XRT94L43IB-F Exar Corporation, XRT94L43IB-F Datasheet - Page 291

• Manufacturer Part Number: XRT94L43IB-F
• Description: IC MAPPER SONET/SDH OC12 516BGA
• Manufacturer: Exar Corporation

Specifications of XRT94L43IB-F

• Applications: Network Switches
• Interface: Bus
• Voltage - Supply: 2.5V, 3.3V
• Package / Case: 516-BBGA
• Mounting Type: Surface Mount
• Product: Mapper
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

GENERAL PURPOSE INPUT/OUTPUT
XRT94L43
SONET/SDH OC-12 TO 12XDS3/E3 MAPPER
P
A25
H24
IN
#
GPIO_8
ExtLOS_8
GPIO_9
ExtLOS_9
S
IGNAL
N
AME
I/O
I/O
I/O
S
CMOS
CMOS
T
TTL/
TTL/
IGNAL
YPE
General Purpose Input/Output Pin or External LOS Input Pin:
The function of this input pin depends on whether or not Channel 8 of
the DS3/E3 Framer Block is enabled.
GPIO_8 (DS3/E3 Framer Block - Channel 8 is disabled).
If the DS3/E3 Framer Block is disabled, then this pin will function as a
General Purpose Input/Output pin. This input pin can be configured to
function as either an input or output pin by writing the appropriate value
into Bit 0 (GPIO_DIR_8), within the Operation General Purpose Input/
Output Direction Register - 1 (Indirect Address = 0x00, 0x4A), (Direct
Address = 0x014A).
When configured as an input pin, the state of this pin can be monitored
by reading the state of Bit 0 (GPIO_8) within the Operation General Pur-
pose Input/Output Register - Byte 1 (Indirect Address = 0x00, 046),
(Direct Address = 0x0146).
When configured as an output pin, the state of this pin can be controlled
by writing the appropriate value into Bit 0 (GPIO_8) within the Operation
General Purpose Input/Output Register - Byte 1 (Indirect Address =
0x00, 0x46), (Direct Address = 0x0146).
ExtLOS_8 (DS3/E3 Framer Block - Channel 8 is enabled).
If the DS3/E3 Framer Block is enabled, then this pin will function as the
External LOS Input pin for Channel 8. This input pin is intended to be
connected to an LOS output pin of a DS3/E3 LIU IC.
If this input pin is pulled "High", then the corresponding DS3/E3 Framer
block will automatically declare an LOS condition.
General Purpose Input/Output Pin or External LOS Input Pin:
The function of this input pin depends on whether or not Channel 9 of
the DS3/E3 Framer Block is enabled.
GPIO_9 (DS3/E3 Framer Block - Channel 8 is disabled).
If the DS3/E3 Framer Block is disabled, then this pin will function as a
General Purpose Input/Output pin. This input pin can be configured to
function as either an input or output pin by writing the appropriate value
into Bit 1 (GPIO_DIR_9), within the Operation General Purpose Input/
Output Direction Register - 1 (Indirect Address = 0x00, 0x4A), (Direct
Address = 0x014A).
When configured as an input pin, the state of this pin can be monitored
by reading the state of Bit 1 (GPIO_9) within the Operation General Pur-
pose Input/Output Register - Byte 1 (Indirect Address = 0x00, 046),
(Direct Address = 0x014A).
When configured as an output pin, the state of this pin can be controlled
by writing the appropriate value into Bit 1 (GPIO_9) within the Operation
General Purpose Input/Output Register - Byte 1 (Indirect Address =
0x00, 0x46), (Direct Address = 0x0146).
ExtLOS_9 (DS3/E3 Framer Block - Channel 9 is enabled).
If the DS3/E3 Framer Block is enabled, then this pin will function as the
External LOS Input pin for Channel 9. This input pin is intended to be
connected to an LOS output pin of a DS3/E3 LIU IC.
If this input pin is pulled "High", then the corresponding DS3/E3 Framer
block will automatically declare an LOS condition.
285
D
ESCRIPTION
REV. 1.0.2