docs: Adding basic values for capacitance + resistance.

Values taken from the following Google Spreadsheet
[SKY130 Stackup Capacitance Data" spreadsheet](https://docs.google.com/spreadsheets/d/1N9To-xTiA7FLfQ1SNzWKe-wMckFEXVE9WPkPPjYkaxE/edit#gid=226894802)

Signed-off-by: Tim 'mithro' Ansell <me@mith.ro>

docs/rules/rcx.rst

@@ -8,9 +8,10 @@ The modeled columns indicate sheets and contacts that are parasitic resistance/c
 The CAD columns indicate sheets and contacts that are parasitics included in the schematic/layout RCX from Assura.
 
 .. csv-table:: Parasitic Extraction Table
-   :file: rcx/rcx-all.csv
+   :file: rcx/rcx-all.tsv
    :header-rows: 2
    :stub-columns: 1
+   :delim: U+0009
 
 
 .. note:: The models includes M1/M2 capacitance. As a result of RCX extraction limitation M1/M2 routing over the varactor will have no capacitance extraction.
@@ -33,10 +34,21 @@ Resistance Rules
 .. todo:: This table should be rendered like the periphery rules.
 
 .. csv-table:: Table of resistance rules
-   :file: rcx/resistance.csv
-   :header-rows: 2
+   :file: rcx/resistance-rules.csv
    :stub-columns: 1
 
+Resistance Values
+-----------------
+
+This section includes tables of basic resistance values for SKY130.
+
+Further data can be found in the `"SKY130 Stackup Capacitance Data" spreadsheet`_.
+
+.. csv-table:: Table - Resistances
+   :file: rcx/resistance-values.tsv
+   :header-rows: 1
+   :delim: U+0009
+
 
 Capacitance Rules
 -----------------
@@ -44,9 +56,57 @@ Capacitance Rules
 .. todo:: This table should be rendered like the periphery rules.
 
 .. csv-table:: Table of capacitance rules
-   :file: rcx/capacitance.csv
-   :header-rows: 2
+   :file: rcx/capacitance-rules.csv
    :stub-columns: 1
+   :delim: U+0009
+
+
+Capacitance Values
+------------------
+
+This section includes tables of basic capacitance values for SKY130.
+
+Further data can be found in the `"SKY130 Stackup Capacitance Data" spreadsheet`_.
+
+.. _"SKY130 Stackup Capacitance Data" spreadsheet: https://docs.google.com/spreadsheets/d/1N9To-xTiA7FLfQ1SNzWKe-wMckFEXVE9WPkPPjYkaxE/edit#gid=226894802
+
+Basic Capacitance - Fringe Downward
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Fringe capacitances are a constant value per unit length and are an approximations. Determined by creating a layout with a 5um x 10um rectangle of each layer over or under a much larger rectangle of the other layer. The fringe capacitance computed from the total given minus the parallel plate capacitance.
+
+"downward direction" means that the larger plate is below the 5um x 10um plate.
+
+The layer in the first column is always the layer with the 5um x 10um plate.
+
+.. csv-table:: Table - Capacitance - Fringe Downward
+   :file: rcx/capacitance-fringe-downward.tsv
+   :header-rows: 1
+   :delim: U+0009
+
+
+Basic Capacitance - Fringe Upward
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Fringe capacitances are a constant value per unit length and are an approximations. Determined by creating a layout with a 5um x 10um rectangle of each layer over or under a much larger rectangle of the other layer. The fringe capacitance computed from the total given minus the parallel plate capacitance.
+
+"upward direction" means that the larger plate is above the 5um x 10um plate.
+
+The layer in the first column is always the layer with the 5um x 10um plate.
+
+.. csv-table:: Table - Capacitance - Fringe Upward
+   :file: rcx/capacitance-fringe-upward.tsv
+   :header-rows: 1
+   :delim: U+0009
+
+
+Basic Capacitance - Parallel
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. csv-table:: Table - Capacitance - Parallel
+   :file: rcx/capacitance-parallel.tsv
+   :header-rows: 1
+   :delim: U+0009
 
 
 Discrepencies
@@ -62,3 +122,4 @@ Un-shielded VPP's
 
   The impact of this on total capacitance and parasitic capacitance is already comprehended in the model corners, however, cross-talk is not modeled. Also, parasitic cap is routed to ground and this may not be ideal for the scenario.
   The parasitic cap can be estimated using RescapWeb.
+

docs/rules/rcx/capacitance-fringe-downward.tsv

@@ -0,0 +1,7 @@
+Interlayer fringe capacitance (downward direction) (aF/um)	Poly	Local interconnect	Metal1	Metal2	Metal3	Metal4
+Local interconnect	51.846					
+Metal1	46.724	59.496				
+Metal2	41.222	46.277	67.045			
+Metal3	43.531	46.708	54.814	69.846		
+Metal4	38.105	39.709	42.563	46.382	70.522	
+Metal5	39.908	41.147	43.188	45.592	54.152	82.819

docs/rules/rcx/capacitance-fringe-upward.tsv

@@ -0,0 +1,7 @@
+Interlayer fringe capacitance (upward direction) (aF/um)	Local interconnect	Metal1	Metal2	Metal3	Metal4	Metal5
+Poly	25.138	16.691	11.166	9.18	6.3505	6.4903
+Local interconnect		34.7	21.739	15.078	10.141	7.6366
+Metal1			48.193	26.676	16.421	12.017
+Metal2				44.432	22.332	15.693
+Metal3					42.643	27.836
+Metal4						46.976

docs/rules/rcx/capacitance-parallel.tsv

@@ -0,0 +1,7 @@
+Interlayer parallel plate capacitance (aF/um^2)	Local interconnect	Metal1	Metal2	Metal3	Metal4	Metal5
+Poly	94.1644	44.8056	24.4968	16.0552	10.0131	7.2085
+Local interconnect		114.1970	37.5647	20.7915	11.6705	8.0265
+Metal1			133.8610	34.5350	15.0275	9.4789
+Metal2				86.1861	20.3321	11.3410
+Metal3					84.0346	19.6269
+Metal4						68.3252

docs/rules/rcx/capacitance-rules.csv

@@ -1,4 +1,4 @@
-,General(CAP.-)
+,General (CAP.-)
 .X.1,No capacitance is extracted due to contacts.  (This is a generic layout extraction tool limitation.)
 
 ,MOS Devices (MOS.-)

docs/rules/rcx/resistance-rules.csv

@@ -1,4 +1,4 @@
- ,General (RES.-)
+,General (RES.-)
 .X,Parasitic resistance is not extrated under a sheet layer with it's corresponding res.id layer.
 
 ,Sheet Resistance (SR.-)

docs/rules/rcx/resistance-values.tsv

@@ -0,0 +1,23 @@
+Layer	Resistivity (mohms/sq)
+Poly	48200
+Local interconnect	12800
+Metal1	125
+Metal2	125
+Metal3	47
+Metal4	47
+Metal5	29
+Deep nwell	2200000
+Pwell (in deep nwell)	3050000
+Nwell	1700000
+N-diffusion	120000
+P-diffusion	197000
+HV N-diffusion	114000
+HV P-diffusion	191000
+XHR poly resistor	319800
+UHR poly resistor	2000000
+LICON contact	15000
+MCON contact	152000
+VIA	4500
+VIA2	3410
+VIA3	3410
+VIA4	380