DJLXT380LE.B4 Cortina Systems Inc, DJLXT380LE.B4 Datasheet - Page 32

• Manufacturer Part Number: DJLXT380LE.B4
• Manufacturer: Cortina Systems Inc

Specifications of DJLXT380LE.B4

• Lead Free Status / RoHS Status: Not Compliant

LXT380 — Octal E1 G.703 Transceiver
2.14
32
Figure 13. Serial Host Mode Timing
CS
SCLK
SDI
R/W = 1: READ from the LXT380
R/W = 0: WRITE to the LXT380
X = Don’t Care
Serial Host Mode
The LXT380 operates in Serial Host Mode when the MODE pin is left open.
SIO data structure. The registers are accessible through a 16bit word: an 8bit Command/Address
byte (bits R/W and A1-A7) and a subsequent 8 bit data byte (bits D0-7). Bit R/W determines
whether a read or a write operation occurs. Bits A4-0 in the Command/Address byte address
specific registers (the address decoder ignores bits A7-A5). The data byte depends on both the
value of bit R/W and the address of the register as set in the Command/Address byte.
R/W
A1
ADDRESS/COMMAND BYTE
SDO—REMAINS HIGH Z
A2
A3
A4
A5
X
A6
X
A7
X
D0
D1
SDO IS DRIVEN IF R/W = 1
D2
INPUT DATA BYTE
D3
D4
D5
Figure 13
D6
D7
Datasheet
shows the