参数资料
型号: SCD223110QCD
厂商: INTEL CORP
元件分类: 微控制器/微处理器
英文描述: 2 CHANNEL(S), 256K bps, SERIAL COMM CONTROLLER, PQFP100
封装: METRIC, QFP-100
文件页数: 45/178页
文件大小: 2247K
代理商: SCD223110QCD
Intelligent Two-Channel LAN and WAN Communications Controller — CD2231
Datasheet
139
During an interrupt service routine, the host can use this register to provide a binary timer value to
one of the timers (Sync modes only), as detailed in the Modem End of Interrupt register. The host
can only load one of the two timers in each interrupt service routine.
8.5.4.4
Modem End of Interrupt Register (MEOIR)
Bits 7:6
Reserved – must be ‘0’.
Bit 5
Set General Timer 2 in Synchronous modes
0 = do not set General Timer 2.
1 = load the value, provided in MISR, to General Timer 2.
Bit 4
Set General Timer 1 in Synchronous modes
0 = do not set General Timer 1.
1 = load the value, provided in MISR, to the high byte of General Timer 1.
At the end of an interrupt service routine, the user can set the timer by setting a timer
value in the Modem Interrupt Status register. When the timer reaches ‘0’, the
CD2231 generates a modem/timer group interrupt to the host.
Bits 3:0
Reserved – must be ‘0’.
8.6
DMA Registers
8.6.1
DMA Mode Register (DMR)
This register is write only. No misoperation occurs if the register is read, but the read value is not
consistent.
Bit 7
Internal DTACK synchronization enable. If external synchronization of DTACK*
with BUSCLK is not provided, an internal synchronization can be enabled by setting
this bit (Revision D and later).
Bits 6:4
Reserved – must be ‘0’.
Register Name: MEOIR
Register Description: Modem End of Interrupt
Default Value: x’00
Access: Byte Write only
Intel Hex Address: x’85
Motorola Hex Address: x’86
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
SetTm2
SetTm1
0
Register Name: DMR
Register Description: DMA Mode
Default Value: x’00
Access: Byte Write only
Intel Hex Address: x’F4
Motorola Hex Address: x’F6
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
EnSync
00
0
ByteDMA
000
相关PDF资料
PDF描述
SCDV5540 5X5 DOT MATRIX DISPLAY, RED, 3.2 mm
SCDV5541 5X5 DOT MATRIX DISPLAY, YELLOW, 3.2 mm
SCDV5543 5X5 DOT MATRIX DISPLAY, GREEN, 3.2 mm
SCF5249LAG120 32-BIT, 120 MHz, RISC PROCESSOR, PQFP144
SCF5250CAG120 32-BIT, 120 MHz, MICROPROCESSOR, PQFP144
相关代理商/技术参数
参数描述
SCD224K122A324F 制造商:Cornell Dubilier Electronics 功能描述:FILM CAPACITOR
SCD224K122A3Z25 制造商:Cornell Dubilier Electronics 功能描述:Cap Film 0.22uF 1200V PP 10% (46.99 X 24.6 X 24.1mm) Screw Mount
SCD224K122A3Z25-F 功能描述:薄膜电容器 1200Vdc .22uF 580Vac RoHS:否 制造商:Cornell Dubilier 产品类型: 电介质:Polyester 电容:0.047 uF 容差:10 % 电压额定值:100 V 系列:225P 工作温度范围:- 55 C to + 85 C 端接类型:Radial 引线间隔:9.5 mm
SCD224K162A3-24 制造商:Cornell Dubilier Electronics 功能描述:FILM CAPACITOR
SCD224K162A324F 制造商:Cornell Dubilier Electronics 功能描述:FILM CAPACITOR