DS2480B Maxim Integrated Products, DS2480B Datasheet - Page 13

• Manufacturer Part Number: DS2480B
• Description: IC LINE DRVR W/SENSOR 1-W 8-SOIC
• Manufacturer: Maxim Integrated Products
• Type: Line Driver, Transmitterr

Specifications of DS2480B

• Number Of Drivers/receivers: 1/0
• Protocol: RS232
• Voltage - Supply: 4.5 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Table 4. CONFIGURATION PARAMETER VALUE CODES
The syntax of configuration commands is very simple. Each 8-bit code word contains a 3-bit parameter
code to specify the parameter and the 3-bit value code to be selected. Bit 7 of the command code is set to
0 and bit 0 is always a 1. To read the value code of a parameter, one writes all 0s for the parameter code
and puts the parameter code in place of the parameter value code. Table 5 shows the details.
The configuration command response byte is similar to the command byte itself. Bit 0 of the response
byte is always 0. When writing a parameter, the upper 7 bits are the echo of the command code. When
reading a parameter, the current value code is returned in bit positions 1 to 3 with the upper 4 bits being
the same as sent (see Table 6).
Table 5. CONFIGURATION COMMAND CODES
Table 6. CONFIGURATION COMMAND RESPONSE BYTE
001 (PDSRC)
010 (PPD)
011 (SPUD)
100 (W1LT)
101 (DSO/W0RT)
110 (LOAD)
111 (RBR)
Write Parameter
Read Parameter
Write Parameter
Read Parameter
Parameter Code
FUNCTION
FUNCTION
16.4
BIT 7
BIT 7
000
1.8
9.6
15
32
8
3
0
0
0
0
65.5
19.2
001
2.2
2.1
64
9
4
BIT 6
BIT 6
0
parameter code
1.65
57.6
128
131
010
2.4
10
same as sent
same as sent
5
BIT 5
BIT 5
13 of 31
0
115.2
1.37
011
256
262
2.7
11
Value Codes
6
BIT 4
BIT 4
100
512
524
0
1.1
3.0
9.6
12
7
1024
1048
0.83
19.2
BIT 3
BIT 3
101
3.3
13
8
parameter value code
parameter value code
parameter code
same as sent
“dyn.”
2048
57.6
110
0.7
3.6
BIT 2
BIT 2
14
9
115.2
0.55
111
3.9
15
10
¥
¥
BIT 1
BIT 1
V/µs
kbps
Unit
mA
ms
µs
µs
µs
BIT 0
BIT 0
1
1
0
0