Icom ID-51E

4 - 9
Pin
No.
Line Name Description I/O
J13 IOEN Expander chip enable. O
J15 DCSFT
DSP clock shift control.
L=+600 Hz shifted.
O
J2 BPLLSTB PLL serial strobe. (Band B) O
J4 RTC_IRQ
Interrupt detection from the real
time clock IC.
L= Alerm detected.
I
K1 ANOISE
Noise level detection. (Band A)
H= Noise signal is detected.
I
K13 BAFMUTE
RX AF mute control. (Band B)
L= Mute.
O
K14 D_AS
Modulation signal line (DV/FM)
switching control.
H= While transmitting in the DV
mode.
O
K15 DAFS
2nd IF fi lter (digital/analog) switch-
ing control.
H= While receiving in the DV
mode.
O
K2 EBUSY
CI-V bus line communication sta-
tus detection.
L= Busy.
I
K3 IOSTB1 Expander serial strobe. O
L1 R3C
R3 line control.
L= While recieiving.
O
L12 SQL
SQL key input.
L= Pushed.
I
L13 BNOISE
Noise level detection (Band B).
H= Noise signal is detected.
I
L14 PSC
5VS power supply line control.
L= While in the power save mode.
O
L15 3VC
3VS power supply line control.
H= Power ON.
O
L2 PLAY
Modulation signal line switching
control.
H= Recorded audio is transmitted.
O
L3 BAM
AM （Air band）receive circuit
power control.
L= While receiving in the AM
mode.
O
M1 DASTB1 D/A converter serial strobe. O
M12 TX232
UART data (RS-232C).
(4800/9600/38400 bps)
O
M14 ESIO EEPROM serial data. I/O
M15 T3C
Transmit circuit power control.
H= While transmitting.
O
M2 CLOUT
CI-V/CLONE UART data.
(300–38400 bps)
O
M5 DSP_STB DSP serial strobe. O
M6 DSPC
DSP power control.
H=
DSP is ON.
O
M7 AR3C
Receive circuit power control.
(Band A)
L=While receiving on band A.
O
M8 LCDRS LCD driver serial data. O
M9 LCDCS LCD driver chip select. O
N1 CLIN
CI-V/CLONE UART data.
(300–38400 bps)
I
N12 G_HIB
GPS module operating mode
(Normal/Sleep) switching control.
L= While in the sleep mode.
O
Pin
No.
Line Name Description I/O
N15 ECK EEPROM serial clock. O
N2 SD_SENC
microSD card insert detection.
L=Inserted.
I
N3 SD_TXD
Serial data to the attached mi-
croSD card.
O
N4 DSP_SI DSP serial data. I
N6 RTC_SDA
Serial data to/from the real time
clock IC.
I/O
N7 APLLSTB PLL serial strobe. (Band A) O
N9 LCDDT LCD driver serial data. O
P1 SD_CS
Chip select to the attached mi-
croSD card.
O
P12 GPSC
GPS module power control.
H= Power ON.
O
P13 RX232
RS-232C UART data.
(4800/9600 bps)
I
P14 INTPTT
[PTT] key input.
L=Pushed.
I
P2 SD_SCK
Serial clock to the attached mi-
croSD card.
O
P4 DSP_CK DSP serial clock. O
P5 DSP_PD
DSP power down control.
H= Power down.
O
P6 LCDRES
LCD driver reset.
L=Reset.
O
R1 SD_RXD
Serial data from the attached mi-
croSD card.
I
R13 AFON AF AMP power control. O
R14 EXTPTT External PTT input. I
R2 DSP_SO DSP serial data. O
R5
DSP_RESET
DSP reset control.
L=Reset.
O
R6 RTC_SCL
Serial clock to the real time clock
IC.
O
R8 LCDCK LCD driver serial clock. O
• CPU (LOGIC UNIT: IC5) (continued)