XR88C681CP/28 EXAR [Exar Corporation], XR88C681CP/28 Datasheet - Page 92

• Manufacturer Part Number: XR88C681CP/28
• Description: CMOS Dual Channel UART (DUART)
• Manufacturer: EXAR [Exar Corporation]

Rev. 2.11
A0 - A3
D0 - D7
D0 - D7
(Write)
(Read)
-WR
-CS
-RD
FLOAT
t
t
CS
AS
Figure 52. XR88C681 Read and Write Cycle Timing
VALID
NOT
t
t
RW
DD
t
DS
VALID
92
VALID
t
t
AH
t
CH
DH
t
DF
t
RWD
t
RWD
FLOAT