1 2 3 4 GND T10 1 3 D J3 INSTALL EITHER R12 OR R48 AND R49 5 GND C63 4 T3 ETC1-1T-5 INSTALL EITHER R11 OR R50 AND R51 C62 5 1 4 GND C65 D 3 GND J2 ETC1-1T-5 GND C66 X1 J6 1 2 C69 C61 C64 C47 L19 C68 C C C46 12 37 AGND_PFD 38 AVDD_PFD 39 REF 40 REFB 41 OSCB 42 OSC 43 AGND_BG 44 AVDD_BG 45 RF_IN DGND_DAC J4 29 28 RF_INB SYNC_I/O RESET 27 AVDD_DIV DVDD1 26 AGND_DIV DGND1 CS SCLK 16 15 SDIO 14 13 SDO J7 DVDD2 GND C59 5 T9 B 1 INSTALL EITHER R10 OR R52 AND R53 25 J1 C60 4 DGND2 11 30 AGND_DRV PS2 B 10 DVDD_DAC GND 3 GND 24 INSTALL R54, R55 OR R56 PER FUNCTION OF J7 31 AVDD_DRV 23 9 IOUTB PS1 8 32 DRV_OUTB 22 T1 7 IOUT PS0 1 6 I/O_UPDATE 6 5 21 2 33 DRV_OUT 20 5 TERMINATION OPTION 34 AGND_CP PLL_LOCK/SYNC_IN 3 J5 35 AVDD_DAC2 SYNC/OUT 4 36 AGND_DAC2 19 4 AVDD_CP AVDD_DAC1 18 3 DVDD_I/O 2 CP_OUT AGND_DAC1 17 1 C2 CP_RSET C1 L17 46 DRV_RSET C67 47 DAC_RSET TERMINATION OPTION 48 AVDD_DAC L18 REFDES=U1 74LVC125A 9 C12 C3 C4 8 C14 10 U2 J9 74LVC125A A 74LVC125A 2 3 1 5 C10 C8 C7 C6 A W6 4 U2 C5 6 VCC;14 U2 U3 C11 W5 1 2 VCC;14 74LVC14A B 1 2 3 4 1 2 3 4 U6 D 1 19 D VCC;20 OE1 OE2 MASTER GND;10 74LVC541A U4 1 2 VBUS 3 4 5 6 7 C109 C C108 8 22PF 22PF X3 1 9 10 2 11 24MHZ J15 VBUS DD+ GND SHIELD SHIELD1 12 1 13 2 14 3 15 4 16 5 17 6 18 19 20 TP1 21 B 22 23 24 25 26 U5 1 2 3 4 8 27 7 28 NC1 VCC NC2 NC4 NC3 6 SCL VSS 5 SCA 9 11 1 8 12 3 7 13 5 PD5/FD13 56 PD4/FD12 6 14 7 PD6/FD14 55 PD3/FD11 5 15 9 54 PD2/FD10 4 16 11 GND1 53 PD1/FD9 3 17 13 CLKOUT 52 PD0/FD8 2 18 15 VCC1 51 WAKEUP GND2 VCC7 PD7/FD15 RDY0/SLRD RESET RDY1/SLWR GND6 17 50 19 MANUAL 21 49 W4 48 23 PC CONTROL 25 47 PA7/FLAGD/SLCS AVCC PA6/PKTEND XTALOUT XTALIN PA5/FIFOADR1 AGND PA4/FIFOADR0 VCC2 PA3/WU2 PA2/SLOE DPLUS 44 1 42 19 OE1 OE2 VCC6 39 8 12 3 VCC3 13 5 14 7 GND CTL2/FLAGC 38 IFCLK 37 CTL1/FLAGB 6 36 CTL0/FLAGA 5 15 9 35 4 16 11 34 3 17 13 33 2 18 15 PB7/FD7 PB1/FD1 PB6/FD6 PB2/FD2 PB5/FD5 PB3/FD3 PB4/FD4 P9 P10 P11 P12 P13 P14 P15 P16 P17 P18 P19 P20 P21 P22 P23 P24 P25 P26 8 10 12 14 16 18 20 C 22 24 26 74LVC541A 7 PB0/FD0 P8 6 SLAVE 1 GND4 P7 GND;10 11 VCC4 P6 VCC;20 9 VCC5 P5 4 U7 43 40 PA0/INT0 SDA P4 P1 PC GND3 GND5 P3 2 45 DMINUS SCL P2 46 41 PA1/INT1 RESERVED P1 17 32 19 31 21 30 23 29 25 P1 P2 P3 P4 P5 P6 P7 P8 P9 P10 P11 P12 P13 P14 P15 P16 P17 P18 P19 P20 P21 P22 P23 P24 P25 P26 2 4 6 8 10 B 12 14 16 18 20 22 24 26 P2 W15 W2 USB ID ENABLE 8PDIP DO NOT REMOVE PC CONTROL W3 C20 C15 REMOVE JUMPERS FOR MANUAL CONTROL A A USB STATUS 74LVC14A 74LVC14A C19 4 3 U3 6 VCC;14 5 U3 B 1 2 3 4 1 2 3 4 D D C33 C34 C35 C37 C39 C38 C44 C45 C41 C42 C43 C16 C17 U4 U2 U3 U5 U7 U6 C C C53 C30 C54 C56 C57 C55 REFER TO BOM FOR VALUES C88 B _F C89 _F C90 C91 _F _F 1 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 U8 GND B TB1 GND X 1 X 2 X 3 X 4 X 5 C52 POWER ENTRY A A B 1 2 3 4