MT8885 Mitel Networks Corporation, MT8885 Datasheet - Page 18

• Manufacturer Part Number: MT8885
• Description: Integrated DTMFTransceiver with Power Down & Adaptive Micro Interface
• Manufacturer: Mitel Networks Corporation

MT8885
4-68
DS
R/W
Read
AD3-AD0
(RS0, D0-D3)
Write
AD3-AD0
(RS0-D0-D3)
Addr *
non-mux
AS *
CS = AS.Addr
* microprocessor pins
t
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 17 - MC68HC11 Bus Timing (with multiplexed address and data buses)
Figure 16 - MC6800/MC6802/MC6809 Timing Diagram
CSH
t
AS
is from DS rising edge to CS rising edge.
t
AH
t
Addr
Addr
AS
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
t
CSH
Advance Information
Data
t
Data
DHR
t
DHW
t
RWH
t
t
DHW
DHR
t
RWH