ls7266r1 LSI Computer Systems, Inc., ls7266r1 Datasheet - Page 7

• Manufacturer Part Number: ls7266r1
• Description: 24-bit Dual-axis Quadrature Counter
• Manufacturer: LSI Computer Systems, Inc.

7266R1-101804-7
For V
Quadrature Mode (See Fig. 3-5)
FCK High Pulse Width
FCK Low Pulse Width
FCK Frequency
Mod-n Filter Clock(FCKn)Period
FCKn frequency
Quadrature Separation
Quadrature Clock Pulse Width
Quadrature Clock frequency
Quadrature Clock to Count Delay
x1/x2/x4 Count Clock Pulse Width
Index Input Pulse Width
Index Skew from A
Carry/Borrow/Compare Output Width
Non-Quadrature Mode (See Fig. 6-7)
Clock A - High Pulse Width
Clock A - Low Pulse Width
Direction Input B Set-up Time
Direction Input B Hold Time
Gate Input (ABG) Set-up Time
Gate Input (ABG) Hold Time
Clock Frequency
Clock to Carry or Borrow Out Delay
Carry or Borrow Out Pulse Width
Clock to Compare Out Delay
Parameter
DD
= 5V
±
10%:
Symbol
t
t
f
t
f
t
t
f
t
t
t
t
t
t
t
t
t
t
t
f
t
t
t
1
2
FCK
3
FCKn
4
5
QA
Q1
Q2
idx
Ai
Q3
6
7
8S
8H
GS
GH
A
9
10
12
,
f
QB
Min. Value
14
14
-
28
-
57
115
-
5t
28
85
-
28
16
16
20
10
20
10
-
-
16
50
3
Max.Value
-
-
35
-
35
-
-
4.3
6t
-
-
28
-
-
-
-
-
-
-
30
30
-
-
3
Unit
ns
ns
MHz
ns
MHz
ns
ns
MHz
-
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
MHz
ns
ns
ns
Remarks
-
-
-
t
where n = PSC = 0 to FF
t
t
f
-
t
t
t
t
-
-
-
-
-
-
f
-
t
-
3
4
5
QA
Q2
-
idx
Ai
Q3
A
10
= (n+1) (t
= (1/ (t
= t
= t
= f
= t
2t
4t
t
3
3t
3
3
3
3
QB
7
3
= 1/8t
6
1
+ t
+t
7
2
3
) )
),
H