CMX868 Reference Design and Demonstration Board
DE8681
TIP J1
RING J2
E1
C11
C12
J61 VDD
T1
R13
C8
D1
R8
R6
R5
R9
R1
C10
D6
/RESET J24
GND J26
C24
C7
R7
R4
J41 GND
J39
J38
J37
J36
J35
J34
J33
/DCDTTL
/CTSTTL
/DSRTTL
/RITTL
/TXDTTL
/RXDTTL
/RTSTTL
X1
U2 C3
C5
C4
U1
DCDIND J29
RXDIND J30
DTRIND J31
TXDIND J32
C2
Figure 2, socket section pinout.
Users with a revision B board, PCB024B, must note that the polarity for C11 shown on the
silk screen is incorrect. Figures 2 and 5 of this document show corrected polarity.
C6
C23
C1
C13
©
2004 CML Microsystems Plc
9
UM8681/3