m66261fp Mitsumi Electronics, Corp., m66261fp Datasheet - Page 2

• Manufacturer Part Number: m66261fp
• Description: Crosspoint Switch With Mixing Oint Switch With Mixing Function
• Manufacturer: Mitsumi Electronics, Corp.

FUNCTION
Serial data input A is the data input of the first step of 30 BIT
SHIFT REGISTER and when latch enable input LE is “L”, the
signal of A shifts shifting registers one by one when shift
clock input CK
The first 2 bits of shifting data are ignored and the other 30
bits are stored into LATCH CIRCUIT in parallel when latch
enable LE changes from “L” to “H”.
FUNCTION TABLES
(1) 30-bit shift register (Note 3)
(2) Latch circuit [ 30] (Note 3)
(3) 6
Table 1. Latch Output (Q
OPERATION TIMING CHART
2
Operation
Operation
Latch output
Switch No.
mode
mode
Reset
Shift
Shift
Q
H
L
Ln
5 cross point switch
R
CKs
A
LE
D
S
changes from “L” to “H”, in units of 32 bits.
R
R
H
H
L
D
D
Q
Dummy data
Status of switch No. n
31 30
0
L0
A
H
A
L
LN
Inputs
Inputs
Q
29 28 27
OFF
ON
1
) and Corresponding Switch No. n
L1
Switch on/off setting
CK
CK
32 bits
S
S
Q
2
L2
LE
LE
H
L
L
L
1
Q
3
L3
0
Q
Q
Q
Q
H
H
L
0 L0
S0
L0
S0
· · · · ·
· · · · ·
Q
Q
Q
Q
Q
Q
0 S0
0 S0
L
0 L1
S1
S1
L1
Q
Q
Q
Q
Q
Q
0 S1
0 S1
Analog switches come on in a low-impedance state when the
output of the corresponding latch circuit is “H.” They come off
in a high-impedance stage when the output of the corre-
sponding circuit is “L.”
When direct reset input R
only come on, and others come off. This function backs up
the line if a power failure occurs.
L
0 L2
Note 3.
S2
S2
L2
Q
27
L27
6
31 30
Dummy data
Q
Q
Q
Q
Q
Q
Q
Q
5 CROSSPOINT SWITCH with MIXING FUNCTION
0 S2
0 S2
L
0 L3
0
0
S3
L3
S3
Q
S : The content of shift register before CK
L : The content of latch circuit before LE changed from “H” to “L”
Internal outputs
Internal outputs
28
L28
: Change from “L” to “H”
: “H” or “L”
29 28 27
Switch on/off setting
32 bits
· · · · ·
· · · · ·
· · · · ·
· · · · ·
· · · · ·
· · · · ·
· · · · ·
Q
29
L29
D
MITSUBISHI DIGITAL ASSP
1
changes to “L,” switches 0 and 29
Q
Q
Q
Q
Q
Q
0
0 S26
0 S26
0 L27
S27
L27
L
S27
Set switch No.
Q
Q
Q
Q
Q
Q
0 S27
0 S27
0 L28
S28
L28
S28
L
M66261FP
S
changed
Q
Q
Q
Q
Q
Q
0 S28
0 S28
0 L29
S29
H
S29
L29