參數(shù)資料
型號: LSI53C875E
英文描述: LSI53C875E PCI-single channel Ultra SCSI controller
中文描述: LSI53C875E的PCI -單通道SCSI控制器超
文件頁數(shù): 147/166頁
文件大小: 1330K
代理商: LSI53C875E
LSI53C040 Enclosure Services Processor Programming Guide
A-1
Appendix A
LSI53C040 Board Utilities
A.1 Data Transfers
The LSI53C040 board supports serial, ISA, SCSI and 8067 data
transfers. This section discusses these various data transfers.
A.1.1 Serial Port
The LSI53C040 board contains a serial port that is accessible if the
MPIO Bank 3 Bits 0 and 1 are
not
used for other purposes. The
SAF-TE firmware uses the 80C32 Timer 2 as the transmit and receive
clock. It is configured for autoreload mode. The BAUD rate for the serial
port is
BAUD = (Oscillator Frequency)/(# Clicks between Timer 2 rollovers)/32
The on-board oscillator operates at 40 MHz. The settings for the capture
registers RCAP2H and RCAP2L, as well as the resulting error are shown
in
Table A.1
.
Any serial port management system can be used on the monitoring
station. However, note that the data transfer is setup to transmit 8-bits
plus a stop bit and the hardware setting is for XON/XOFF.
Table A.1
Capture Register Settings
BAUD Rate
RCAPH2/RCAP2L
# Clicks
Error (%)
19200 (default)
0xFFBF
65
0.16
9600
0xFF7E
130
0.16
4800
0xFEFC
260
0.16
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