Service manual

ICD-UX71/UX71F/UX81/UX81F/UX91F
28
Pin No. Pin Name I/O Description
N12 SDAT3 I/O SD card data bit 2 signal input/output Connected to ground in this set.
R12 SDAT4 I/O SD card data bit 3 signal input/output Connected to ground in this set.
P12 VDDRTC — Digital power supply pin (+1.0V)
P13 VSSRTC — Digital ground pin
R13 XOUT32K O RTC oscillation amplifi er signal output (32.768kHz) Not used in this set. (Open)
T13 XIN32K I RTC oscillation amplifi er signal input (32.768kHz)
R14 VDET I Voltage detection signal input (Pull up 3.1V)
T14 RTCINT O RTC interruption signal output Not used in this set. (Open)
T15 BACKUPB I RTC operation mode signal input (Pull up 3.1V)
R15 EXTINT0(P21) I External interruption bit 0 signal input FM interruption signal input
T16 EXTINT1(P22) I External interruption bit 1 signal input RTC interruption signal input
P15 EXTINT2(P23) I External interruption bit 2 signal input Hold interruption signal input
R16 EXTINT3(P24) I External interruption bit 3 signal input Key wake up signal input
P14 EXTINT4(P25) I External interruption bit 4 signal input Mic detection signal input
N15 EXTINT5(P26) I External interruption bit 5 signal input HP detection signal input
N13 EXTINT6(P27) I External interruption bit 6 signal input USB detect interruption signal input
P16 EXA1(A0) O External memory address bit 1 signal output NOR address line signal output
N14 NCE I Flash chip select signal input Not used in this set. (Open)
M12 VssF — Flash ground pin Not used in this set. (Open)
N16 DOUT O PCM data signal output
M15 DIN I PCM data signal input
M13 NRD(NOE) O External memory read signal output NOR read signal output
M14 EXD0(DQ0) I/O External memory data bus bit 0 signal input/output NOR data bus signal input/output
L12 BCK I/O PCM bit clock signal input/output
M16 EXD8(DQ8) I/O External memory data bus bit 8 signal input/output NOR data bus signal input/output
L15 VDD1 — Digital power supply pin (+1.0V)
L13 EXD1(DQ1) I/O External memory data bus bit 1 signal input/output NOR data bus signal input/output
L14 VSS — Digital ground pin
L16 EXD9(DQ9) I/O External memory data bus bit 9 signal input/output NOR data bus signal input/output
K15 VDD2 — Digital power supply pin (+3.1V)
K12 EXD2(DQ2) I/O External memory data bus bit 2 signal input/output NOR data bus signal input/output
K13 LRCK(P12) I/O PCM LR clock signal input/output
K16 EXD10(DQ10) I/O External memory data bus bit 10 signal input/output NOR data bus signal input/output
K14 MCLK(P13) I/O PCM main clock signal input/output Not used in this set. (Open)
J15 EXD3(DQ3) I/O External memory data bus bit 3 signal input/output NOR data bus signal input/output
J12 SCL(P28) I/O FM I2C clock signal input/output
J16 SDA(P29) I/O FM I2C data signal input/output
J13 EXD11(DQ11) I/O External memory data bus bit 11 signal input/output NOR data bus signal input/output
J14 TXD2(P2C) O UART2 transmission data signal output
H13 RXD2(P2D) I UART2 reception data signal input Backlight control signal input
H15 VDDF — Flash power supply pin (+3.3V) Not used in this set. (Open)
H16 EXD4(DQ4) I/O External memory data bus bit 4 signal input/output NOR data bus signal input/output
H12 EXD12(DQ12) I/O External memory data bus bit 12 signal input/output NOR data bus signal input/output
H14 VDD1 — Digital power supply pin (+1.0V)
G15 EXD5(DQ5) I/O External memory data bus bit 15 signal input/output NOR data bus signal input/output
G16 VSS — Digital ground pin
G14 EXD13(DQ13) I/O External memory data bus bit 13 signal input/output NOR data bus signal input/output
G13 VDD2 — Digital power supply pin (+3.1V)
F15 EXD6(DQ6) I/O External memory data bus bit 6 signal input/output NOR data bus signal input/output
F16 EXD14(DQ14) I/O External memory data bus bit 14 signal input/output NOR data bus signal input/output
F14 EXD7(DQ7) I/O External memory data bus bit 7 signal input/output NOR data bus signal input/output
G12 EXD15(DQ15) I/O External memory data bus bit 15 signal input/output NOR data bus signal input/output
E16 VSSF — Flash ground pin Not used in this set. (Open)
E15 EXA17(A16) O External memory address bit 17 signal output NOR address data line signal output