MT8889 Zarlink Semiconductor, Inc., MT8889 Datasheet - Page 17

• Manufacturer Part Number: MT8889
• Description: Integrated DTMF Transceiver with Adaptive Micro Interface
• Manufacturer: Zarlink Semiconductor, Inc.

➀ t
DS
R/W
Read
AD3-AD0
(RS0, D0-D3)
Write
AD3-AD0
(RS0-D0-D3)
Addr *
non-mux
AS *
CS = AS.Addr
* microprocessor pins
DS
Q clk*
A0-A15
(RS0)
R/W(read)
Read Data
(D3-D0)
R/W (write)
Write data
(D3-D0)
CS = (E + Q).Addr [MC6809]
CS = VMA.Addr [MC6800, MC6802]
*microprocessor pin
DSW
is from data to DS falling edge; t
Figure 18 - MC68HC11 Bus Timing (with multiplexed address and data buses)
Figure 17 - MC6800/MC6802/MC6809 Timing Diagram
CSH
t
AS
is from DS rising edge to CS rising edge
t
AH
t
AS
Addr
Addr
t
t
RWS
AS
t
CSS
High Byte of Addr
t
t
RWS
CSS
t
CSS
16 bytes of Addr
t
DDR
t
AH
t
CSH
t
AH
t
CSH
t
t
DDR
t
DSW
DSW
➀
t
➀
CSH
➀
Data
t
Data
DHR
t
DHW
t
RWH
MT8889C
t
t
DHW
DHR
t
RWH
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