33
• HAND MAIN BOARD IC401 R6797-71 (HUMMINGBIRD ASIC)
Pin No.
Pin Name
I/O
Function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
VSSC
VDDP
VSSP
OSCO
OSCI
RING ON/OFF
GPOC0/SWCTL
KEYPADR3
KEYPADR2
KEYPADR1
KEYPADR0
JOG-B
JOG-A
HB-SELECT
VDDP
VSSP
HEADSET DET
N/A
VDDC
VSSC
N/A
I2C-CLK
I2C-DATA
ARTI
PARKP
ARTO
FSYNC
SIN
SOUT
CDCMCLK
CAVSS
CDCDATA0
CDCDATA1
CDCFRAME
CDCPOR
CAVSS
LINEIN
MICINN
MICINP
MICBIAS
CDCVREF
CDCAGND
CAVDD
LINEO
CAVSS
SPKROP
SPKRON
CDVSS
CDVDD
CAVSS
–
–
–
O
I
I
I
I
I
I
I
–
–
I
–
–
–
–
–
–
I/O
O
I/O
I
I
O
–
I
O
–
I
O
I
–
I
I
I
I
I
O
O
O
I
O
I
O
O
I
I
I
VSS supply to core
VDD supply to pad ring
VSS supply to pad ring
9.6 MHz crystal oscillator output
9.6 MHz crystal oscillator input
Detection signal input of the ringer coming
Switch control read input
Keypad read input
Keypad read input
Keypad read input
Keypad read input
Not used (open)
Not used (open)
HAND/BASE select input
VDD supply to pad ring
VSS supply to pad ring
Not used (open)
Not used (open)
VDD supply to core
VSS supply to core
Not used (open)
Clock signal output to the EEPROM
Two-way data bus with the EEPROM
ART input
Park input; active low on base station, active high on handset
ART output
Frame sync
Serial data input
Serial data output
Main clock input
Not used (open)
Analog 0V power supply
Codec data output
Codec data input
Codec flame
Reset input, active low
Analog 0V power supply
Analog input to line pre-amp, ADC channel
Not used (open)
Negative differential analog input to microphone pre-amp, ADC channel
Positive differential analog input to microphone pre-amp, ADC channel
2.2V nominal DC bias source for electret microphone
Analog reference voltage output
Bypass to AVSS with 0.1mF capacitor
Analog ground bias output
Bypass to AVSS with 0.1mF capacitor
Analog power supply
Line driver output, DAC channel
Not used (open)
Analog 0V power supply
Positive speaker driver output, DAC channel
Negative speaker driver output, DAC channel
Digital 0V power supply
Digital power supply, 2.7-5.5 Volts
Analog 0V power supply
