
GS1582 Data Sheet
40117 - 1 November 2007
13 of 114
G6
SMPTE_BYPASS
Non
Synchronous
Input
CONTROL SIGNAL INPUT
Signal levels are LVCMOS/LVTTL compatible.
Used to enable/disable all forms of encoding/decoding, scrambling and
EDH insertion.
When set LOW, the device will operate in data through mode (DVB_ASI
= LOW), or in DVB-ASI mode (DVB_ASI = HIGH).
No SMPTE scrambling will take place and none of the I/O processing
features of the device will be available when SMPTE_BYPASS is set
LOW.
When set HIGH, the device will perform SMPTE scrambling and I/O
processing.
G7
IOPROC_EN/DIS
Non
Synchronous
Input
CONTROL SIGNAL INPUT
Signal levels are LVCMOS/LVTTL compatible.
Used to enable or disable I/O processing features.
When set HIGH, the following I/O processing features of the device are
enabled:
Audio Embedding
EDH Packet Generation and Insertion (SD-only)
SMPTE 352M Packet Generation and Insertion
ANC Data Checksum Calculation
ANC Data Insertion
Line-based CRC Generation and Insertion (HD-only)
Line Number Generation and Insertion (HD-only)
TRS Generation and Insertion
Illegal Code Remapping
To enable a subset of these features, set IOPROC_EN/DIS = HIGH and
disable the individual feature(s) in the IOPROC_DISABLE register
accessible via the host interface.
When set LOW, the I/O processing features of the device are disabled,
and can not be enabled by changing the settings in the
IOPROC_DISABLE register.
G8
RESET
Non
Synchronous
Input
CONTROL SIGNAL INPUT
Signal levels are LVCMOS/LVTTL compatible.
Used to reset the internal operating conditions to default settings and to
reset the JTAG test sequence.
Normal Mode (JTAG/HOST = LOW)
When set LOW, all functional blocks will be set to default conditions and
all input and output signals become high
impedance including the serial
digital outputs SDO and
SDO.
When set HIGH, normal operation of the device resumes 10usec after
the low to high transition of the RESET signal.
JTAG Test Mode (JTAG/HOST = HIGH)
When set LOW, all functional blocks will be set to default and the JTAG
test sequence will be held in reset.
When set HIGH, normal operation of the JTAG test sequence resumes.
Table 1-1: Pin Descriptions (Continued)
Pin
Number
Name
Timing
Type
Description