参数资料
型号: XR16L784CV-F
厂商: Exar Corporation
文件页数: 11/51页
文件大小: 0K
描述: IC UART 8B 3.3V QUAD 64LQFP
标准包装: 160
特点: *
通道数: 4,QUART
FIFO's: 64 字节
规程: RS485
电源电压: 2.97 V ~ 5.5 V
带自动流量控制功能:
带IrDA 编码器/解码器:
带故障启动位检测功能:
带调制解调器控制功能:
安装类型: 表面贴装
封装/外壳: 64-LQFP
供应商设备封装: 64-LQFP(10x10)
包装: 托盘
其它名称: 1016-1281
XR16L784
19
REV. 1.2.3
HIGH PERFORMANCE 2.97V TO 5.5V QUAD UART
3.0
XR16L784 REGISTERS
The XR16L784 quad UART register set consists of the Device Configuration Registers that are accessible
directly from the data bus for programming general operating conditions of the UARTs and monitoring the
status of various functions. These functions include all 4 channel UART’s interrupt control and status, 16-bit
general purpose timer control and status, sleep mode, soft-reset, and device identification and revision. Also,
each UART channel has its own set of internal UART Configuration Registers for its own operation control,
status reporting and data transfer. These registers are mapped into a 256-byte of the data memory address
space. The following paragraphs describe all the registers in detail.
3.1
DEVICE CONFIGURATION REGISTER SET
The device configuration registers are directly accessible from the bus. This provides easy programming of
general operating parameters to the 784 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 Table 8 and
Figure 13. These registers provide global controls and status of all 4 channel UARTs that include interrupt
status, 16-bit general purpose timer control and status, 8X or 16X sampling clock, sleep mode control, soft-
reset control, simultaneous UART initialization, and device identification and revision.
.
FIGURE 13. THE XR16L784 REGISTERS MAPPING
TABLE 7: XR16L784 REGISTER SETS
ADDRESS [A7:A0]
UART CHANNEL SPACE
REFERENCE
COMMENT
0x00 - 0x0F
UART channel 0 Registers
(
First 8 registers are 16550 compatible
0x10 - 0x1F
UART channel 1 Registers
(
0x20 - 0x2F
UART channel 2 Registers
(
0x30 - 0x3F
UART channel 3 Registers
(
0x40 - 0x7F
None
Reserved
0x80 - 0x8F
Device Configuration Regis-
ters
(
Interrupt registers and global controls
INT0, INT1, INT2,
INT3, TIMER,
SLEEP, RESET
8-bit Data
Bus
Interface
Channel 0
Channel 1
Channel 2
Channel 3
Device Configuration Registers
4 channel Interrupts,
16-bit Timer/Counter,
Sleep, Reset, DVID, DREV
UART[3:0] Configuration Registers
16550 Compatible and
Exar Enhanced Registers
784REGS
0x10-1F
0x00-0F
0x20-2F
0x30-3F
0x40-7F
(reserved)
0x80-8F
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