gitlab.com/thesmog358/tbblue/-/tree/master/docs/schematics?inline=false here].
 +
 
 +
The three tail matrix keyboard schematic can be downloaded [https://github.com/Threetwosevensixseven/NXtel/wiki/images/NS58A-5-01-04.pdf here].
 +
 
 +
== J13 - Daughter board connector - Issue 2A/2B ==
  
 
{| width=100%
 
{| width=100%
Line 9: Line 14:
 
<br/>
 
<br/>
  
−
== J15 - Next GPIO ==
+
== J13 - Daughter board connector - Issue 4 ==
 +
 
 +
{| width=100%
 +
|valign=top width=50%| [[Image:J13-I4-DaughterLocation.png]]
 +
|valign=top width=25%| [[Image:J13-I4-CircuitDaughterBoard.png]]
 +
|}
 +
 
 +
<br/>
 +
 
 +
== J15 - Next GPIO - Issue 2A/2B ==
  
 
{| width=100%
 
{| width=100%
 
|valign=top width=50%| [[Image:NEXT_GPIO_location.jpg]]
 
|valign=top width=50%| [[Image:NEXT_GPIO_location.jpg]]
 
|valign=top width=50%| [[Image:NEXT_GPIO.png|461px]]
 
|valign=top width=50%| [[Image:NEXT_GPIO.png|461px]]
 +
|}
 +
 +
<br/>
 +
 +
== J15 - Next GPIO - Issue 4 ==
 +
 +
{| width=100%
 +
|valign=top width=40%| [[Image:J15-I4-GPIOLocation.png]]
 +
|valign=top| [[Image:J15-I4-CircuitGPIO.png]]
 
|}
 
|}
  
Line 45: Line 68:
 
<br/>
 
<br/>
  
−
== CN1 - Video ==
+
== CN1 - VGA Video Port ==
  
 
{| width=100%
 
{| width=100%
 
|valign=top width=50%| [[Image:Video_Port_Location.jpg]]
 
|valign=top width=50%| [[Image:Video_Port_Location.jpg]]
 
|valign=top| [[Image:Video_Port.png]]
 
|valign=top| [[Image:Video_Port.png]]
 +
|}
 +
 +
Notes:
 +
* In VGA mode (scandoubler enabled), H-SYNC and V-SYNC are carried separately on their respective pins.
 +
* In RGB mode (scandoubler disabled), H-SYNC carries composite sync, and V-SYNC carries 1.
 +
* Pin 14 carries 3V3, which can be connected to SCART pin 16 to indicate RGB to the display.
 +
* There is no convenient source of voltages between 9.5-12V to indicate 4:3 aspect ratio to the display on SCART pin 8, so this is usually left unconnected.
 +
 +
<br/>
 +
 +
== CN8 - Digital Port ==
 +
 +
{| width=100%
 +
|valign=top width=50%|[[Image:Digital Port Location.jpg]]
 +
|valign=top| [[Image:Next Digital Port.png]]
 +
|}
 +
 +
<br/>
 +
 +
== CN2/CN6/CN7 - SD Reader (Mainboard) (CN6 on reverse) ==
 +
 +
{| width=100%
 +
|valign=top width=50%| [[Image:SD_Reader_Port_Location.jpg]]
 +
|valign=top| [[Image:SD_Reader_Main.png]]
 +
|}
 +
 +
<br/>
 +
 +
== CN10/CN11/CN12 - SD Reader (Daughterboard) (CN12 on reverse) ==
 +
 +
{| width=100%
 +
|valign=top width=50%| [[Image:SD_Reader_Daughter_Port_Location.jpg]]
 +
|valign=top| [[Image:SD_Reader.png]]
 +
|}
 +
 +
<br/>
 +
 +
== Accelerator Board ==
 +
 +
{| width=100%
 +
|valign=top width=50%| [[Image:Accelerator_Port_Location.jpg]]
 +
|valign=top| [[Image:Accelerator_Port.png]]
 
|}
 
|}
  
 
<br/>
 
<br/>
  
−
== CN8 - HDMI Port
+
== Real Time Clock (RTC) ==
 +
 
 +
{| width=100%
 +
|valign=top width=50%| [[Image:RTC_Port_Location.jpg]]
 +
|valign=top| [[Image:RTC_Port.png]]
 +
|}
 +
 
 +
<br/>
  
 +
== CN9 - ESP8266-01/RS-232 Port ==
 
{| width=100%
 
{| width=100%
−
|valign=top width=50%| [[Image:HDMI_Port_Location.jpg]]
+
|valign=top width=50%| [[Image:Wifi_Port_Location.jpg]]
−
|valign=top| [[Image:HDMI_Port.png]]
+
|valign=top| [[Image:Next_ESP_Port.png]]
 
|}
 
|}
  
 
<br/>
 
<br/>

Latest revision as of 11:04, 10 December 2023

Schematics

The KS1 and KS2 schematics can be downloaded here.

The three tail matrix keyboard schematic can be downloaded here.

J13 - Daughter board connector - Issue 2A/2B

DaughterLocation.jpg Circuit daughter board.png


J13 - Daughter board connector - Issue 4

J13-I4-DaughterLocation.png J13-I4-CircuitDaughterBoard.png


J15 - Next GPIO - Issue 2A/2B

NEXT GPIO location.jpg NEXT GPIO.png


J15 - Next GPIO - Issue 4

J15-I4-GPIOLocation.png J15-I4-CircuitGPIO.png


CN5 - Expansion bus (edge connector)

Expansion bus location.jpg Expansion bus.png


J10/J11 - Memory Expansion Ports

Mem Expansion location.jpg Mem Expansion.png


J4/J7 J8/J14 - Joystick Ports

Joystick Ports Location.jpg Joystick Ports.png


CN1 - VGA Video Port

Video Port Location.jpg Video Port.png

Notes:

  • In VGA mode (scandoubler enabled), H-SYNC and V-SYNC are carried separately on their respective pins.
  • In RGB mode (scandoubler disabled), H-SYNC carries composite sync, and V-SYNC carries 1.
  • Pin 14 carries 3V3, which can be connected to SCART pin 16 to indicate RGB to the display.
  • There is no convenient source of voltages between 9.5-12V to indicate 4:3 aspect ratio to the display on SCART pin 8, so this is usually left unconnected.


CN8 - Digital Port

Digital Port Location.jpg Next Digital Port.png


CN2/CN6/CN7 - SD Reader (Mainboard) (CN6 on reverse)

SD Reader Port Location.jpg SD Reader Main.png


CN10/CN11/CN12 - SD Reader (Daughterboard) (CN12 on reverse)

SD Reader Daughter Port Location.jpg SD Reader.png


Accelerator Board

Accelerator Port Location.jpg Accelerator Port.png


Real Time Clock (RTC)

RTC Port Location.jpg RTC Port.png


CN9 - ESP8266-01/RS-232 Port

Wifi Port Location.jpg Next ESP Port.png


Retrieved from ‘http://wiki.specnext.dev/index.php?title=Circuit_Diagrams&oldid=11897’