參數(shù)資料
型號: HIF_SPEC
英文描述: EZ-030 Demonstration Board Theory of Operation Host Interface (HIF) Specification
中文描述: 易- 030演示板的經(jīng)營理論主機接口(誘導(dǎo)因子)規(guī)格
文件頁數(shù): 86/118頁
文件大?。?/td> 356K
代理商: HIF_SPEC
3–62
Host Interface (HIF) Specification
86
Type
Description
Contents
Regs
For lr2=2 (Am29027 version)
Returns:
gr96
027vers
Success:
>0 (encoded version information). The
high-order 8 bits of the accelerator’s
precision register form the arithmetic
accelerator release level (ARL) and are
moved to the low-order 8 bits of gr96
as two 4-bit fields.
Failure: <0 (or unavailable)
For lr2=3 (CPU clock frequency)
Returns:
gr96
clkfreq
Success: >0 (frequency in Hertz)
Failure: =0 (or unavailable)
For lr2=4 (Memory environment)
Returns:
gr96
memenv
Success:
>0 (memory environment)
BYTEW 0x1 byte-write available
DWSE
0x2 DW-bit set
IREAD
0x4 Instruction memory
readable
Failure:
0 (or unavailable)
For all requests
Returns:
gr121
0x80000000
errcode
Logical TRUE, service successful
Error number, service not successful
(implementation dependent)
In addition to the Return Usage table requests, negative
capcode
values in
register
lr2
are available for implementation-dependent encoding of
query
requests. All positive values in register
lr2
are reserved for future expansion of
the HIF
query
service.
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