73k322l ETC-unknow, 73k322l Datasheet - Page 22

• Manufacturer Part Number: 73k322l
• Description: Ccitt V.23, V.22, V.21 Single-chip Modem
• Manufacturer: ETC-unknow

CCITT V.23, V.22, V.21
Single-Chip Modem
DYNAMIC CHARACTERISTICS AND TIMING SERIAL CONTROL INTERFACE
PARAMETER
Timing (Refer to Timing Diagrams)
TWW
TRD
TRDF
TCKD
TCKW
TDCK
TAC
TCA
TWH
*
NOTE: At the beginning of a read cycle both EXCLK and RD must be low before bit D0 is output.
READ TIMING DIAGRAM (SERIAL CONTROL MODE)
Control for setup is the falling edge of RD or WR .
Control for hold is the falling edge of RD or the rising edge of WR .
AD0-AD2
EXCLK
AD7
RD
ADDRESS
TAC
TCA
TRD
D0
D1
CONDITION
WR width
Data out from RD low
Data float after RD high
WR after EXCLK Low
Data setup before EXCLK Low
Address setup before control*
Address hold after control*
Data Hold after EXCLK
Data out after EXCLK Low
TCKD
D2
22
D3
D4
MIN
140
200
150
50
50
85
D5
NOM
D6
25000
D7
MAX
140
200
50
TRDF
UNIT
ns
ns
ns
ns
ns
ns
ns
ns