5 Pin Configuration and Functions

Figure 5-1 RGE Package, 24-Pin (VQFN) (Top View)

Table 5-1 Pin Functions

PIN		I/O	DESCRIPTION
NAME	NO.	I/O	DESCRIPTION
RX1N	8	Differential I	Differential input for 5Gbps negative signal on Channel 1
RX1P	9	Differential I	Differential input for 5Gbps positive signal on Channel 1
TX1N	23	Differential O	Differential output for 5Gbps negative signal on Channel 1
TX1P	22	Differential O	Differential output for 5Gbps positive signal on Channel 1
RX2N	20	Differential I	Differential input for 5Gbps negative signal on Channel 2
RX2P	19	Differential I	Differential input for 5Gbps positive signal on Channel 2
TX2N	11	Differential O	Differential output for 5Gbps negative signal on Channel 2
TX2P	12	Differential O	Differential output for 5Gbps positive signal on Channel 2
EQ1	2	I, CMOS	Sets the receiver equalizer gain for Channel 1. 3-state input with integrated pull-up and pull-down resistors. EQ1 = Low = 3 dB EQ1 = Mid = 6 dB EQ1 = High = 9 dB
DE1	16	I, CMOS	Sets the output de-emphasis for Channel 1. 3-state input with integrated pull-up and pull-down resistors. DE1 = Low = 0 dB DE1 = Mid = -3.5 dB DE1 = High = -6.2 dB
OS1	15	I, CMOS	Sets the output swing (differential voltage amplitude) for Channel 1. 2-state input with an integrated pull down resistor. OS1 = Low = 0.9 mV OS1 = High = 1.1 mV
EQ2	17	I, CMOS	Sets the receiver equalizer gain for Channel 2. 3-state input with integrated pull-up and pull-down resistors. EQ2 = Low = 3 dB EQ2 = Mid = 6 dB EQ2 = High = 9 dB
DE2	3	I, CMOS	Sets the output de-emphasis for Channel 2. 3-state input with integrated pull-up and pull-down resistors. DE2 = Low = 0 dB DE2 = Mid = -3.5 dB DE2 = High = -6.2 dB
OS2	4	I, CMOS	Sets the output swing (differential voltage amplitude) for Channel 2. 2-state input with an integrated pull down resistor. OS2 = Low = 0.9 mV OS2 = High = 1.1 mV
EN_RXD	5	I, CMOS	Enable. The device has a 660-kΩ pulldown resistor. Device is active when EN_RXD = High. Drive actively high or install a pullup resistor (recommend 4.7 KΩ) for normal operation. Does reset state machine.
RSV	14	I, CMOS	Reserved. Can be left as no-connect.
VCC	1, 13	P	Positive power supply. Power supply is 3.3 V.
GND	10, 21, PAD	G	Ground. PAD must be connected to Ground. Pins 10, 21 can be connected to Ground or left unconnected.
NC	6, 7, 18, 24	—	No connection. These pins can be tied to any desired voltages including connecting them to GND.