
XT65/XT75 Hardware Interface Overview
6.5 Pin Assignment and Signal Description
s
XT65_XT75_HO_v00.130
Page 39 of 67
2006-10-12
Confidential / Preliminary
SPI
Serial
Periph-
eral Inter-
face
SPIDI
I
V
OL
max = 0.2V at I = 2mA
V
OH
min = 2.55V at I = -0.5mA
V
OH
max = 3.05V
V
IL
max = 0.8V
V
IH
min = 2.15V,
V
IH
max = V 0.3V = 3.05V
If the Serial Peripheral Interface is
active the I
2
C interface is not avail-
able.
If lines are unused keep pins open.
I2CDAT_SPIDO
O
I2CCLK_SPICLK O
SPICS
O
USB
VUSB_IN
I
V
IN
min = 4.0V
V
IN
max = 5.25V
All electrical characteristics
according to USB Implementers’
Forum, USB 2.0 Full Speed Spec-
ification.
Without Java: USB port
Under Java: Debug interface for
development purposes.
If lines are unused keep pins open.
USB_DN
I/O
Differential Output Crossover volt-
age Range
V
CRS
min = 1.5V, V
CRS
max = 2.0V
Driver Output Resistance
Z
DRVtyp
= 32Ohm
USB_DP
I/O
Digital
Audio
interface
DAI0 (USC0)
I/O
V
OL
max = 0.2V at I = 2mA
V
OH
min = 2.55V at I = -0.5mA
V
OH
max = 3.05V
V
IL
max = 0.8V
V
IH
min = 2.15V
V
IH
max = V 0.3V = 3.05V
DAI0…DAI6 are configurable as
PCM interface
DAI1 (USC1)
I/O
DAI2 (USC2)
I/O
DAI3 (USC3)
I/O
DAI4 (USC4)
I/O
DAI5 (USC5)
I/O
DAI6 (USC6)
I/O
General
Purpose
Input/Out-
put
GPIO1
I/O
V
OL
max = 0.2V at I = 2mA
V
OH
min = 2.55V at I = -0.5mA
V
OH
max = 3.05V
V
IL
max = 0.8V
V
IH
min = 2.15V,
V
IH
max = V 0.3V = 3.05V
All pins which are configured as
input must be connected to a pull-
up or pull-down resistor.
If lines are unused (not config-
ured) keep pins open.
Alternatively, the GPIO10 pin can
be configured as a pulse counter
for pulse rates from 0 to 1000
pulses per second.
GPIO2
I/O
GPIO3
I/O
GPIO4
I/O
GPIO5
I/O
GPIO6
I/O
GPIO7
I/O
GPIO8
I/O
GPIO9
I/O
GPIO10
I/O
Table 17:
Signal description
Function
Signal name
IO
Signal form and level
Comment