參數(shù)資料
型號(hào)： MSC8103M1200F
廠商： MOTOROLA INC
元件分類： 數(shù)字信號(hào)處理
英文描述： 64-BIT, 75 MHz, OTHER DSP, PBGA332
封裝： 17 X 17 MM, FLIP-CHIP, PLASTIC, BGA-332
文件頁數(shù)： 87/120頁
文件大小： 1952K
代理商： MSC8103M1200F
2-19
AC Timings
Figure 2-8 and Figure 2-9 show HDI16 read signal timing. Figure 2-10 and Figure 2-11 show HDI16
write signal timing.
Notes:
1.
TC = 1/ DSPCLK. At 300 MHz, TC = 3.3 ns
2.
In the timing diagrams below, the controls pins are drawn as active low. The pin polarity is
programmable.
3.
VCC = 3.3 V ± 0.3 V; TJ = –40°C to +100 °C, CL = 50 pF
4.
The read data strobe is HRD/HRD in the dual data strobe mode and HDS/HDS in the single data
strobe mode.
5.
In 64-bit mode, The “l(fā)ast data register” is the register at address $7, which is the last location to be
read or written in data transfers. This is RX0/TX0 in the little endian mode (HBE = 0), or RX3/TX3 in
the big endian mode (HBE = 1).
6.
This timing is applicable only if a read from the “l(fā)ast data register” is followed by a read from the RXL,
RXM, or RXH registers without first polling RXDF or HREQ bits, or waiting for the assertion of the
HREQ/HREQ signal.
7.
This timing is applicable only if two consecutive reads from one of these registers are executed.
8.
The write data strobe is HWR in the dual data strobe mode and HDS in the single data strobe mode.
9.
The data strobe is host read (HRD/HRD) or host write (HWR/HWR) in the dual data strobe mode and
host data strobe (HDS/HDS) in the single data strobe mode.
10. The host request is HREQ/HREQ in the single host request mode and HRRQ/HRRQ and
HTRQ/HTRQ in the double host request mode. HRRQ/HRRQ is deasserted only when HOTX fifo is
empty, HTRQ/HTRQ is deasserted only if HORX fifo is full (treat as level Host Request).
11.
Compute the value using the expression.
Figure 2-8. Read Timing Diagram, Single Data Strobe
Table 2-19. Host Interface (HDI16) Timing1, 2 (Continued)
Number
Characteristics3
Expression
Value
Unit
HDS
HA[0–3]
HCS[1–2]
HD[0–15]
50
55
44c
44b
44a
53
52
58
57
51
49
61
56
HREQ (single host request)
HRW
57
58
HRRQ (double host request)
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