Service manual

ICD-UX71/UX71F/UX81/UX81F/UX91F
26
MAIN BOARD IC5001 LC823403B-08B-E (SYSTEM CONTROL, D/A CONVERTER)
Pin No. Pin Name I/O Description
B2 TEST1 I Test pin 1
A1 TEST2 I Test pin 2
C2 TEST3 I Test pin 3
B1 TEST4 I Test pin 4
D2 TEST5 I Test pin 5
C1 TEST6 I Test pin 6
C3 TCK I JTAG test clock signal input
D3 RTCK O JTAG test returned clock signal output
D1 NTRST I JTAG test reset signal input
E2 EXA16(A15) O External memory address bit 16 signal output NOR address line signal output
D4 TDI I JTAG test data signal input
E3 EXA15(A14) O External memory address bit 15 signal output NOR address line signal output
E1 EXA14(A13) O External memory address bit 14 signal output NOR address line signal output
F2 TMS I JTAG test mode select signal input
E4 EXA13(A12) O External memory address bit 13 signal output NOR address line signal output
E5 EXA12(A11) O External memory address bit 12 signal output NOR address line signal output
F3 TDO O JTAG test data signal output
F1 NRES I Reset signal input
G2 EXA11(A10) O External memory address bit 11 signal output NOR address line signal output
F4 Vdd1 — Digital power supply pin (+1.0V)
F5 EXA10(A9) O External memory address bit 10 signal output NOR address line signal output
G3 Vss — Digital ground pin
H2 EXA9(A8) O External memory address bit 9 signal output NOR address line signal output
G1 Vdd2 — Digital power supply pin (+3.1V)
G4 EXA20(A19) O External memory address bit 20 signal output NOR address line signal output
G5 NCS0 O External memory chip select signal output 0 NOR chip select signal output
H3 EXA21(P2E) O External memory address bit 21 signal output NOR address line signal output
H1 NCS1 O External memory chip select signal output 1 Not used in this set. (Open)
J2 NWRENWRL/NWE O External memory write/external memory write low byte signal output
H4 NCS2(P20) O External memory chip select 2 signal output LCD chip select signal output
J1 NCS3(P10) O External memory chip select 3 signal output RTC chip select signal output
H5 NRESET I Flash reset signal input Not used in this set. (Open)
K2 NLBEXA0 O
External memory address bit 0/external memory low byte select signal output
Not used in this set. (Open)
K1 NHBNWRH O
External memory write/external memory write high byte signal output
Not used in this set. (Open)
J3 PHI(P11) O AHB bus clock signal output (32.768kHz) FM DX/Local change signal output
J4 EXA19(A18) O External memory address bit 19 signal output NOR address line signal output
K3 EXA18(A17) O External memory address bit 18 signal output NOR address line signal output
L2 EXTFIQ(P2F) I External FIQ interruption signal input Not used in this set. (Open)
L1 SCK0 O Serial interface 0 clock signal output RTC/LCD clock signal output
K4 EXA8(A7) O External memory address bit 8 signal output NOR address line signal output
J5 EXA7(A6) O External memory address bit 7 signal output NOR address line signal output
M1 SDO0 O Serial interface 0 data signal output RTC/LCD data signal output
M2 EXA6(A5) O External memory address bit 6 signal output NOR address line signal output
L3 SDI0 I Serial interface 0 data signal input RTC data signal input
L4 Vdd1 — Digital power supply pin (+1.0V)
K5 EXA5(A4) O External memory address bit 5 signal output NOR address line signal output
M3 Vss — Digital ground pin
N1 EXA4(A3) O External memory address bit 4 signal output NOR address line signal output
N2 Vdd2 — Digital power supply pin (+3.1V)
P1 EXA3(A2) O External memory address bit 3 signal output NOR address line signal output
N3 EXA2(A1) O External memory address bit 2 signal output NOR address line signal output