ZS-BTY50/BTY52/BTY55
54
Pin No.
Pin Name
I/O
Description
57 to 59
I_SUFFIX_1 to
I_SUFFIX_3
I
Destination setting terminal
60
VCC2
-
Power supply terminal (+3.3V)
61
I_CHARGE
I
Battery charge function setting terminal “H”: battery charge is set
62
VSS
-
Ground terminal
63
BATT_LEVEL_DET
I
Battery level detection signal input terminal (BTY55)
64
BATT_FLAT_DET
I
Battery
fl
at voltage detection signal input terminal (BTY55)
65
NC
-
Not used
66
I_WAKE UP
I
Wake up signal input terminal
67
BATT_TEMP_DET
I
Battery temperature detection signal input terminal (BTY55)
68
AU_LEVEL_DET
I
Audio level detection signal input from audio level detect IC
69
DSP3.3VCHECK
I
USB power supply check signal input terminal (BTY52/BTY55)
70
SYS_EN
O
Main power supply on/off control signal output terminal “H”: power on
71
LCD_UART_INT
-
Not used
72
AC_CHK
I
AC/DC input detection signal input terminal “L”: AC, “H”: DC
73
BT_MUTE
I
Bluetooth muting on/off control signal input from the Bluetooth module “L”: muting on
74
BATT_LEVEL_EN
O
Battery level detection enable signal output terminal (BTY55)
75
BT_TX
O
Serial data output to the Bluetooth module
76
BT_RX
I
Serial data input from the Bluetooth module
77
CHG_CURRENT_
SEL
O
Battery charge current selection signal output terminal (BTY55)
78
W_B_CURRENT
O
LED current selection signal output terminal for illumination (blue) indicator
79
RED_LED_SW
O
LED drive signal output terminal for illumination (red) indicator “H”: LED on
80, 81
RED_CURRENT1,
RED_CURRENT2
O
LED current selection signal output terminal for illumination (red) indicator
82
BT_CTS
O
Clear to send signal output to the Bluetooth module
83
BT_RTS
I
Request to send signal input from the Bluetooth module
84
BT_RESET
O
Reset signal output to the Bluetooth module “L”: reset
85
I-JOG-A
I
Jog dial pulse input from the rotary encoder (A phase input) (for volume)
86
I-JOG-B
I
Jog dial pulse input from the rotary encoder (B phase input) (for volume)
87
ERP_DET
I
EUP audio detection signal input terminal Not used
88
VHCHECK
I
Main power supply voltage detection signal input terminal
89
6VCHECK
I
+6V regulator output power supply voltage detection signal input terminal
90 to 93
KEYIN4 to KEYIN1
I
Top panel key input terminal
94
AVSS
-
Ground terminal
95
LCD_INH
O
Display on/off control signal output to the liquid crystal display driver “H”: display on
96
VREF
I
Reference voltage (+3.3V) input terminal
97
AVDD
-
Power supply terminal (+3.3V)
98
LCD_CE
O
Chip enable signal output to the liquid crystal display driver
99
LCD_SD
O
Serial data output to the liquid crystal display driver
100
LCD_CLK
O
Serial data transfer clock signal output to the liquid crystal display driver
