參數(shù)資料
型號: PSB7110
廠商: SIEMENS AG
英文描述: Enhanced ISDN Data Access Controller ISAR
中文描述: 增強綜合業(yè)務數(shù)字網(wǎng)的數(shù)據(jù)接入控制器專家組
文件頁數(shù): 126/164頁
文件大?。?/td> 1173K
代理商: PSB7110
_________________________________________________PSB 7110
Siemens Aktiengesellschaft
Page 126
3.10
DSP Program Download
In the ISAR PSB 7110 V1.0 (Development Chip) the DSP program is downloaded through the host
interface into the external memory.
The mechanism is divided into several steps after which the ISAR is set to normal operation mode.
Step 1
ISAR hardware reset
Step 2
Enable host interrupt (MSK-bit in register 75h)
(only if interrupt operation is intended)
Step 3
Verify Chip Version Number
(no program download for ROM Versions)
Step 4
Download of program code
Step 5
Start of DSP Software,
switch from program download to normal operation
3.10.1
Hardware Reset
After a hardware reset the ISAR is started in a download mode, i.e. it is not capable to perform any
functions of the normal operating mode. Therefore none of the mailbox coding for configuration,
status and data exchange is valid. The external access pin EA# must be set to "1", to enable the boot
program in internal ROM for program download.
3.10.2
Host Interrupt Enable
If interrupt operation is intended, the mask bit MSK (bit 2) in register 75h has to be set to "1" (all other
bits set to "0"), to enable the indication of interrupts to the host.
The program download can also be performed by polling since the reaction time of the ISAR is very
short. In this case setting of the MSK bit can be omitted and instead the host has to poll the status bit
STA of register 75h.
相關(guān)PDF資料
PDF描述
PSB7115 Enhanced ISDN Data Access Controller ISAR 34
PSB7115FV2.1 Enhanced ISDN Data Access Controller ISAR 34
PSB7230 Joint Audio Decoder-Encoder for Analog Videophone JADE AN
PSB7238 Joint Audio Decoder-Encoder - Multimode
PSB7280 Joint Audio Decoder-Encoder
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PSB7115 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Enhanced ISDN Data Access Controller ISAR 34
PSB7115FV2.1 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Enhanced ISDN Data Access Controller ISAR 34
PSB71F 制造商:POWERSEM 制造商全稱:POWERSEM 功能描述:Single Phase Rectifier Bridge
PSB71F04 制造商:POWERSEM 制造商全稱:POWERSEM 功能描述:Single Phase Rectifier Bridge with fast Recovery Epitaxial Diode (FRED)
PSB71F06 制造商:POWERSEM 制造商全稱:POWERSEM 功能描述:Single Phase Rectifier Bridge with fast Recovery Epitaxial Diode (FRED)