Acer TM7100 Series Service Manual page 93

Table 2-3 NM2160 Pin Descriptions
Pin name Number
98 R
97 G
96 B
101 REXT
TV interface
79 CSYNC
74 NTSC_PAL
147 FSC
98 R
97 G
96 B
Power Management
76 Standby/
Status1
77 Suspend
77 Suspend
I/O
O
RED This DAC analog output drives the CRT interface
(Analog
)
O
GREEN This DAC analog output drives the CRT interface
(Analog
)
O
BLUE This DAC analog output drives the CRT interface
(Analog
)
I
DAC Current reference This pin is used as a current reference by
(Analog
the internal DAC. Please refer to the NM2160 system schematics
)
for the external circuit
O
Composite Sync This output is the composite synchronization
T/S
signal for RGB-to-NTSC or PAL/SECAM External Analog
Encoders
O
NTSC/PAL/SECAM Encoding Selection This pin is used to
T/S
select the mode NTSC or PAL/SECAM in which the external
analog encoder need to be driven
O
Sub-Carrier Frequency Selection This pin provides an
appropriate Sub-carrier frequency 1xfsc or 4xfsc to an external
NTSC or PAL/SECAM analog encoder
O
RED This DAC analog video red component output is to drive the
(Analog
external RGB-to-NTSC or PAL/SECAM analog encoders
)
O
GREEN This DAC analog video green component output is to
(Analog
drive the external RGB-to-NTSC or PAL/SECAM analog encoders
)
O
BLUE This DAC analog video blue component is to drive the
(Analog
external RGB-to-NTSC or PAL/SECAM analog encoders external
)
I/O
Standby/Status1 The direction of the pin is controlled by GR18
bit 3. In output mode, this pin indicates the state of standby mode.
The state of this pin is reflected in register CR25 bit 5 and can be
used as a status pin
I/O
Suspend This pin can be configured as control Suspend input or
status Suspend output. The active high input mode is used for
controlling hardware Suspend. When asserted NM2160 is forced
into suspend mode where all the inputs are disabled and chip
goes into the low power mode NM2160 will come out of suspend
only by de-asserting this pin
I/O During output mode, this pin will indicate the software suspend
status
Description