msm7564-01 Oki Semiconductor, msm7564-01 Datasheet - Page 27

• Manufacturer Part Number: msm7564-01
• Description: A Single Chip 14.4 Kbps Data & Fax Modem
• Manufacturer: Oki Semiconductor

¡ Semiconductor
CPU Interface 2
The modem supports an interface to connect directly to a multiplexed address-data bus such as an
Intel-compatible CPU (80 mode : ex. MSM66507). The master clock (3.888 MHz) is assumed to be
supplied from clock out pin of an external CPU. Internal address latch and address output pins for
peripherals are also provided. The outline of connection is as follows.
MSM66507
CLKOUT
A7 - A0
A15
A14
ALE
WR
INT
RD
to peripherals
3.888 MHz
V
DD
MCK
ADA7 - ADA0
CS1
CS0
AOD7 - AOD0
RD
WR
ALE
STCHG
CPUTYPE
CKOEN
CPUCLK
GACLK
MSM7564-01
MSM7564
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