6 Pin Configuration and Functions

Figure 6-1 LMK1D1212: RHA Package 40-Pin VQFN Top View

Figure 6-2 LMK1D1216: RGZ Package 48-Pin VQFN Top View

Table 6-1 Pin Functions

PIN			TYPE⁽¹⁾	DESCRIPTION
NAME	LMK1D1212	LMK1D1216	TYPE⁽¹⁾	DESCRIPTION
DIFFERENTIAL/SINGLE-ENDED CLOCK INPUT
IN0_P	9	10	I	Primary: Differential input pair or single-ended input
IN0_N	8	9	I	Primary: Differential input pair or single-ended input
IN1_P	2	3	I	Secondary: Differential input pair or single-ended input. Note that INP0, INN0 are used indistinguishably with IN0_P, IN0_N.
IN1_N	3	4	I
INPUT SELECT
IN_SEL	1	2	I	Input Selection with an internal 500-kΩ pullup and 320-kΩ pulldown resistor; selects input port. See Table 9-2.
AMPLITUDE SELECT
AMP_SEL	10	11	I	Output amplitude swing select with an internal 500-kΩ pullup and 320-kΩ pulldown. See Table 9-3.
BIAS VOLTAGE OUTPUT
V_{AC_REF0}	7	8	O	Bias voltage output for capacitive coupled inputs. If used, TI recommends using a 0.1-µF capacitor to GND on this pin.
V_{AC_REF1}	4	5	O
DIFFERENTIAL CLOCK OUTPUT
OUT0_P	12	14	O	Differential LVDS output pair number 0
OUT0_N	13	15	O	Differential LVDS output pair number 0
OUT1_P	14	16	O	Differential LVDS output pair number 1
OUT1_N	15	17	O	Differential LVDS output pair number 1
OUT2_P	16	18	O	Differential LVDS output pair number 2
OUT2_N	17	19	O	Differential LVDS output pair number 2
OUT3_P	18	20	O	Differential LVDS output pair number 3
OUT3_N	19	21	O	Differential LVDS output pair number 3
OUT4_P	22	22	O	Differential LVDS output pair number 4
OUT4_N	23	23	O	Differential LVDS output pair number 4
OUT5_P	24	25	O	Differential LVDS output pair number 5
OUT5_N	25	26	O	Differential LVDS output pair number 5
OUT6_P	26	27	O	Differential LVDS output pair number 6
OUT6_N	27	28	O	Differential LVDS output pair number 6
OUT7_P	28	29	O	Differential LVDS output pair number 7
OUT7_N	29	30	O	Differential LVDS output pair number 7
OUT8_P	32	31	O	Differential LVDS output pair number 8
OUT8_N	33	32	O	Differential LVDS output pair number 8
OUT9_P	34	33	O	Differential LVDS output pair number 9
OUT9_N	35	34	O	Differential LVDS output pair number 9
OUT10_P	36	35	O	Differential LVDS output pair number 10
OUT10_N	37	36	O	Differential LVDS output pair number 10
OUT11_P	38	38	O	Differential LVDS output pair number 11
OUT11_N	39	39	O	Differential LVDS output pair number 11
OUT12_P	—	40	O	Differential LVDS output pair number 12
OUT12_N	—	41	O	Differential LVDS output pair number 12
OUT13_P	—	42	O	Differential LVDS output pair number 13
OUT13_N	—	43	O	Differential LVDS output pair number 13
OUT14_P	—	44	O	Differential LVDS output pair number 14
OUT14_N	—	45	O	Differential LVDS output pair number 14
OUT15_P	—	46	O	Differential LVDS output pair number 15
OUT15_N	—	47	O	Differential LVDS output pair number 15
SUPPLY VOLTAGE
V_DD	5, 6, 11, 20, 31, 40	6, 7, 13, 24, 37, 48	P	Device power supply (1.8 V, 2.5 V, or 3.3 V)
GROUND
GND	21, 30	1, 12	G	Ground
MISC
DAP	DAP	DAP	G	Die Attach Pad. Connect to the printed circuit board (PCB) ground plane for heat dissipation.

(1) G = Ground, I = Input, O = Output, P = Power