xrt94l33 Exar Corporation, xrt94l33 Datasheet - Page 103

• Manufacturer Part Number: xrt94l33
• Description: Multi-channel, Multi-function Device Aggregates 3 Ds3/e3/sts-1 Into Oc3/stm-1
• Manufacturer: Exar Corporation

xr
3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC DATA SHEET
AB26
V23
Y25
GPIO_2
GPIO_3
GPIO_4
I/O
I/O
I/O
TTL/CMOS
TTL/CMOS
TTL/CMOS
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 2
(GPIO_DIR_2), within the “Operation General Purpose
Input/Output Direction Register – 0” (Address Location
0x014B).
If this pin is configured to be an input pin, then the state of this
pin can be monitored by reading the state of Bit 2 (GPIO_2)
within the “Operation General Purpose Input/Output Register –
Byte 0” (Address Location = 0x0147).
If this pin is configured to be an output pin, then the state of
this pin can be controlled by writing the appropriate value into
Bit 2 (GPIO_2) within the “Operation General Purpose
Input/Output Register – Byte 0” (Address Location = 0x0147).
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 3
(GPIO_DIR_3), within the “Operation General Purpose
Input/Output Direction Register – 0” (Address Location
0x014B).
If this pin is configured to be an input pin, then the state of this
pin can be monitored by reading the state of Bit 3 (GPIO_3)
within the “Operation General Purpose Input/Output Register –
Byte 0” (Address Location = 0x0147).
If this pin is configured to be an output pin, then the state of
this pin can be controlled by writing the appropriate value into
Bit 3 (GPIO_3) within the “Operation General Purpose
Input/Output Register – Byte 0” (Address Location = 0x0147).
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 4
(GPIO_DIR_4), within the “Operation General Purpose
Input/Output Direction Register – 0” (Address Location
0x014B).
If this pin is configured to be an input pin, then the state of this
pin can be monitored by reading the state of Bit 4 (GPIO_4)
within the “Operation General Purpose Input/Output Register –
Byte 0” (Address Location = 0x0147).
If this pin is configured to be an output pin, then the state of
this pin can be controlled by writing the appropriate value into
Bit 4 (GPIO_4) within the “Operation General Purpose
Input/Output Register – Byte 0” (Address Location = 0x0147).
103
XRT94L33
Rev.1.2.0.
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