MSC8101ADS Freescale Semiconductor / Motorola, MSC8101ADS Datasheet - Page 59

• Manufacturer Part Number: MSC8101ADS
• Description: MSC8101 APP DEV SYSTEM
• Manufacturer: Freescale Semiconductor / Motorola

Figure 2-12 and Figure 2-13 show HDI16 read signal timing. Figure 2-14 and Figure 2-15 show HDI16 write
signal timing.
Freescale Semiconductor
Notes:
Number
1.
2.
3.
4.
5.
6.
7.
8.
9.
10. The host request is HREQ/HREQ in the single host request mode and HRRQ/HRRQ and HTRQ/HTRQ in the double host
11. Compute the value using the expression.
T
In the timing diagrams below, the controls pins are drawn as active low. The pin polarity is programmable.
V
The read data strobe is HRD/HRD in the dual data strobe mode and HDS/HDS in the single data strobe mode.
In 64-bit mode, The “last 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).
This timing is applicable only if a read from the “last 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.
This timing is applicable only if two consecutive reads from one of these registers are executed.
The write data strobe is HWR in the dual data strobe mode and HDS in the single data strobe mode.
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.
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).
C
CC
= 1/ DSPCLK. At 300 MHz, T
= 3.3 V ± 0.3 V; T
HRRQ (double host request)
HREQ (single host request)
Table 2-19.
Figure 2-12.
J
= –40°C to +100 °C, C
HCS[1–2]
HD[0–15]
HA[0–3]
HRW
HDS
Characteristics
C
= 3.3 ns
MSC8101 Technical Data, Rev. 19
Host Interface (HDI16) Timing
57
Read Timing Diagram, Single Data Strobe
49
L
3
= 50 pF
57
55
50
53
44a
51
58
1, 2
61
44b
(Continued)
52
56
58
Expression
44c
Value
AC Timings
Unit
2-19