xr16v794iv Exar Corporation, xr16v794iv Datasheet - Page 19

• Manufacturer Part Number: xr16v794iv
• Description: High Performance 2.25v To 3.6v Quad Uart With Fractional
• Manufacturer: Exar Corporation

REV. 1.0.0
The device configuration registers are directly accessible from the bus. This provides easy programming of
general operating parameters to the 794 UART and for monitoring the status of various functions. The device
configuration registers are mapped onto address 0x80-8F as shown on the register map in
Figure 12
status, 16-bit general purpose timer control and status, 8X or 16X sampling clock, sleep mode control, soft-
reset control,
3.1
A
F
DDRESS
IGURE
0x00 - 0x0F
0x10 - 0x1F
0x20 - 0x2F
0x30 - 0x3F
0x40 - 0x7F
0x80 - 0x8F
DEVICE CONFIGURATION REGISTER SET
12. T
. These registers provide global controls and status of all 4 channel UARTs that include interrupt
[A7:A0]
simultaneous UART initialization
8-bit Data
Interface
HE
Bus
XR16V794 R
HIGH PERFORMANCE 2.25V TO 3.6V QUAD UART WITH FRACTIONAL BAUD RATE
Device Configuration Registers
UART channel 0 Registers
UART channel 1 Registers
UART channel 2 Registers
UART channel 3 Registers
UART C
HANNEL
EGISTERS
None
T
ABLE
S
PACE
INT0, INT1, INT2,
SLEEP, RESET
INT3, TIMER,
, and device identification and revision.
Channel 2
Channel 3
Channel 0
Channel 1
7: XR16V794 R
(
(
(
(
Table 11
Table 11
Table 11
Table 11
19
R
(
Table 8
EFERENCE
0x00-0F
0x10-1F
0x20-2F
0x30-3F
0x80-8F
0x40-7F
(reserved)
EGISTER
&
&
&
&
)
12
12
12
12
S
)
)
)
)
UART[3:0] Configuration Registers
Device Configuration Registers
ETS
Sleep, Reset, DVID, DREV
First 8 registers are 16550 compatible
Reserved
Interrupt registers and global controls
Exar Enhanced Registers
16550 Compatible and
16-bit Timer/Counter,
4 channel Interrupts,
C
OMMENT
784REGS
XR16V794
Table 8
and