diff --git a/Chroma-Aeon-74.md b/Chroma-Aeon-74.md
index cc0d736..104e8f7 100644
--- a/Chroma-Aeon-74.md
+++ b/Chroma-Aeon-74.md
@@ -22,23 +22,23 @@ An xds110 or other cJTAG programmer is needed to program the CC1311.
 
 | Pin | Pin name | Usage | Notes |
 | - | - | - | - |
-|1|RF_P|||
-|2|RF_N|||
-|3|RF_TX|||
-|4|X32K_Q1|||
-|5|X32K_Q2|||
+|1|RF_P|antenna matching network | note 1|
+|2|RF_N|antenna matching network|note 1|
+|3|RF_TX|External LNA bias|note 1|
+|4|X32K_Q1|32786 Crystal ||
+|5|X32K_Q2|32786 Crystal||
 |6|DIO_1|EPD_CS?|EPD pin 12?|
-|7|DIO_2|||
-|8|DIO_3|||
+|7|DIO_2|n/c ?||
+|8|DIO_3|n/c ?||
 |9|DIO_4|EPD_PWR||
 |10|DIO_5|EPD_SDI?|EPD pin 14?|
 |11|DIO_6|EPD_SCLK?|EPD pin 13?|
-|12|DIO_7|||
-|13|VDDS2|||
+|12|DIO_7|n/c ?||
+|13|VDDS2|VDD||
 |14|DIO_8|UART RX (Serial in Chroma <- PC)|TP19|
 |15|DIO_9|UART TX (Serial out Chroma -> PC) |TP17|
-|16|VDDS3|||
-|17|DCOUPL|||
+|16|VDDS3|VDD||
+|17|DCOUPL|Cap||
 |18|JTAG_TSMC|cJTAG Data|TP13|
 |19|JTAG_TCKC|cJTAG Clock|TP15|
 |20|DIO_10|EPD_RST?|EPD pin 10?|
@@ -59,6 +59,9 @@ An xds110 or other cJTAG programmer is needed to program the CC1311.
 |35|DIO_22|||
 |36|VDDS|||
 |37|VDDR|||
-|38|X48M_N|||
-|39|X48M_P|||
+|38|X48M_N|48 Mhz crystal||
+|39|X48M_P|48 Mhz crystal||
 |40|VDDR_RF|||
+
+Notes:
+1. i.e. "External Bias, Differential mode.