AP522 ACROPACK
USER
’S MANUAL
Acromag, Inc. Tel: 248-295-0310
- 25 - http://www.acromag.com
- 25 -
www.acromag.com
A special interrupt is generated with an indication of no pending interrupt.
The XR17V358 will return to sleep mode automatically after all interrupting
conditions have been serviced and cleared. It will stay in the sleep mode of
operation until it is disabled by resetting the SLEEP register bits.
3.2.7 DVID[15:8]
Device identification for the type of UART. The Device ID of the XR17V358 is
0x88.
3.2.8 DREV[7:0]
Revision number of the XR17V358. A 0x01 represents "revision-A" with 0x02
for rev-B and so on.
3.2.9 REGB[23:16] (default 0x00)
REGB register provides a control for simultaneous write to all 8 UARTs
configuration register or individually. This is very useful for device
initialization in the power up and reset routines.
Table 3.7 REGB Register
REGB[23:19]
Not Used.
REGB[18]
Global Interrupt Disable:
0 = Global interrupt enabled. Interrupts to PCIe host
are enabled (default).
1 = Global interrupt disabled. Interrupts to PCIe host
are disabled.
REGB[17]
Wake-up Interrupt Disable:
0 = Wake-up interrupt is generated when UART exits
sleep mode (default).
1 = No wake-up interrupt is generated when UART
exits sleep mode.
REGB[16]
Enable Simultaneous Configuration:
0 = write to each UART configuration registers
individually (default).
1 = Enable simultaneous write to all 4 UART
configuration registers.
3.2.10 MPIO Registers
The MPIO pins of the Exar device are reserved for device identification. As
inputs, MPIO[15:0] on the AP522 module will read 0x0001 through the
MPIOLVL registers.
