Pioneer PRA-BD11 Service Manual page 76

1
Pin Descriptions
NUMBER SYMBOL
A
27 A/D
28 CS
31 RESET
32 - 35 STD[3:0]
B
36 - 40 FL[4:0]
41, 42 S[1:0]
43 F_R/W
44 INTERRUPT
C
45 FLYWDIS
46 NO_EDH
47 FIFO_RESET
48 PCLKOUT
52-60,49 DOUT[9:0]
61 V
D
62 H
63 - 65 F[2:0]
66 FLAG_MAP
70, 71 SDO/SDO
73 VBLANKS/L
E
74 BYPASS_EDH
75 SDOMODE
76 BLANK_EN
77 ANC_CHKSM
F
76
1
2
TYPE
I Parallel port address/data bus control. When HIGH, the parallel port is used for address input.
When LOW, the parallel port is used for data input or output. In I≤C mode, this pin must be set
LOW.
I Parallel port chip select. When CS is LOW and R/W is HIGH, the GS9020A drives the address/
data bus. When CS is LOW and R/W is LOW, the user should drive the address/data bus.
When CS is HIGH, the address/data bus is in a high impedance st ate (Hi - Z). In I≤C mode, this
pin must be set HIGH.
I Reset. When LOW, the internal control circuitry is reset.
O Video standards indication as descri bed i n section 1.4
I/O EDH flag dat a port to allow acces s to the EDH flags.
I/O Control bits which select whether FF , AP, or ANC EDH flags are active on the EDH flag dat a
port (FL[4:0]). In FLAG_MAP mode, the S[1:0] pins becom e outputs (see device desc ription).
I Flag port read/write control. When HIGH, FL[4:0] are configured as outputs allowing EDH flags
to be read from the device. When LOW, FL[4:0] are configured as inputs allowing EDH flags to
be overwritten in the outgoing EDH packet. In FLAG_MAP mode this pin must be set HIGH.
O Interrupt output. This output goes low when EDH errors occur. This pin is an open drain output
and requires an external pullup resistor. If this output is not used, a pullup resistor is not
required.
I Flywheel disable. When HIGH, the internal flywheel is disabled. When LOW, the internal
flywheel is enabled.
O No EDH present indication. When HIGH, indicates EDH packet s are not present in the
incoming data stream.
O FIFO Reset output. Asserted LOW during the TRSID word for composite standards and the
EAV or SAV word for component standards.
O Parallel clock output.
O Parallel digital video data outputs.
O Vertical sync indication.
O Horizontal sync indication.
O Field indication. F2 is the MSB.
I FLAG_MAP mode enable. When HIGH, FLAG_MAP mode is enabled.
When LOW, FLAG_MAP mode is disabled.
O Differential serial data outputs.
I Vertical blanking interval control. For NTSC signals, when VBLANKS/L is set LOW the 19 line
blanking interval is selected and when set HIGH the 9 line blanking interval is selected. For
PAL D2 signals, when VBLANKS/L is set LOW the 17 line blanking interval is selected and
when set HIGH the 7 line blanking interval is selected. For PAL component signals VBLANKS/L
should be set LOW.
I Bypass EDH control. When HIGH, the device allows the EDH packet to pass through
unaltered.
I Serial data output control. When LOW, the serial data output is re-serialized processed data.
When HIGH, the serial data output is the looped through serial input. After changi ng
SDOMODE, the GS9020A must be reset for proper operat ion.
I Blanking enable. When LOW, incoming data words are set to appropriate blanking levels.
I Ancillary checksum updat ing enabl e. When HIGH, ancillary checksum updat ing is enabled.
PRA-BD11
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DESCRIPTION
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