MSC7119 Freescale Semiconductor / Motorola, MSC7119 Datasheet - Page 25

• Manufacturer Part Number: MSC7119
• Description: Low-Cost 16-bit DSP with DDR Controller and 10/100 Mbps Ethernet MAC
• Manufacturer: Freescale Semiconductor / Motorola

2.5.3.2
The MSC7119 has two mechanisms for writing the reset configuration:
Five signal levels (see Chapter 1 for signal description details) are sampled on
operating conditions:
2.5.3.3
Table 16 and Figure 4 describe the reset timing for a reset configuration write.
Freescale Semiconductor
Note:
No.
1
2
•
•
•
•
•
•
From a host through the host interface (HDI16)
From memory through the I
BM[0–1]
SWTE
H8BIT
HDSP
Required external PORESET duration minimum
Delay from PORESET deassertion to HRESET deassertion
Timings are not tested, but are guaranteed by design.
PORESET
PORESET
Output (I/O)
HRESET
Internal
Reset Configuration
Reset Timing Tables
Input
Figure 4. Timing Diagram for a Reset Configuration Write
1
MSC7119 10/100 Mbps Ethernet MAC Data Sheet, Rev. 6
Table 16. Timing for a Reset Configuration Write
2
C interface
Configuration Pins
are sampled
Characteristics
2
PORESET
deassertion to define the boot and
Expression
521/F
Electrical Characteristics
16/F
CLKIN
CLKIN
clocks
clocks
Unit
25