Blackfin A-V EZ-Extender Manual
2-5
A-V EZ-Extender Hardware Reference
PPI1_D10
(Bi)
The multifunction net that typically functions as the
D10
pin of
PPI1
but, with a jumper, also can connect to the
PDWN
input of the OmniVision and Kodak camera inter-
faces.
JP3.9/10
,
JP5.3/4
,
JP5.5/6
PPI1_D2
(Bi)
The multifunction net typically functions as the
D2
pin of
PPI1
but also can function as the data signal for the pro-
cessor’s 2-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)
The 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 TWI data pin and configure the internal 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 TWI clock signal and configure the internal 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
PPI0_CLK
, the on-board
27 MHz oscillator, or a socket accepting oscillators 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)
The audio codec’s 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 the AD1836A audio codec.
Table 2-1. Signals of Expansion Interface Connectors (Cont’d)
Net/Bus Name
(Direction)
Blackfin A-V EZ-Extender Function
Relevant
Configuration
Jumpers
