pcd3312cp NXP Semiconductors, pcd3312cp Datasheet - Page 15

• Manufacturer Part Number: pcd3312cp
• Description: Dtmf/modem/musical-tone Generators
• Manufacturer: NXP Semiconductors

Philips Semiconductors
1996 Nov 21
handbook, full pagewidth
handbook, full pagewidth
DTMF/modem/musical-tone generators
Clock LOW minimum = 130 s 25 s; clock HIGH minimum 390 s 25 s.
Mark-to-space ratio = 1 : 3 (LOW-to-HIGH).
Start byte 0000 0001.
Maximum number of bytes = 6.
Premature termination of transfer not allowed.
Acknowledge clock bit must be provided by master.
SDA
SCL
CONDITION
START
SDA
SDA
SCL
START BYTE
t BUF
Fig.14 Complete data transfer in low speed mode.
t HD;STA
Fig.13 Low-speed mode timing.
ACKNOWLEDGE
t LOW
DUMMY
t r
t SU;STA
15
CONDITION
REPEATED
START
t HIGH
t f
ADDRESS
PCD3311C; PCD3312C
t HD;DAT
R/W
ACKNOWLEDGE STOP
t SU;STO
t SU;DAT
Product specification
MGG545
CONDITION
MGG546