CX28398 Conexant Systems, CX28398 Datasheet - Page 262

• Manufacturer Part Number: CX28398
• Description: (CX28394 - CX28398) Quad/x16/Octal?T1/E1/J1 Framers
• Manufacturer: Conexant Systems

4.0 Electrical/Mechanical Specifications
4.5 MPU Interface Timing
Figure 4-11. Intel Synchronous Read Cycle
Table 4-14. Intel Synchronous Read Cycle
4-14
NOTE(S):
(1)
Symbol
Parameter 7 equals 40 ns or 1/2* MCLK + 17 ns, whichever is greater.
1
2
3
4
5
6
7
8
9
AD[7:0]
MCLK
MOTO* = 1, SYNCMD = 1
WR*
ALE
A[8]
RD*
CS*
ALE high pulse width
A[8], AD[7:0] Address setup to ALE low
A[8], AD[7:0] Address hold after ALE low
ALE low to RD* and CS* both low
RD*, CS*, WR* setup to MCLK high (Start RD cycle)
RD*, CS*, WR* hold after MCLK high
Start RD* cycle to AD[7:0] valid
RD* or CS* high to AD[7:0] invalid/three-state
End RD cycle to next ALE high
Address
Address
1
2
Parameter
3
4
5
Conexant
6
7
Minimum
Read Data
15
—
2
5
3
5
0
0
5
8
Quad/x16/Octal—T1/E1/J1 Framers
9
CX28394/28395/28398
Maximum
(1)
—
—
—
—
—
—
25
—
Units
100054E
ns
ns
ns
ns
ns
ns
ns
ns
ns