dereksohail
New Member
MT8816
Iam using MT8816 with Microcontroller 89c52 (8051 type) and want to create connection between 2 rows but the problem is that as i observe the truth table of MT8816 there is no indication of connecting two rows with a column other then Yo can any one explain how to use any column other than Y0 using the truth table ....
**broken link removed**
Port 1, output port, sends data to MT8816:-
connected with MT8816 address pins as mentioned below:
P1.7 P1.6 P1.5
Data AX3 AX2
P1.4 P1.3 P1.2
AX1 AX0 AY2
P1.1 P1.0
AY1 AY0
Telephone set is connected to MT8816 rows through SLIC as
X2 row for telephone 1 (P2.0 off hook/on hook bit)
X3 for telephone 2 (p2.1 off hook/on hook bit)
X4 and similarly X5
so in order to create conversation between telephone 2 and telephone 3 , X4 and X5 should be connected using a column.
Yo column has the dial tone:
so i have to use some other column can any one explain or write the code for connecting X2 with X5 using column Y2 and guide me how to use column other than Y0 coz iam unable to understand using the datasheet and truth table.
(I know that in order create connections firstly CS should be High then Strobe should be high then we take data from the truth table and send it to MT8816 with high on Data pin and when we want disconnect a connection simply send the same data and send low on data pin, in order to create connections between two rows , firstly a row should be connected on a column and then the second row is also connected on the same row.)
Iam using MT8816 with Microcontroller 89c52 (8051 type) and want to create connection between 2 rows but the problem is that as i observe the truth table of MT8816 there is no indication of connecting two rows with a column other then Yo can any one explain how to use any column other than Y0 using the truth table ....
**broken link removed**
Port 1, output port, sends data to MT8816:-
connected with MT8816 address pins as mentioned below:
P1.7 P1.6 P1.5
Data AX3 AX2
P1.4 P1.3 P1.2
AX1 AX0 AY2
P1.1 P1.0
AY1 AY0
Telephone set is connected to MT8816 rows through SLIC as
X2 row for telephone 1 (P2.0 off hook/on hook bit)
X3 for telephone 2 (p2.1 off hook/on hook bit)
X4 and similarly X5
so in order to create conversation between telephone 2 and telephone 3 , X4 and X5 should be connected using a column.
Yo column has the dial tone:
so i have to use some other column can any one explain or write the code for connecting X2 with X5 using column Y2 and guide me how to use column other than Y0 coz iam unable to understand using the datasheet and truth table.
(I know that in order create connections firstly CS should be High then Strobe should be high then we take data from the truth table and send it to MT8816 with high on Data pin and when we want disconnect a connection simply send the same data and send low on data pin, in order to create connections between two rows , firstly a row should be connected on a column and then the second row is also connected on the same row.)
