BT8375 CONEXANT [Conexant Systems, Inc], BT8375 Datasheet - Page 289

• Manufacturer Part Number: BT8375
• Description: single chip transceivers for T1/E1 and Integrated Service Digital Network (ISDN) primary rate interfaces
• Manufacturer: CONEXANT [Conexant Systems, Inc]

Bt8370/8375/8376
Fully Integrated T1/E1 Framer and Line Interface
Figure 5-12. Intel Synchronous Read Cycle
Table 5-15. Intel Synchronous Read Cycle
N8370DSE
NOTE(S):
(1) Parameter 7 equals 40 ns or 1/2 MCLK + 17 ns, whichever is greater.
Symbol
1
2
3
4
5
6
7
8
9
AD[7:0]
MCLK
WR*
ALE
RD*
A[8]
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
10
10
—
5
5
5
0
0
5.0 Electrical/Mechanical Specifications
8
9
Maximum
—
—
—
—
—
—
(1)
25
—
5.5 MPU Interface Timing
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
5-15