A B C C1 4 VDD_325 TXD-T 1 TXD OSC2 28 DTR-T 2 DTR_N OSC1 27 PLL_TEST 26 GND_A 25 NC 24 GP1 23 GP0 22 GND 21 RTS-T 3 RTS_N 4 VDD_325 C3 RXD-R 5 0.1U RI-R 6 7 3 RXD RI_N GND PL-2303HX 8 NC DSR-R 9 DSR_N VDD_5 20 DCD-R 10 DCD_N NC 19 CTS-R 11 CTS_N GND 18 12 SHTD# VO_33 17 DM 16 DP 15 SHTD# EE_CLK 13 EE_DATA 14 EE_CLK EE_DATA R4in & R4out ACTIVE in SHUTDOWN Y1 12M R5in & R5out ACTIVE in SHUTDOWN U2 C2 10P 1 VDD_325 RP1 DSR-R DCD-R CTS-R RI-R 1 2 3 4 8 7 6 5 220k/0603 RXD-R C4 0.1U C6 R1 220K VCC5 0.1U 1. The pin4 voltage level is defined by your application. ( Tolerant range : 2.0 ~ 3.3 V ) C10 VCC5 C12 L1 FBM0805PT800S C13 10U/16V R3in 27 3 T2out R3out 26 DCD-R DSR-RC 4 R2in SD# 25 SHTD# DSR-R 5 R2out EN 24 R3 R4 27 27 L2 FBM0805PT800S VO_33 C14 6 T2in R4in 23 RI-RC DTR-T 7 T1in R4out 22 RI-R CTS-R 8 R1out T4in 21 RTS-T CTS-RC 9 R1in T3in 20 10 GND R5out 19 RXD-R 11 VCC R5in 18 RXD-RC 12 C1+ V- 17 13 V+ C2- 16 14 C1- C2+ 15 1 0.1U/16V C11 0.1U/16V SP213EH 1 VCC 2 D- 3 D+ 4 5 6 GND C_GND C_GND P1 2 5 9 4 8 3 7 2 6 1 RI-RC DTR-TC CTS-RC TXD-TC RTS-TC RXD-RC DSR-RC DCD-RC USB-B-TYPE R5 4.7K 3 C8 0.1U 0.1U U3 VCC5 TXD-T CON1 0.1U 2. If your application don't need transceiver (SP213EH). ( Tolerant range : 1.8 ~ 3.3 V ) T1out 0.1U 4 DCD-RC 2 VCC5 R2 1.5K RTS-TC 28 TXD-TC VO_33 C9 T4out T3out DTR-TC C5 0.1U C7 10U/16V VDD_325 : 2 E SP213EH : 10P U1 D CONNECTOR DB9 R6 4.7K 1 A0 VCC 8 2 A1 NC 7 3 A2 SCL 6 EE_CLK 4 GND SDA 5 EE_DATA 1 L3 FBM0805PT800S 24C02 Title Prolific Technology Inc Size A Date: A B C Document Number PL-2303HX DEMO BOARD Monday, February 16, 2004 D Sheet Rev 1.0 1 of E 1