DESCRIPTION
The .al format is the ALLIANCE format for the logical view
of a cell. We give below the BNF description of the format :
file ::=
version
header
connectors
instances
transistors
signals
crosstalk_capacitances
end_of_file
version ::= 'V ALLIANCE : ' version_number
header ::= 'H ' name ',' file_type ',' date
/// name : name of the figure
/// date : saving file date
connectors ::= { connector }
connector ::= 'C ' name ',' connector_direction ','
connector_type ',' net_num [list_of_physical_node]
list_of_physical_node ::= { ',' node_num }
instances ::= { instance connectors }
/// An instance is followed by his connectors
instance ::= 'I ' model_name ',' instance_name
transistors ::= { transistor }
transistor ::= 'T' type ',' lenght ',' width ',' drain ','
grid ',' source ',' bulk ',' xs ',' xd ',' ps ',' pd
',' x ',' y [ ',' node_drain ',' node_grid ','
node_source ',' node_bulk ] ',' trname
/// drain : number of the net connected to the drain
/// grid : number of the net connected to the grid
/// source : number of the net connected to the source
/// bulk : number of the net connected to the bulk
/// xs, xd : To compute respectivly the source and
/// drain area
/// ps, pd : perimeter of the source and drain
/// x, y : coordinate of the transistor in a layout
/// node_drain : number of the node connected to the drain
/// node_grid : number of the node connected to the grid
/// node_source : number of the node connected to the source
/// node_bulk : number of the node connected to the bulk
signals ::= { signal }
signal := sig_index [ { resistance } ] [ { capacitance } ]
sig_index ::= 'S ' net_num ',' signal_type [ list_of_signal_name ]
list_of_signal_name ::= { ',' signal_name }
resistance := 'R ' layer ',' node1 ',' node2 ',' resi ',' capa ','
x ',' y ',' dx ',' dy
capacitance := 'Q ' capa
/// Each resistance is describe as a resistor beetwen two nodes
/// connected to the ground with capacitor with a value of capa/2.
/// Capacitance is the entire capacitance of the net to ground.
crosstalk_capacitances ::= { crosstalk_capacitance }
crosstalk_capacitance ::= K capa ',' sig1 ',' node1 ',' sig2 ',' node2
end_of_file ::= 'EOF'
version_number ::= number
file_type ::= 'L'
date ::= day '/' month '/' year
connector_direction ::= 'IN' | 'OUT' | 'INOUT' | 'UNKNOWN' |
'TRISTATE' | 'TRANSCV'
/// in : input
/// out : output
/// inout : input and output
/// unknown : no information is available
/// tristate : tristate output
/// transcv : tristate output and input
connector_type ::= 'EXTERNAL' | 'INTERNAL'
net_num ::= number
node_num ::= number
model_name ::= name
instance_name ::= name
type ::= 'N' | 'P'
lenght ::= float
width ::= float
drain ::= net_num
grid ::= net_num
source ::= net_num
bulk ::= net_num
node1 ::= node_num
node2 ::= node_num
sig1 ::= net_num
sig2 ::= net_num
xs ::= float
xd ::= float
ps ::= float
pd ::= float
x ::= float
y ::= float
dx ::= float
dy ::= float
trname :: name
layer ::= 'X' | 'PY' | 'A1' | 'A2' | 'CY' | 'CN' | 'CP' | 'CV'
| 'CW' | 'CA' | 'RE'
signal_type ::= 'EXTERNAL' | 'INTERNAL'
capa ::= float
resi ::= float
signal_name ::= name
number ::= { '0' | '1'| '2' | '3' | '4' | '5' |
'6' | '7'| '8' | '9' }
float ::= number [ '.' number ]
name ::= word
Example 1
This example is the representation of a nand whith two input, extracted
with Lynx at transistor level.
V ALLIANCE : 6
H na2_y,L,29/ 3/99
C vss,UNKNOWN,EXTERNAL,2,1,9
C vdd,UNKNOWN,EXTERNAL,1,9,13
C i1,UNKNOWN,EXTERNAL,6,1,8
C i0,UNKNOWN,EXTERNAL,5,2,8
C f,UNKNOWN,EXTERNAL,3,1,11
T P,1,12,1,5,3,1,2,2,28,28,17,32.5,4,3,7,3,tr_00004
T P,1,12,3,6,1,1,2,2,28,28,11,32.5,7,7,1,2,tr_00003
T N,1,12,3,5,4,2,2,2,28,28,17,12.5,3,1,1,8,tr_00002
T N,1,12,4,6,2,2,2,2,28,28,11,12.5,1,2,2,5,tr_00001
S 6,EXTERNAL,i1
Q 0.020455
W 4,3,CV,0,0,7.2,17.6,0,0
W 6,5,CV,0,0,6.4,22.4,0,0
W 5,8,A2,0.4,0.00408,6.4,22.4,1.6,13.6
W 1,5,A2,0.6,0.006,6.4,2.4,1.6,20
W 3,6,A1,0.3,0.00168,6.4,17.6,1.6,4.8
W 4,7,PY,500,0.00315,8.8,17.6,0.8,8.4
W 2,4,PY,450,0.00285,8.8,10,0.8,7.6
S 5,EXTERNAL,i0
Q 0.020455
W 5,4,CV,0,0,15.2,17.6,0,0
W 7,6,CV,0,0,16,22.4,0,0
W 6,8,A2,0.4,0.00408,16,22.4,1.6,13.6
W 2,6,A2,0.6,0.006,16,2.4,1.6,20
W 4,7,A1,0.3,0.00168,16,17.6,1.6,4.8
W 5,3,PY,500,0.00315,13.6,17.6,0.8,8.4
W 1,5,PY,450,0.00285,13.6,10,0.8,7.6
S 4,INTERNAL
Q 0
S 3,EXTERNAL,f
Q 0.021985
W 3,4,CV,0,0,16,10.4,0,0
W 6,5,CV,0,0,11.2,17.6,0,0
W 8,7,CV,0,0,11.2,23.2,0,0
W 9,7,CV,0,0,11.2,28,0,0
W 5,11,A2,0.55,0.00552,11.2,17.6,1.6,18.4
W 1,5,A2,0.45,0.00456,11.2,2.4,1.6,15.2
W 10,9,A1,0.2,0.00126,11.2,24.4,1.6,3.6
W 8,10,A1,0,0.00042,11.2,23.2,1.6,1.2
W 6,8,A1,0.7,0.00161,11.2,17.6,0.8,5.6
W 2,6,A1,0.9,0.00207,11.2,10.4,0.8,7.2
W 2,4,A1,0.6,0.00138,11.2,10.4,4.8,0.8
S 2,EXTERNAL,vss
Q 0.0245
W 4,3,CV,0,0,6.4,1.6,0,0
W 7,6,CV,0,0,11.2,1.6,0,0
W 11,10,CV,0,0,16,1.6,0,0
W 3,2,CV,0,0,6.4,6.4,0,0
W 12,2,CV,0,0,6.4,10.4,0,0
W 3,12,A1,0.4,0.00224,6.4,4,1.6,6.4
W 10,9,A1,0,0.00174,16,4,2.4,6.4
W 6,10,A1,0,0.00348,11.2,4,4.8,6.4
W 3,6,A1,0,0.00348,6.4,4,4.8,6.4
W 1,3,A1,0,0.00174,4,4,2.4,6.4
S 1,EXTERNAL,vdd
Q 0.02846
W 5,1,CV,0,0,6.4,26.4,0,0
W 6,4,CV,0,0,16,26.4,0,0
W 7,1,CV,0,0,6.4,29.6,0,0
W 8,4,CV,0,0,16,29.6,0,0
W 14,10,CV,0,0,6.4,36,0,0
W 15,11,CV,0,0,11.2,36,0,0
W 16,12,CV,0,0,16,36,0,0
W 7,10,A1,0.3,0.00168,6.4,29.6,1.6,4.8
W 5,7,A1,0.2,0.00112,6.4,26.4,1.6,3.2
W 8,12,A1,0.3,0.00168,16,29.6,1.6,4.8
W 6,8,A1,0.2,0.00112,16,26.4,1.6,3.2
W 12,13,A1,0,0.00174,16,34.4,2.4,6.4
W 9,10,A1,0,0.00174,4,34.4,2.4,6.4
W 11,12,A1,0,0.00348,11.2,36,4.8,6.4
W 10,11,A1,0,0.00348,6.4,36,4.8,6.4
K 0.00213,1,1,2,1
K 0.00454,5,6,2,1
K 0.00199,6,8,2,1
EOF
Example 2
This example is a xor designed with three cells.
V ALLIANCE : 6
H gxor,L,29/ 3/99
C vss,UNKNOWN,EXTERNAL,4,1,2,9,10
C vdd,UNKNOWN,EXTERNAL,6,1,2,10,3
C s,UNKNOWN,EXTERNAL,8,2
C b,UNKNOWN,EXTERNAL,5,5
C a,UNKNOWN,EXTERNAL,3,1
I ndrvp_y,auxsc3
C vss,UNKNOWN,INTERNAL,4,8,9
C vdd,UNKNOWN,INTERNAL,6,9,10
C i,UNKNOWN,INTERNAL,5,4,9
C f,UNKNOWN,INTERNAL,7,8,12
I mx2_y,s
C vss,UNKNOWN,INTERNAL,4,4,8
C vdd,UNKNOWN,INTERNAL,6,5,9
C t,UNKNOWN,INTERNAL,8,1,3
C l1,UNKNOWN,INTERNAL,7,1,11
C l0,UNKNOWN,INTERNAL,2,4,8
C i1,UNKNOWN,INTERNAL,3,11,13
C i0,UNKNOWN,INTERNAL,5,1,8
I ndrvp_y,auxsc1
C vss,UNKNOWN,INTERNAL,4,2,3
C vdd,UNKNOWN,INTERNAL,6,2,4
C i,UNKNOWN,INTERNAL,3,10,12
C f,UNKNOWN,INTERNAL,2,1,7
S 8,EXTERNAL,s
Q 0.0072
W 2,1,A2,0.55,0.00528,79.2,0,1.6,17.6
S 7,INTERNAL,auxsc3
Q 0.02142
W 3,2,CV,0,0,64.8,8.8,0,0
W 5,4,CV,0,0,74.4,8.8,0,0
W 7,6,CV,0,0,74.4,12.8,0,0
W 10,9,CV,0,0,88.8,12.8,0,0
W 9,8,A2,0.15,0.00144,88.8,12.8,1.6,4.8
W 6,10,A1,1.8,0.00414,74.4,12.8,14.4,0.8
W 4,7,A2,0.1,0.0012,74.4,8.8,1.6,4
W 2,1,A2,0.25,0.00264,64.8,8.8,1.6,8.8
W 3,5,A1,1.2,0.00276,64.8,8.8,9.6,0.8
S 6,EXTERNAL,vdd
Q 0.05453
W 7,6,CV,0,0,37.6,48,0,0
W 8,6,CV,0,0,37.6,51.2,0,0
W 6,5,A1,0.1,0.00754,37.6,49.6,10.4,6.4
W 4,6,A1,0,0.0029,33.6,49.6,4,6.4
W 8,3,A2,0.05,0.00203,37.6,51.2,3.2,5.6
W 7,8,A2,0.05,0.00116,37.6,48,3.2,3.2
W 1,7,A2,0.75,0.0174,37.6,0,3.2,48
S 5,EXTERNAL,b
Q 0.02922
W 3,2,CV,0,0,50.4,4.8,0,0
W 7,6,CV,0,0,98.4,4.8,0,0
W 6,4,A2,0.4,0.00384,98.4,4.8,1.6,12.8
W 5,6,A2,0.15,0.00144,98.4,0,1.6,4.8
W 2,1,A2,0.4,0.00384,50.4,4.8,1.6,12.8
W 3,7,A1,6,0.0138,50.4,4.8,48,0.8
S 4,EXTERNAL,vss
Q 0.05453
W 6,5,CV,0,0,44,17.6,0,0
W 6,7,CV,0,0,44,20.8,0,0
W 7,10,A2,0.55,0.01305,44,20.8,3.2,36
W 1,5,A2,0.25,0.00638,44,0,3.2,17.6
W 5,7,A2,0.05,0.00116,44,17.6,3.2,3.2
W 6,4,A1,0,0.0029,44,19.2,4,6.4
W 3,6,A1,0.1,0.00754,33.6,19.2,10.4,6.4
S 3,EXTERNAL,a
Q 0.03282
W 3,2,CV,0,0,16.8,8.8,0,0
W 5,4,CV,0,0,60,8.8,0,0
W 7,6,CV,0,0,60,12.8,0,0
W 9,8,CV,0,0,69.6,12.8,0,0
W 8,11,A2,0.15,0.00144,69.6,12.8,1.6,4.8
W 6,9,A1,1.2,0.00276,60,12.8,9.6,0.8
W 4,7,A2,0.1,0.0012,60,8.8,1.6,4
W 2,10,A2,0.25,0.00264,16.8,8.8,1.6,8.8
W 1,2,A2,0.25,0.00264,16.8,0,1.6,8.8
W 3,5,A1,5.4,0.01242,16.8,8.8,43.2,0.8
S 2,INTERNAL,auxsc1
Q 0.0225
W 3,2,CV,0,0,7.2,12.8,0,0
W 6,5,CV,0,0,55.2,12.8,0,0
W 5,4,A2,0.15,0.00144,55.2,12.8,1.6,4.8
W 2,1,A2,0.15,0.00144,7.2,12.8,1.6,4.8
W 3,6,A1,6,0.0138,7.2,12.8,48,0.8
S 1,INTERNAL,implicit
Q 0
EOF
