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: 141/178页
文件大小: 2247K
代理商: SCD223110QCD
Intelligent Two-Channel LAN and WAN Communications Controller — CD2231
Datasheet
65
5.6.1
Interface to a 32-Bit Data Bus
To interface to a 32-bit data bus, two 16-bit data buffers must be used to isolate the CD2231 A/
D[0–15] pins from either half of the 32-bit bus. The A[1] address pin determines if the lower or
upper half of the data bus is in use for a particular bus cycle. The CD2231 always drives all 16 data
bits during a register-read or DMA-write operation, regardless of the size of the actual transfer.
5.6.2
DMA Connections for the CD2231
NOTES:
1. The 24-bit latch is required.
2. The 16-bit Xcvr is optional depending on application.
3. The 32-bit driver is optional depending on drive needs.
5.6.3
CD2231 as a DTE and DCE Interface
Table 10 shows the recommended DTE (data terminal equipment) connections between the
CD2231 and RS-232C standard interfaces.
Figure 14. DMA Connections for the CD2231
DATEN*
DATDIR*
R/W*
DS*
DTACK*
A/D [0–15]
ADLD*
A[0–7]
AEN*
AS*
16-BIT
DATA
Xcvr
[16–31]
[8–15]
STROBE*
24-BIT
LATCH
32-BIT
ADDRESS
DRIVER
MA[0–31]
en
dir
[8–31]
[0–7]
DATA[0–15]
CD2
2
3
1
. Reference: CCITT 1988 Blue Book.
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