MPC8313ECZQADDC Freescale Semiconductor, MPC8313ECZQADDC Datasheet - Page 867

• Manufacturer Part Number: MPC8313ECZQADDC
• Description: Microprocessors - MPU 8313 REV2.2 PB ENC EXT
• Manufacturer: Freescale Semiconductor

Specifications of MPC8313ECZQADDC

• Processor Series: MPC8313E
• Core: e300
• Data Bus Width: 16 bit
• Maximum Clock Frequency: 133 MHz
• Program Memory Size: 16 KB
• Data Ram Size: 16 KB
• Interface Type: I2C
• Mounting Style: SMD/SMT
• Package / Case: PBGA
• Number Of Programmable I/os: 32
• Number Of Timers: 4

The definition of the 8-byte custom preamble sequence is shown in
The fields of the custom preamble sequence are described in
preamble octets matching the standard start of frame delimiter (0xD5) can be expected to trigger premature
frame reception by the receiving station.
15.6.2.5.2
To return the received preamble, the user must ensure that:
The definition of the 8-byte received preamble sequence is shown in
The fields of the received preamble sequence are described in
be shorter than the 7-octet sequence defined by IEEE Std. 802.3, initial bytes of the received preamble
Freescale Semiconductor
Bytes
Byte Offsets
Byte Offsets
0–1
2–3
4–5
6–7
•
•
0–1
2–3
4–5
6–7
0–1
2–3
4–5
6–7
MACCFG2[PreAm RxEN] bit is set
Space for an 8-byte preamble sequence is allowed before the Ethernet DA field in the first receive
data buffer of each frame
8–15
8–15
8–15
8–15
Bits
0–7
0–7
0–7
0–7
MPC8313E PowerQUICC™ II Pro Integrated Processor Family Reference Manual, Rev. 2
User-Visible Preamble Reception
0
PreOct0 Octet #0 of custom transmit preamble. This is the first octet of preamble sent.
PreOct1 Octet #1 of custom transmit preamble. This is the second octet of preamble sent.
PreOct2 Octet #2 of custom transmit preamble. This is the third octet of preamble sent.
PreOct3 Octet #3 of custom transmit preamble. This is the fourth octet of preamble sent.
PreOct4 Octet #4 of custom transmit preamble. This is the fifth octet of preamble sent.
PreOct5 Octet #5 of custom transmit preamble. This is the sixth octet of preamble sent.
PreOct6 Octet #6 of custom transmit preamble. This is the seventh octet of preamble sent. The last octet
0
Name
—
1
1
Figure 15-132. Definition of Received Preamble Sequence
(the start of frame delimiter) is generated by the MAC automatically.
Reserved; should be cleared.
Figure 15-131. Definition of Custom Preamble Sequence
2
Table 15-144. Custom Preamble Field Descriptions
2
PreOct0
PreOct2
PreOct4
PreOct6
3
PreOct0
PreOct2
PreOct4
PreOct6
3
4
4
5
5
6
6
7
7
Description
8
Table
Table
8
9
9
15-145. Should the received preamble
15-144. It should be noted that use of
Figure
Figure
Enhanced Three-Speed Ethernet Controllers
10
10
15-131.
15-132.
11
PreOct1
PreOct3
PreOct5
11
PreOct1
PreOct3
PreOct5
12
12
13
13
14
14
15-149
15
15