EM78815
8-Bit Microcontroller
TONE
EST
TONE
Tdp
5~20mS
by S/W
Tgta
30mS Typ.
Tgtp
30mS Typ.
Vtst
ST/GT
Q4..Q1
1/2 VDD
Tpq
8 uS Typ.
STD
LINE_ENG
Fig. 16 DTMF Receiver Timing
Bit 7 (CMPFLAG) : Comparator output flag
0 → Input voltage < reference voltage
1 → Input voltage > reference voltage
NOTE
Refer to Sec. 7.2.16.3 RA Page 2 Comparator Control Register.
7.2.14.4 Page 3 SPI Data Buffer
Bit 7
SPIB7
R/W-X
Bit 6
SPIB6
R/W-X
Bit 5
SPIB5
R/W-X
Bit 4
SPIB4
R/W-X
Bit 3
SPIB3
R/W-X
Bit 2
SPIB2
R/W-X
Bit 1
SPIB1
R/W-X
Bit 0
SPIB0
R/W-X
Bit 0 ~ Bit 7 (SPIB0 ~ SPIB7) : SPI data buffer
If you write data to this register, the data will be written to the SPIW register. If you
read this data, it will read the data from the SPIR register. Refer to Fig. 9.
7.2.15 R9 Port 9 I/O Data, Data ROM Address, Keytone Control
7.2.15.1 Page 0 Port 9 I/O Data
Bit 7
P97
Bit 6
P96
Bit 5
P95
Bit 4
P94
Bit 3
P93
Bit 2
P92
Bit 1
P91
Bit 0
P90
R/W-X
R/W-X
R/W-X
R/W-X
R/W-X
R/W-X
R/W-X
R/W-X
Product Specification (V2.4) 08.01.2004
(This specification is subject to change without further notice)
31
ELAN [ ELAN MICROELECTRONICS CORP ]
