mt8977ac Mitel, mt8977ac Datasheet - Page 18

• Manufacturer Part Number: mt8977ac
• Description: Iso-cmos St-bus ?amily T1/esf Framer Circuit
• Manufacturer: Mitel

MT8977
4-116
SIGNALLING
CONTROL
PARALLEL
TELECOM
SPEED
LINK
BUS
HIGH
and
BUS
ISO-CMOS
A
R/W
OE
D
CS
DTACK
A
CS
R/W
IRQ
lACK
Figure 12 - Using the MT8977 in a Parallel Bus Environment
DS
D
MMS MS1 24/32
0
0
0
0
-A
-D
-A
-D
MT8920B
5
(Mode 2)
5
7
MT8920B
(Mode 1)
7
MMS
+5V
+5V
STo0
STo1
STo0
STo1
STi0
STi0
C4i
C4i
F0i
F0i
•
•
•
DSTi
DSTo
CSTi0
CSTo
CSTi1
F0i
E1.5i
C2i
C1.5i
Extractor
MT8977
Clock
E8Ko
RxD
TxA
RxA
RxB
TxB
1.544 MHz
•
•
•
Receiver
Driver
Line
Line
Rx
Tx
•
Preliminary Information
F0i
CVb
C2o
F0b
C4b
C8Kb
MT8940/41
AAAAAAAAAAAAAAAAAAAAAA
A A
A A
A A
A A
A A
A A
A A
AAAAAAAAAAAAAAAAAAAAAA
MT8940/41
12.355/12.352
16.388/16.384
MH89761
SWITCH
EQU
MHz Osc.
DIP
MHz Osc.
AA AA
AA AA
AA AA
AA AA
AA AA
AA AA
AA AA