From 614ce7a7d83798109d90f6997696212387900526 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?K=C3=A9vin=20Redon?= Date: Tue, 3 Sep 2019 20:33:48 +0200 Subject: schematic: mark R19 as dot no place R19 pulls VCC_PHONE low for better power on detection. but the voltage divider R20 + R21 also pull this line low using a stronger pull down resistor ok 20 kOhm. thus R19 is unnecessary- this change has been tested with a real simtrace device. trace and card emulation worked with a Nokia 3310. Change-Id: I0dd2025a8634f0ec38060cfbaae68618a4198fca --- hardware/kicad/SIMtrace.sch | 2 ++ hardware/pcb/schema/SIMtrace.pdf | Bin 121415 -> 121547 bytes 2 files changed, 2 insertions(+) (limited to 'hardware') diff --git a/hardware/kicad/SIMtrace.sch b/hardware/kicad/SIMtrace.sch index 1ed2d15..e06df55 100644 --- a/hardware/kicad/SIMtrace.sch +++ b/hardware/kicad/SIMtrace.sch @@ -321,6 +321,8 @@ F 0 "R19" H 9300 6100 50 0000 C CNN F 1 "100K" H 9300 6000 50 0000 C CNN F 2 "SM0603" H 9450 6000 60 0001 C CNN F 3 "" H 9450 6000 60 0001 C CNN +F 4 "DNP" H 9300 5900 50 0000 C CNN "Place" +F 5 "R20 and R21 already pull VCC_PHONE low" H 9450 6000 50 0001 C CNN "Note" 1 9450 6000 1 0 0 -1 $EndComp diff --git a/hardware/pcb/schema/SIMtrace.pdf b/hardware/pcb/schema/SIMtrace.pdf index f499167..bad3673 100644 Binary files a/hardware/pcb/schema/SIMtrace.pdf and b/hardware/pcb/schema/SIMtrace.pdf differ -- cgit v1.2.3