From e565ca6b823c0d749698994cbffdf9b25dad25d4 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Robert=20J=C3=B6rdens?= Date: Fri, 9 Nov 2018 13:21:18 +0100 Subject: [PATCH] urukul: slow down att write to datasheet limit MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Robert Jördens --- artiq/coredevice/urukul.py | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/artiq/coredevice/urukul.py b/artiq/coredevice/urukul.py index b37590e1a..6605d852b 100644 --- a/artiq/coredevice/urukul.py +++ b/artiq/coredevice/urukul.py @@ -14,7 +14,8 @@ SPI_CONFIG = (0*spi.SPI_OFFLINE | 0*spi.SPI_END | # SPI clock write and read dividers SPIT_CFG_WR = 2 SPIT_CFG_RD = 16 -SPIT_ATT_WR = 2 +# 30 MHz fmax, 20 ns setup, 40 ns shift to latch (limiting) +SPIT_ATT_WR = 6 SPIT_ATT_RD = 16 SPIT_DDS_WR = 2 SPIT_DDS_RD = 16