4.0 Electrical/Mechanical Specifications
CX28394/28395/28398
4.5 MPU Interface Timing
Quad/x16/Octal—T1/E1/J1 Framers
Figure 4-13. Serial Control Port Timing
Read Timing
CS\
SCLK
R/W A0 A1 A2 A3 A4 A5 A6
SDI
1
Address/Control Byte
D0 D1 D2 D3 D4 D5 D6 D7
Register Data Byte
SDO
Write Timing
CS\
SCLK
SDI
R/W A0 A1 A2 A3 A4 A5 A6 D0 D1 D2 D3 D4 D5 D6 D7
0
Address/Control Byte
Register Data Byte
SDO
Figure 4-14. Serial Control Port Write Timing
SERCS*
1
2
3
SERCKO
SERDO
A0
A1
D5
D6
D7
Address/Command
Byte
Write Data Byte
4-16
Conexant
100054E