MT88L85ANR 데이터 시트보기 (PDF) - Microsemi Corporation
부품명
상세내역
제조사
MT88L85ANR
Microsemi Corporation
MT88L85ANR Datasheet PDF : 29 Pages
| |||
MT88L85
Data Sheet
INITIALIZATION PROCEDURE
A software reset must be included at the beginning of all programs to initialize the control registers after power up.
Description:
Motorola
Intel
RS0 R/W WR RD
Data
b3 b2 b1 b0
1) Read Status Register
2) Write to Control Register
1
1
10
1
0
01
X
X
X
X
0
0
0
0
3) Write to Control Register
4) Write to Control Register
1
0
01
1
0
01
0
0
0
0
1
0
0
0
5) Write to Control Register
6) Read Status Register
1
0
01
1
1
10
0
0
0
0
X
X
X
X
TYPICAL CONTROL SEQUENCE FOR BURST MODE APPLICATIONS
Transmit DTMF tones of 50 ms burst/50 ms pause and Receive DTMF Tones.
Sequence:
RS0 R/W WR RD
b3 b2 b1 b0
1) Write to Control Register A
1
0
01
(tone out, DTMF, IRQ, Select Control Register B)
2) Write to Control Register B
1
0
01
1
1
0
1
0
0
0
0
(burst mode)
3) Write to Transmit Data Register
0
0
01
0
1
1
1
(send a digit 7)
4) Wait for an Interrupt or Poll Status Register
5) Read the Status Register
1
1
10
X
X
X
X
-if bit 1 is set, the Tx is ready for the next tone, in which case...
Write to Transmit Register
0
0
(send a digit 5)
01
0
1
0
1
-if bit 2 is set, a DTMF tone has been received, in which case....
Read the Receive Data Register
0
1
10
X
X
X
X
-if both bits are set...
Read the Receive Data Register
Write to Transmit Data Register
0
1
10
0
0
01
X
X
X
X
0
1
0
1
NOTE: IN THE TX BURST MODE, STATUS REGISTER BIT 1 WILL NOT BE SET UNTIL 100 ms (±2 ms) AFTER THE DATA IS WRITTEN TO THE TX
DATA REGISTER. IN EXTENDED BURST MODE THIS TIME WILL BE DOUBLED TO 200 ms (± 4 ms)
Figure 15 - Application Notes
Absolute Maximum Ratings*
Parameter
Symbol
Min.
Max.
1 Power supply voltage VDD-VSS
VDD -VSS
5.5
2 Voltage on any pin
VI
VSS-0.3
VDD+0.3
3 Current at any pin (Except VDD and VSS)
10
4 Storage temperature
TST
-65
+150
5 Package power dissipation
PD
1000
* Exceeding these values may cause permanent damage. Functional operation under these conditions is not implied.
Units
V
V
mA
°C
mW
18
Zarlink Semiconductor Inc.
Share Link: 