GS2962 Datasheet, PDF (14/82 Pages) Gennum Corporation – Integrated Narrow-Bandwidth PLL

Table 1-1: Pin Descriptions (Continued)
Pin
Number
J9
Name
Timing
Type
SDOUT_TDO
Output
J10
SCLK_TCK
Input
K9
CS_TMS
Input
K10
SDIN_TDI
Input
Description
COMMUNICATION SIGNAL OUTPUT.
Signal levels are LVCMOS / LVTTL compatible.
Shared JTAG/HOST pin. Provided for compatibility with the GS1582.
Serial Data Output/Test Data Output.
Host Mode (JTAG/HOST = LOW)
This pin operates as the host interface serial output, used to read
status and configuration information from the internal registers of
the device.
JTAG Test Mode (JTAG/HOST = HIGH)
This pin is used to shift test results and operates as the JTAG test
data output, TDO (for new designs, use the dedicated JTAG port).
NOTE: If the host interface is not being used leave this pin
unconnected.
IO_VDD = 3.3V
Drive Strength = 12mA
IO_VDD = 1.8V
Drive Strength = 4mA
COMMUNICATION SIGNAL INPUT.
Signal levels are LVCMOS / LVTTL compatible.
Shared JTAG/HOST pin. Provided for pin compatibility with GS1582.
Serial data clock signal.
Host Mode (JTAG/HOST = LOW)
SCLK_TCK operates as the host interface burst clock, SCLK.
Command and data read/write words are clocked into the device
synchronously with this clock.
JTAG Test Mode (JTAG/HOST = HIGH)
This pin is the TEST MODE START pin, used to control the operation
of the JTAG test clock, TCK (for new designs, use the dedicated JTAG
port).
NOTE: If the host interface is not being used, tie this pin HIGH.
COMMUNICATION SIGNAL INPUT.
Signal levels are LVCMOS / LVTTL compatible.
Chip select / test mode start.
JTAG Test mode (JTAG/HOST = HIGH)
CS_TMS operates as the JTAG test mode start, TMS, used to control
the operation of the JTAG test, and is active HIGH (for new designs,
use the dedicated JTAG port).
Host mode (JTAG/HOST = LOW), CS_TMS operates as the host
interface Chip Select, CS, and is active LOW.
COMMUNICATION SIGNAL INPUT.
Signal levels are LVCMOS / LVTTL compatible.
Shared JTAG/HOST pin. Provided for pin compatibility with GS1582.
Serial data in/test data in.
In JTAG mode, this pin is used to shift test data into the device (for
new designs, use the dedicated JTAG port).
In host interface mode, this pin is used to write address and
configuration data words into the device.
GS2962 3G/HD/SD-SDI Serializer with Complete
SMPTE Video Support
Data Sheet
48005 - 7
October 2010
14 of 82