User's Manual

46
V
DD_AUDIO
V
DD/Low-voltage regulator output
Positive suppl
y
output for audio circuitr
y
and 1.5V
re
g
ulated output
(
from internal low-voltage
re
g
ulator
)
47 SPK_R_N
A
nalo
g
ue Speaker output ne
g
ative, ri
g
ht
48 SPK_R_P
A
nalo
g
ue Speaker output positive, ri
g
ht
49 SPK_L_N
A
nalogue Speaker output ne
g
ative, left
50 SPK_L_P
A
nalo
g
ue Speaker output positive, left
51 PIO[3]
Bi-directional with programmable strength
internal pull-up/down
Pro
g
rammable input/output line
52 PIO[1]
Bi-directional with programmable strength
internal pull-up/down
Pro
g
rammable input/output line
(
external TXEN
)
53 PIO[2]
Bi-directional with programmable strength
internal pull-up/down
Pro
g
rammable input/output line
54 PIO[0]
Bi-directional with programmable strength
internal pull-up/down
Programmable input/output line (external RXEN)
55 GND Ground Di
g
ital Ground
56 GND Ground Di
g
ital Ground
57
A
NT RF RF In/Out
58 GND Ground Di
g
ital Ground
59
A
IO[1] Bi-directional
A
nalo
g
ue pro
g
rammable input/ output line
60
V
DD_ANA
V
DD/Low-voltage regulator output
Positive suppl
y
output for analo
g
ue circuitr
y
and
1.5V re
g
ulated output
(
from internal low-voltage
re
g
ulator
)
61
A
IO[0] Bi-directional
A
nalo
g
ue pro
g
rammable input/ output line
62 GND Ground Di
g
ital Ground
63 USB_DP Bi-directional
USB data plus with selectable internal 1.5kΩ
pull-up resistor
64 USB_DN Bi-directional USB data minus
(1)When UART port is not used, VDD_ PIO may be supported 1.7~3.6 voltage.