MT8980DP1 Zarlink Semiconductor, Inc., MT8980DP1 Datasheet - Page 2

• Manufacturer Part Number: MT8980DP1
• Description: 256 x 256 Channels (8 TDM Streams at 2.048 Mbps) Non-blocking Digital Switch (DX)
• Manufacturer: Zarlink Semiconductor, Inc.

MT8980D
Pin Description
2-4
DIP
2-4
5-9
13-
16-
10
11
12
15
18
19
20
21
40
1
Pin #
PLCC
7-11 STi3-
3-5
15-
19-
STi3
VDD
44
12
13
14
17
21
22
23
24
STi4
STi5
STi6
STi7
2
C4i
F0i
A0
A1
A2
A0-A2 Address 0 to 2 (Inputs). These are the inputs for the address lines on the microprocessor
A3-A5 Address 3 to 5 (Inputs). These are the inputs for the address lines on the microprocessor
Name
STi0-
STi2
STi7
R/W Read or Write (Input). This is the input for the read/write signal on the microprocessor
DTA
V
C4i
F0i
DS
CS
DD
7
8
9
10
11
12
13
14
15
16
17
Data Acknowledgement (Open Drain Output). This is the data acknowledgement on the
microprocessor interface. This pin is pulled low to signal that the chip has processed the
data. A 909 Ω , 1/4W, resistor is recommended to be used as a pullup.
ST-BUS Input 0 to 2 (Inputs). These are the inputs for the 2048 kbit/s ST-BUS input
streams.
ST-BUS Input 3 to 7 (Inputs). These are the inputs for the 2048 kbit/s ST-BUS input
streams.
Power Input. Positive Supply.
Framing 0-Type (Input). This is the input for the frame synchronization pulse for the
2048 kbit/s ST-BUS streams. A low on this input causes the internal counter to reset on
the next negative transition of C4i.
4.096 MHz Clock (Input). ST-BUS bit cell boundaries lie on the alternate falling edges of this
clock.
interface.
interface.
Data Strobe (Input). This is the input for the active high data strobe on the microprocessor
interface.
interface - high for read, low for write.
Chip Select (Input). This is the input for the active low chip select on the microprocessor
interface
44 PIN PLCC
29
39
38
37
36
35
34
33
32
31
30
Figure 2 - Pin Connections
STo3
STo4
STo5
STo6
STo7
VSS
D0
D1
D2
D3
D4
Description
VDD
STi0
STi1
STi2
STi3
STi4
STi5
STi6
STi7
DTA
R/W
C4i
F0i
DS
A0
A1
A2
A3
A4
A5
40 PIN PLASTIC DIP
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
CSTo
ODE
STo0
STo1
STo2
STo3
STo4
STo5
STo6
STo7
VSS
D0
D1
D2
D3
D4
D5
D6
D7
CS