DS125BR800A Datasheet, PDF (5/53 Pages) Texas Instruments – Low-Power 12.5-Gbps 8-Channel (Unidirectional) Repeater With Input Equalization

DS125BR800A
www.ti.com
SNLS467 – NOVEMBER 2013
Table 1. Pin Descriptions⁽¹⁾ (continued)
Pin Name
SD_TH
Pin Number
26
I/O, Type
I, 4-LEVEL
Control Pins — Both Pin and SMBus Modes (LVCMOS)
RXDET
22
I, 4-LEVEL
RESERVED
23
VDD_SEL
25
I, 4-LEVEL
INPUT
PWDN
52
I, LVCMOS
Outputs
ALL_DONE
Power
VIN
VDD
GND
27
O, LVCMOS
24
Power
9, 14, 36, 41, 51 Power
DAP
Power
Pin Description
Controls the internal Signal Detect Threshold.
See Table 6.
The RXDET pin controls the receiver detect function. Depending on the
input level, a 50Ω or >50kΩ termination to the power rail is enabled.
See Table 5.
Float (leave pin open) = Normal Operation
Controls the internal regulator
FLOAT = 2.5V mode
Tie GND = 3.3V mode
Tie High = Low power - power down
Tie GND = Normal Operation
See Table 5.
Valid Register Load Status Output
HIGH = External EEPROM load failed or incomplete
LOW = External EEPROM load passed
In 3.3V mode, feed 3.3V to VIN
In 2.5V mode, leave floating
Power supply pins CML/analog
2.5V mode, connect to 2.5V supply
3.3V mode, connect 0.1uF cap to each VDD pin
Ground pad (DAP - die attach pad)
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