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參數(shù)資料
| 型號(hào)： | EB402 |
| 英文描述： | EB402 Evaluation Board user＇s guide 7/01 |
| 中文描述： | EB402評(píng)估板用戶(hù)指南7月1日 |
| 文件頁(yè)數(shù)： | 29/84頁(yè) |
| 文件大?。?/td> | 1014K |
| 代理商： | EB402 |
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External Interfaces
3-13
3.3.2 RS-232 Interface
The EB402 has an RS-232 interface to provide a communication link
between the Evaluation Board and a host PC or workstation. The RS-232
interface uses a 9-pin female D-type connector, J10. The interface may
be used for emulation, or as a general-purpose serial interface.
When the host computer runs the debugger included with the SDK
software tools, the RS-232 interface can be used for in-circuit emulation
without any additional hardware.
The TL16C750 UART connects to the LSI402ZX as a memory-mapped
peripheral. The UART is enabled by PCS0N. On the evaluation board,
INT4 is dedicated to the RS-232 interface. The RS-232 interface and its
associated circuitry are shown in Figure 3.4.
Figure 3.4
RS-232 Interface
Address Bus
Data Bus
Control Bus
RCLK
BAUDOUTN
INTRPT
MR
XIN
SIN
SOUT
RTSN
CTSN
R1OUT
T1IN
T3IN
R2OUT
R1IN
T1OUT
T3OUT
R2IN
INT4
RESET
RCLK
7.372 MHz
GND/Vss
SPCTS
SPRTS
SPDCD
SPDSR
SPDTR
SPDO
SPDIN
J10
MAX3233E
RS-232
TL16C750C
UART
PCS0N
RDN
WR0N
GND/Vss
SHDN
ENN
3
2
4
6
1
8
7
5
8
3
ADDR[2:0]
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