LAN9313 Datasheet, PDF (227/398 Pages) SMSC Corporation – Three Port 10/100 Managed Ethernet Switch with MII

Three Port 10/100 Managed Ethernet Switch with MII
Datasheet
13.1.8.4 General Purpose Timer Configuration Register (GPT_CFG)
Offset:
08Ch
Size:
32 bits
This read/write register configures the LAN9313/LAN9313i General Purpose Timer (GPT). The GPT
can be configured to generate host interrupts at the interval defined in this register. The current value
of the GPT can be monitored via the General Purpose Timer Count Register (GPT_CNT). Refer to
Section 11.1, "General Purpose Timer," on page 141 for additional information.
BITS
DESCRIPTION
31:30 RESERVED
29
28:16
General Purpose Timer Enable (TIMER_EN)
This bit enables the GPT. When set, the GPT enters the run state. When
cleared, the GPT is halted. On the 1 to 0 transition of this bit, the
GPT_LOAD field of this register will be preset to FFFFh.
0: GPT Disabled
1: GPT Enabled
RESERVED
15:0 General Purpose TImer Pre-Load (GPT_LOAD)
This value is pre-loaded into the GPT. This is the starting value of the GPT.
The timer will begin decrementing from this value when enabled.
TYPE
RO
R/W
RO
R/W
DEFAULT
-
0b
-
FFFFh
SMSC LAN9313/LAN9313i
227
DATASHEET
Revision 1.2 (04-08-08)