CN8380 Datasheet, PDF (80/91 Pages) Conexant Systems, Inc – integrated quad line interface unit unit for both 1.544 Mbps (T1) and 2.048 Mbps (E1) applications

4.0 Electrical/Mechanical Specifications
4.5 AC Characteristics
Table 4-10. Host Serial Port Timing Parameters
Symbol
Parameter
1
CS Setup Before SCLK Rising Edge
2, 3
SCLK Frequency
2
SCLK High Pulse Width
3
SCLK Low Pulse Width
4
SDI to SCLK Rising Edge Setup Time
5
SCLK Rising Edge to SDI Hold Time
6
SCLK Rising Edge to CS Hold Time
7
CS Inactive Cycle Time
8
CS Inactive to SDO Three-State
9
SCLK Falling Edge to SDO Valid Time
—
Rise/Fall Time (10% to 90%)
SCLK, SDI, SDO
NOTE(S): See Figures 4-6 through 4-8.
CN8380
Quad T1/E1 Line Interface
Minimum
10
—
50
50
10
5
5
100
100
—
Maximum
—
8
—
—
—
—
—
—
—
50
20
Units
ns
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
Figure 4-6. Host Serial Port Timing Diagram
CS
Read Timing
SCLK
SDI
SDO
R / W A0 A1 A2 A3 A4 A5 A6
1
Address/Control Byte
D0 D1 D2 D3 D4 D5 D6 D7
Register Data Byte
CS
SCLK
SDI
SDO
8380_021
Write Timing
R / W A0 A1 A2 A3 A4 A5 A6 D0 D1 D2 D3 D4 D5 D6 D7
0
Address/Control Byte
Register Data Byte
4-10
Conexant
N8380DSA
Advance Information