- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄365965 > TS8882VF20 PDF資料下載
參數(shù)資料
| 型號： | TS8882VF20 |
| 文件頁數(shù)： | 24/42頁 |
| 文件大?。?/td> | 1703K |
| 代理商： | TS8882VF20 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁當前第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁
24
TS68882
2119A
–
12/01
The memory format on the TS 68882 consists of 96 bits (three long words). Only 80 bits are
actually used, the other 16 bits are for future expandability and for long-word alignment of
floating-point data structures. Extended format has a 15-bit exponent, a 64-bit mantissa, and a
1-bit mantissa sign.
Extended precision numbers are intended for use as temporary variables, intermediate val-
ues, or in places where extra precision is needed. For example, a compiler might select
extended precision arithmetic for evaluation of the right side of an equation with mixed sized
data and then convert the answer to the data type on the left side of the equation. It is antici-
pated that extended precision data will not be stored in large arrays, due to the amount of
memory required by each number.
Packed Decimal
String Real Data
Format
The packed decimal string data format allows packed BCD strings to be input to and output
from the TS 68882. The strings consist of a 3-digit base 10 exponent and a 17-digit base 10
mantissa. Both the exponent and mantissa have a separate sign bit. All digits are packed
BCD, such that an entire string fits in 96 bits (three long words). As is the case with all data for-
mats, when packed BCD strings are input to the TS 68882, the strings are automatically
converted to extended precision real values. This allows packed BCD numbers to be used as
inputs to any operation. For example:
FADD.P # - 6.023E + 24, FP5
BCD numbers can be output from the TS 68882 in a format readily used for printing by a pro-
gram generated by a high-level language compiler. For example:
FMOVE.P FP3.BUFFER (# -5)
instructs the TS 68882 to convert the floating-point data register 3 (FP3) contents into a
packed BCD string with five digits to the right of the decimal point (FORTRAN F format).
Data Format
Summary
All data formats described above are supported orthogonally by all arithmetic and transcen-
dental operations, and by all appropriate TS 68000 Family addressing modes. For example,
all of the following are legal instructions:
On-chip calculations are performed to extended precision format, and the eight floating-point
data registers always contain extended precision values. All data used in an operation is con-
verted to extended precision by the TS 68882 before the specific operation is performed, and
all results are in extended precision. This ensures accuracy without sacrificing performance.
Refer to Figure 17 for a summary of the memory formats for the seven data formats supported
by the TS 68882.
FADD.B
# 3.FP0
FADD.W
D2.FP3
FADD.L
BIGINT.FP7
FADD.S
# 3.14159.FP5
FADD.D
(SP) + .FP6
FADD.X
[(TEMP -PTR.A7)].FP3
FADD.P
# 1.23E25.FP0
相關PDF資料 |
PDF描述 |
|---|---|
| TS88915T | TS88915T [Updated 6/02. 19 Pages] Low Skew CMOS PLL Clock Driver. 3 state 70 and 100 MHZ versions |
| TS902AID | Voltage-Feedback Operational Amplifier |
| TS902AIN | Voltage-Feedback Operational Amplifier |
| TS902BID | Voltage-Feedback Operational Amplifier |
| TS902BIN | Voltage-Feedback Operational Amplifier |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TS88915T | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TS88915T [Updated 6/02. 19 Pages] Low Skew CMOS PLL Clock Driver. 3 state 70 and 100 MHZ versions |
| TS88915TMR70 | 功能描述:IC CLK DVR 8OUT PLL 70MHZ 29PGA RoHS:否 類別:集成電路 (IC) >> 時鐘/計時 - 專用 系列:- 標準包裝:1,500 系列:- 類型:時鐘緩沖器/驅動器 PLL:是 主要目的:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 電源電壓:3.3V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應商設備封裝:28-SSOP 包裝:帶卷 (TR) 其它名稱:93786AFT |
| TS88915TMW70 | 功能描述:IC CLK DVR 8OUT PLL 70MHZ 28LCCC RoHS:否 類別:集成電路 (IC) >> 時鐘/計時 - 專用 系列:- 標準包裝:1,500 系列:- 類型:時鐘緩沖器/驅動器 PLL:是 主要目的:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 電源電壓:3.3V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應商設備封裝:28-SSOP 包裝:帶卷 (TR) 其它名稱:93786AFT |
| TS88915TMWB/T55 | 制造商:e2v technologies 功能描述: |
| TS88915TMWB/T70 | 制造商:e2v technologies 功能描述:PLL Clock Driver Single 35MHz to 70MHz 28-Pin LDCC |
發(fā)布緊急采購，3分鐘左右您將得到回復。