gtlp10b320 Fairchild Semiconductor, gtlp10b320 Datasheet - Page 2

• Manufacturer Part Number: gtlp10b320
• Description: 10-bit Lvttl/gtlp Transceiver With Split Lvttl Port And Feedback Path
• Manufacturer: Fairchild Semiconductor

www.fairchildsemi.com
Pin Descriptions
Functional Description
The GTLP10B320 is a 10-bit Universal driver and receiver
containing D-Type flip-flop, latch, and transparent modes of
operation for the data paths. In addition there is an internal
feedback path that can be used for diagnostic monitoring or
caching schemes. Data flow in each direction is controlled
by the clock signals (LECLKAB and LECLKBC) and output
enables (OEB and OEC). The internal feedback path is
controlled by the SEL pin and allows data transfer from
Port A to Port C without requiring data to be output to the
backplane. The internal feedback path is selected with SEL
LOW and the B Port pin is selected with SEL HIGH. The
data paths can also be configured for latch/transparent or
register mode for each direction with the SAB and SBC
OEB, OEC
V
LECLKAB,
LECLKBC
SEL
SAB, SBC
B
A
C
V
CC
0
0
ERC
0
-B
-A
Pin Names
-C
, GND, V
9
9
9
REF
B Port, C Port Output Enable
respectively (Active LOW)
Device Supplies
A-to-B, B-to-C Latch CLK respectively
(Transparent Active HIGH)
Selects Internal Feedback Path
Selects Register or Latch/Transparent
Path for A-to-B and B-to-C respectively
B Port GTLP I/O
A Port LVTTL Inputs
C Port LVTTL Outputs
Edge Rate Control Pin
(GND
(V
CC
Fast Edge Rate)
Slow Edge Rate)
Description
2
Connection Diagram
pins. Data polarity is non-inverting with the GTLP outputs
enabled via the OEB pin and the LVTTL outputs being
enabled via the OEC pin.
For A-to-B data flow the device is configured into a latch/
transparent or register mode by pin SAB. If SAB is LOW
then the register mode is selected and the device operates
on the LOW-to-HIGH transition of LECLKAB. If SAB is
HIGH then the latch/transparent configuration is selected
and a HIGH-to-LOW transition of LECLKAB stores data in
the latch. If LECLKAB is HIGH the device is in transparent
mode. When OEB is LOW the outputs are active and when
OEB is HIGH the outputs are high impedance.