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VSC7440 Datasheet(PDF) 371 Page - Microsemi Corporation

Part # VSC7440
Description  L2/L3 Enterprise Gigabit Ethernet Switch with 10 Gbps Links
PDF  444 Pages
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Manufacturer  MICROSEMI [Microsemi Corporation]
Direct Link  http://www.microsemi.com
Logo MICROSEMI - Microsemi Corporation

VSC7440 Datasheet(HTML) 371 Page - Microsemi Corporation

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VCore-III System and CPU Interfaces
VMDS-10492 VSC7440 Datasheet Revision 4.2
354
4.8.8.2
GPIO Interrupt
The GPIO controller continually monitors all inputs and set bits in the GPIO_INTR register whenever a
GPIO changes its input value. By enabling specific GPIO pins in the GPIO_INTR_ENA register, a change
indication from GPIO_INTR is allowed to propagate (as GPIO interrupt) from the GPIO controller to the
VCore-III Interrupt Controller.
The currently interrupting sources can be read from GPIO_INTR_IDENT, this register is the result of a
binary AND between the GPIO_INTR and GPIO_INTR_ENA registers.
4.8.8.3
Parallel Signal Detect
The GPIO controller has 16 programmable parallel signal detects, SFP0_SD through SFP15_SD. When
parallel signal detect is enabled for a front port index, it overrides the signal-detect/loss-of-signal value
provided by the serial GPIO controller.
To enable parallel signal detect n, first configure which port index from the serial GPIO controller that
must be overwritten by setting GPIO_SD_MAP[n].G_SD_MAP, then enable the SFPn_SD function on
the GPIOs.
The following table lists parallel signal detect pins, which are overlaid on GPIOs. For more information
about overlaid functions on the GPIOs for these signals, see GPIO Overlaid Functions, page 352.
GPIO_31
TWI_SCL_M14_AD
REFCLK0_CONF1
GPIO_32
TWI_SCL_M15_AD
REFCLK0_CONF2
GPIO_33
RCVRD_CLK0
VCORE_CFG0
GPIO_34
RCVRD_CLK1
VCORE_CFG1
GPIO_35
RCVRD_CLK2
VCORE_CFG2
GPIO_36
RCVRD_CLK3
VCORE_CFG3
Table 261 •
Parallel Signal Detect Pins
Register
I/O
Description
SFP0_SD/GPIO
I
Parallel signal detect 0
SFP1_SD/GPIO
I
Parallel signal detect 1
SFP2_SD/GPIO
I
Parallel signal detect 2
SFP3_SD/GPIO
I
Parallel signal detect 3
SFP4_SD/GPIO
I
Parallel signal detect 4
SFP5_SD/GPIO
I
Parallel signal detect 5
SFP6_SD/GPIO
I
Parallel signal detect 6
SFP7_SD/GPIO
I
Parallel signal detect 7
SFP8_SD/GPIO
I
Parallel signal detect 8
SFP9_SD/GPIO
I
Parallel signal detect 9
SFP10_SD/GPIO
I
Parallel signal detect 10
SFP11_SD/GPIO
I
Parallel signal detect 11
SFP12_SD/GPIO
I
Parallel signal detect 12
SFP13_SD/GPIO
I
Parallel signal detect 13
SFP14_SD/GPIO
I
Parallel signal detect 14
Table 260 •
GPIO Overlaid Functions (continued)
Name
Overlaid Function 1 Overlaid Function 2 Overlaid Function 3
Configuration or
Interface



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