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authorWerner Almesberger <werner@almesberger.net>2016-11-29 16:07:55 -0300
committerGenerated from internal repo <nobody@neo900.org>2016-11-29 16:07:55 -0300
commit43760042cf0bfb4e19dceec822b9fd00cbf63e81 (patch)
tree750dcace23df619724375ca3a5c324a95fcbf9f1 /hw/bbdisp.sch
parent1ebd28f1331ac8a5162850fdff48f9b825f1fb38 (diff)
downloadee-43760042cf0bfb4e19dceec822b9fd00cbf63e81.tar.gz
ee-43760042cf0bfb4e19dceec822b9fd00cbf63e81.tar.bz2
ee-43760042cf0bfb4e19dceec822b9fd00cbf63e81.zip
bbcpu.sch, bbdisp.sch: add pull-ups for I2C
I2C#2 has DNP ("DNI") pull-ups on BB-xM, so we may as well add them on v2. I2C#3 has 10 kOhm pull-ups on BB-xM, inside U12, so we make them DNP on the v2 side but have them "just in case" (space is cheap on the v2-BB-xM interface). Suggested by Ana Martin Ayuso.
Diffstat (limited to 'hw/bbdisp.sch')
-rw-r--r--hw/bbdisp.sch62
1 files changed, 58 insertions, 4 deletions
diff --git a/hw/bbdisp.sch b/hw/bbdisp.sch
index 8475fb7..1ea139e 100644
--- a/hw/bbdisp.sch
+++ b/hw/bbdisp.sch
@@ -131,18 +131,20 @@ Text Notes 7200 5400 0 120 ~ 0
P13 (7.25)
Text GLabel 6800 7600 0 60 Output ~ 0
BB_1V8
-Text GLabel 11200 2700 2 60 BiDi ~ 0
+Text GLabel 14300 2700 2 60 BiDi ~ 0
I2C3_SDA_U
-Text GLabel 6800 6400 0 60 BiDi ~ 0
+Text GLabel 5400 6400 0 60 BiDi ~ 0
I2C3_SCL_U
Wire Wire Line
11000 5800 11200 5800
Wire Wire Line
6800 5800 7000 5800
Wire Wire Line
- 7000 6400 6800 6400
+ 7000 6400 5400 6400
Wire Wire Line
- 11200 2700 11000 2700
+ 14300 2700 13900 2700
+Wire Wire Line
+ 13900 2700 11000 2700
NoConn ~ 7000 2500
NoConn ~ 7000 6600
Wire Wire Line
@@ -321,4 +323,56 @@ Text Notes 10800 4350 2 60 ~ 0
852-10-020-10-001000
Text Notes 10800 7850 2 60 ~ 0
852-10-020-10-001000
+$Comp
+L R R?
+U 1 1 583DFDD0
+P 13900 2400
+AR Path="/578AFF0C/583DFDD0" Ref="R?" Part="1"
+AR Path="/578AFF12/583DFDD0" Ref="R?" Part="1"
+AR Path="/578AFF32/583DFDD0" Ref="R?" Part="1"
+AR Path="/578AFF34/583DFDD0" Ref="R2402" Part="1"
+F 0 "R2402" V 13850 2500 50 0000 L CNN
+F 1 "10k" H 13900 2400 50 0000 C CNN
+F 2 "SMD-0402" H 13930 2550 20 0001 C CNN
+F 3 "" H 13900 2400 60 0001 C CNN
+ 1 13900 2400
+ 0 1 1 0
+$EndComp
+Text GLabel 13800 2100 0 60 Input ~ 0
+1V8_U
+Wire Wire Line
+ 13800 2100 13900 2100
+Wire Wire Line
+ 13900 2100 13900 2200
+Wire Wire Line
+ 13900 2600 13900 2700
+Connection ~ 13900 2700
+Text Notes 14000 2500 0 60 ~ 0
+DNP
+$Comp
+L R R?
+U 1 1 583E0062
+P 5600 6100
+AR Path="/578AFF0C/583E0062" Ref="R?" Part="1"
+AR Path="/578AFF12/583E0062" Ref="R?" Part="1"
+AR Path="/578AFF32/583E0062" Ref="R?" Part="1"
+AR Path="/578AFF34/583E0062" Ref="R2401" Part="1"
+F 0 "R2401" V 5550 6200 50 0000 L CNN
+F 1 "10k" H 5600 6100 50 0000 C CNN
+F 2 "SMD-0402" H 5630 6250 20 0001 C CNN
+F 3 "" H 5600 6100 60 0001 C CNN
+ 1 5600 6100
+ 0 1 1 0
+$EndComp
+Text GLabel 5500 5800 0 60 Input ~ 0
+1V8_U
+Wire Wire Line
+ 5500 5800 5600 5800
+Wire Wire Line
+ 5600 5800 5600 5900
+Wire Wire Line
+ 5600 6300 5600 6400
+Text Notes 5700 6200 0 60 ~ 0
+DNP
+Connection ~ 5600 6400
$EndSCHEMATC