參數資料
型號: EM73475
廠商: ELAN Microelctronics Corp .
英文描述: Highly-Integrated Digital Answering Machine Controller(基于4位控制器的高集成數字電話應答控制器)
中文描述: 高度集成的數字應答機控制器(基于4位控制器的高集成數字電話應答控制器)
文件頁數: 6/29頁
文件大?。?/td> 175K
代理商: EM73475
6
EM73475
4-BIT MICRO-CONTROLLER FOR TELECOM PRODUCT
Function
* This specification are subject to be changed without notice.
8.1.1998
Preliminary
Name
External I/O Ports
P1
P2
P7
P8
P9
P14
Internal I/O Ports
P6
P10
P11
P12
P13
P15
P16
P20.3
P23
P24
P25
P28
P29
P30
Type
I/O
I/O
I/O
I/O
I/O
Input
General purpose I/O. LED low nibble output with R-option.
General purpose I/O. LED high nibble output with R-option.
General purpose I/O.
General purpose I/O.
General purpose I/O.
CPU status.
Data input
Control
Control
Status
Control
Control
Control
Control
Control
Control
Control
Control
Control
Control
Remote control code input port.
Analog switch control port.
Analog switch control port.
Status monitor port .
Volume control port.
DTMF validity lenght and INT1 trigger type control port
Sleep control port.
R-option control port.
Low nibble control port of melody generator.
High nibble control port of melody generator.
Time Base Interrupt control port.
Timer/Counter 1 control port.
Timer/Counter 2 control port.
Melody, erase head and VOX sensitivity selection control port.
External I/O ports
P1.0 ~ P1.3, P2.0 ~ P2.3
Type
Mask option
Applicable instructions : TFP p, b; TTP p, b; SEP p, b; CLP p, b; INA p; INM p; OUTA p; OUTM p;
OUT #k, p.
Function
: Port 1 and Port 2 are both 4-bit I/O ports with high current sink NMOS to drive
LEDs.
: I/O ports.
: R-option, push-pull or NMOS open drain type.
P7.0 ~ P7.3
Type
Mask option
Applicable instructions : TFP p, b; TTP p, b; SEP p, b; CLP p, b; INA p; INM p; OUTA p; OUTM p; OUT
#k, p, CLPL, SEPL, TFPL.
Function
: 4-bit general purpose I/O ports. Each pin of P6 and P7 can be set, cleared and tested
by instruction of SEPL, CLPL and TFPL which is specified by L register. The
relation of L register with P6 and P7 is as below:
: I/O ports.
: Push-pull or NMOS open drain type.
LR = C
P7.0
LR = D
P7.1
LR = E
P7.2
LR = F
P7.3
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