Datasheet

Blackfin A-V EZ-Extender Manual 2-5
A-V EZ-Extender Hardware Reference
PPI1_D2
(Bi)
Multifunction net typically functions as the
D2 pin of
PPI1 but also can function as the data signal for the pro-
cessor’s two-wire interface (TWI). Used to program the
internal configuration registers of most video interfaces.
JP3.3/5/7,
JP5.3/4,
JP5.5/6
PPI1_D3
(Bi)
Multifunction net typically functions as the
D2 pin of
PPI1 but also can function as the data signal for the pro-
cessor’s TWI. Used to program the internal configuration
registers of most video interfaces.
JP3.4/6/8,
JP5.3/4,
JP5.5/6
FLAG_SDA
(Bi)
In systems whose processor does not have a TWI, the sig-
nal connects to one of the processor’s flag pins to emulate
the data pin of the TWI and to configure the internal
configure registers of most video interfaces.
JP3.3/5/7
FLAG_SCL_DIR_
CTRL
(Input)
In systems whose processor does not have a TWI, the sig-
nal connects to one of the processor’s flag pins to emulate
the clock signal of the TWI and to configure the internal
configure registers of most video interfaces.
JP3.4/6/8
PPI1_CLK
(Output)
The clock driving the EZ-KIT Lite’s
PPI1 clock input.
The source of this clock can be the
PPI0_CLK, the
onboard 27 MHz oscillator, or a socket accepting oscilla-
tors of other frequencies.
JP4.1/2,
JP4.3/4,
JP4.5/6,
JP4.7/8
PPI1_FS1
(Input)
The signal driven to the
HS signal of the FPDI. The out-
put going to the FPDI can be disabled by a jumper.
JP8.1/3/5,
JP8.7/8
PPI1_FS2
(Input)
The signal driven to the
VS signal of the FPDI. The out-
put going to the FPDI can be disabled by a jumper.
JP8.2/4/6,
JP8.7/8
SNAPSHOT_FODD
_SSEL
(Bi)
Audio codec SPI slave select signal; also can connect to
the
SNAPSHOT input of the Kodak interface or the FODD
output of the OmniVision interface.
JP3.21/22
SCK
(Input)
The SPI serial clock used to program the control register
of AD1836A audio codec.
MOSI
(Output)
The SPI serial output data signal used to program the
control register of AD1836A audio codec.
Table 2-1. Signals of Expansion Interface Connectors (Cont’d)
Net/Bus Name
(Direction)
A-V EZ-Extender Function Relevant
Configuration
Jumpers