Datasheet

SN65LVCP408
SLLS842A –JUNE 2009 –REVISED JUNE 2010 www.ti.com
Table 3. Port Register Addresses
Register Name Register Address
Output Port 0 0000 0000
Output Port 1 0000 0001
Output Port 2 0000 0010
Output Port 3 0000 0011
Output Port 4 0000 0100
Output Port 5 0000 0101
Output Port 6 0000 0110
Output Port 7 0000 0111
Input Port 0 0000 1000
Input Port 1 0000 1001
Input Port 2 0000 1010
Input Port 3 0000 1011
Input Port 4 0000 1100
Input Port 5 0000 1101
Input Port 6 0000 1110
Input Port 7 0000 1111
Switch Control 0001 0000
Reserved for TI use 0001 0001 to 0001 1010
Table 4. Output Port Control Registers
Bit Function Default Note Access
7 0
Selects the desired input port to be used by the output port. Defaults to same
Input Port Select
6 0 port number as the ouput port. Valid values are : 000 for port 1, 001 for port
No.1
1...etc
5 0
R/W
4 Pre-Emphasis setting. Valid Values are: 00 = 0 dB; 01 = 3 dB; 10 = 6dB, and
Pre-Emphasis 00 11= 10dB; Note When EN=0 then the PRE pin is used to set the Pre-Emphasis
3
setting rather than the I2C register map.
2 Port 3-State 0 3-State Off = 0; 3-State On=1
1 RSVD 0 Reserved
R
0 RSVD 0 Reserved
Table 5. Input Port Control Registers
Bit Function Default Note Access
Rx Equalization Rx Equalization Setting; 0 = 13dB ; 1 = 9dB; Note When EN=0 then the EQ pin
7 0
Select is used to set the Equalization setting rather than the I2C register map.
6 0
R/W
Selects the desired input port to be used by the ouput port when the switch event
Input Port Select
5 0 is triggered. Defaults to same port number as the ouput port. Valid values are :
No.2
000 for port 0, 001 for port 1...etc
4 0
3 RSVD 0 Reserved
2 RSVD 0 Reserved
R
1 RSVD 0 Reserved
0 RSVD 0 Reserved
Note: Following power up, this device must be reset.
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