PIN CONNECTIONS
PIN CONNECTIONS
VBUS
17
20
19
18
16
TRANSPARENT
TOP VIEW
SPK_R
SPK_L
MIC
D+
D-
ISET
DM
DP
ID
1
2
3
4
5
15
14
OUT
I
2
C_SCL
I
2
C_SDA
INT
VDD
21
GND
13
12
11
6
7
8
9
10
VDDIO
RXD
TXD
NC
Figure 3. 34825 Pin Connections
Table 1. 34825 Pin Definitions
A functional description of each pin can be found in the Functional Pin Description section on
Pin Number
1
2
3
4
5
6
7
8
9
Pin Name
SPK_R
SPK_L
MIC
D+
D-
RXD
TXD
NC
VDDIO
Pin Function
Input
Input
Output
IO
IO
Output
Input
No Connection
Input
Formal Name
Speaker right channel
Speaker left channel
Microphone output
D+ of the USB
transceiver
D- of the USB
transceiver
UART receiver
UART transmitter
No Connection
IO power supply
Definition
Right channel input for speaker signals
Left channel input for speaker signals
Microphone output to the baseband of the cell phone system
D+ line of the USB transceiver
D- line of the USB transceiver
Receive line of the UART
Transmit line of the UART
No Connection
IO supply voltage. The VDDIO voltage is used as the reference voltage
for the I
2
C bus signals. This pin also functions as a hardware reset to
the IC.
No Connection
IC power supply input
Open-drain interrupt output
Data line of the I
2
C interface
Clock line of the I
2
C interface
The output of the power MOSFET pass switch
Open-drain output to set the charger current
VBUS line of the Mini or micro-USB connector
10
11
12
13
14
15
16
17
NC
VDD
INT
I
2
C_SDA
I
2
C_SCL
OUT
ISET
VBUS
No Connection
Input
Output
IO
Input
Output
Output
Input
No Connection
Power supply
Interrupt output
I
2
C data
I
2
C clock
Power output
Charge current setting
VBUS power supply
NC
34825
Analog Integrated Circuit Device Data
Freescale Semiconductor
3
FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
