mt9079apr1 Zarlink Semiconductor, mt9079apr1 Datasheet - Page 50
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mt9079apr1
Manufacturer Part Number
mt9079apr1
Description
Advanced Controller For E1
Manufacturer
Zarlink Semiconductor
Datasheet
1.MT9079APR1.pdf
(74 pages)
- Current page: 50 of 74
- Download datasheet (669Kb)
Applications
Microprocessor Interfaces
Figure 7 illustrates a circuit which connects the MT9079 to a MC68HC11 microcontroller operating at 2.1 MHz.
Address lines A
(CS). A
for data transfer only.
The receive and transmit data link signals can be connected directly to the MC68HC11 serial port, when it is
operating is slave mode. With this circuit, it is important to make the CPHA bit high in the MC68HC11 Serial
Peripheral Control Register so the SS input can be tied low.
Figure 8 shows a circuit which interfaces the MT9079 to the 80C52 microcontroller. The 80C52 RD and WR signals
are used to generate a R/W signal for the MT9079. RD and WR are also re-timed using the XTAL2 output to
produce a Data Strobe (DS) signal that will meet t
interface.
8
- A
12
are used to select the individual control and status registers of the MT9079, and AD
13
Figure 7 - MT9079 to MC68HC11 (2.1 MHz) Microcontroller Interface Circuit
- A
15
(CPHA = 1)
(CPOL = 0)
MC68HC11
are decoded and latched with the AS signal to generate one of eight possible Chip Selects
A
A
13
D
MISO
MOSI
8
SCK
0
R/W
-A
-A
IRQ
-D
AS
SS
15
12
E
7
3
74HCT04
Zarlink Semiconductor Inc.
RWS
MT9079
. The remainder of this interface is similar to the MC68HC11
50
74HCT04
5
8
+5V
4.7k
CS
IRQ
A
D
R/W
DS
S/P
TxDL
RxDL
DLCLK
0
0
-A
-D
MT9079
4
7
0
- AD
Data Sheet
7
are used
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