LMH0318_15 Datasheet, PDF (18/57 Pages) Texas Instruments – LMH0318 3 Gbps HD/SD SDI Reclocker with Integrated Cable Driver

LMH0318
SNLS508 – SEPTEMBER 2015
www.ti.com
8.3.7.5 SMBus MODE
The SMBus interface can also be used to control the device. If pin 1 (MODE_SEL) is pulled low through 1 kΩ to
GND, then Pins 3, 4 are configured as the SMBUS_SCL and SMBUS_SDA respectively. Pins 2, 15 are address
straps, ADDR0/ADDR1 respectively, during power up.
The maximum operating speed supported on the SMBus pins is 400 kHz.
ADDR0
1 kΩ to GND
1 kΩ to GND
1 kΩ to GND
1 kΩ to GND
20 kΩ to GND
20 kΩ to GND
20 kΩ to GND
20 kΩ to GND
Float
Float
Float
Float
1 kΩ to VDD
1 kΩ to VDD
1 kΩ to VDD
1 kΩ to VDD
ADDR1
1 kΩ to GND
20 kΩ to GND
Float
1 kΩ to VDD
1 kΩ to GND
20 kΩ to GND
Float
1 kΩ to VDD
1 kΩ to GND
20 kΩ to GND
Float
1 kΩ to VDD
1 kΩ to GND
20 kΩ to GND
Float
1 kΩ to VDD
Table 4. SMBus MODE
ADDR0 [BINARY]
00
00
00
00
01
01
01
01
10
10
10
10
11
11
11
11
ADDR1 [BINARY]
00
01
10
11
00
01
10
11
00
01
10
11
00
01
10
11
7-Bit SLAVE
ADDRESS [HEX]
0D
0E
0F
10
11
12
13
14
15
16
17
18
19
1A
1B
1C
8-Bit WRITE
COMMAND [HEX]
1A
1C
1E
20
22
24
26
28
2A
2C
2E
30
32
34
36
38
Note: These are 7 bit addresses. Therefore, the LSB must be added to indicate read/write. LSB equal to zero
indicates write and 1 indicates SMBus read operation. For example, for 7 bit hex address 0x0D, the I2C hex
address byte is 0x1A to write and 0X1B to read.
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