User's Manual


PCS3 Hardware Interface Description
6.5 Pad Assignment and Signal Description
PCS3_HD_v01.000
Confidential / Preliminary
Page 70 of 101 2013-10-21
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Table 22: Signal description
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Function Signal name IO Signal form and level Comment
Pulse Code
Modulation
(PCM)
PCM_IN I
V
IL
max = 0.6V at 30µA
V
IH
min = 1.20V at -30µA
V
IH
max = 2V
V
OL
max = 0.45V at I = 2mA
V
OH
min = 1.35V at I = -2mA
V
OH
max = 1.85V
In Master mode PCM_FSC
and PCM_CLK are output
signals
1
.
In Slave mode PCM_FSC
and PCM_CLK are input
signals. See also Section
3.9.1.
If unused keep line open.
PCM_CLK I/O
PCM_FSC I/O
PCM_OUT O
Inter IC
interface
(I
2
C)
I2CDAT O VOLmax = 0.45V at I = 2mA
VOHmin = 1.35V at I = -2mA
VOHmax = 1.85V
I2CCLK O
Power
Indicator
PWR_IND O
V
IH
max = 5.5V
V
OL
max = 0.4V at Imax = 2mA
PWR_IND (Power Indica-
tor) notifies the module’s
on/off state.
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PWR_IND is an open col-
lector that needs to be con-
nected to an external pull-
up resistor. Low state of the
open collector indicates
that the module is on. Vice
versa, high level notifies the
power-down mode.
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Therefore, the signal may
be used to enable external
voltage regulators which
supply an external logic for
communication with the
module, e.g. level convert-
ers.
USB VUSB_IN I
V
IN
min = 3.0V
V
IN
max = 5.25V
Active current
I
I
typ = 105µA (max 130µA)
Suspend current
I
I
typ = 135µA (max 200µA)
If the USB interface is not
used please connect this
line to GND.
USB_DN I/O
All electrical characteristics according
to USB Implementers’ Forum, USB
2.0 Full Speed Specification.
If lines are unused keep
lines open.
USB only support Full
Speed mode
operation
requires a differential
impedance of 90ohm
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USB_DP I/O
Host
wakeup
WAKEUP O
V
OL
max = 0.45V at I = 2mA
V
OH
min = 1.35V at I = -2mA
V
OH
max = 1.85V
Can be used as a host
wakeup line similar to
RING0 (see Section
3.10.4)
1
.