MPC8536E-ANDROID Freescale Semiconductor, MPC8536E-ANDROID Datasheet - Page 947

• Manufacturer Part Number: MPC8536E-ANDROID
• Description: HARDWARE/SOFTWARE ANDROID OS
• Manufacturer: Freescale Semiconductor
• Series: PowerQUICC ™r
• Type: MPUr

Specifications of MPC8536E-ANDROID

• Contents: Board
• For Use With/related Products: MPC8536
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

14.6.7.5.2
When an error is encountered after a PTP packet has begun to be processed, the time-stamp written to the
TxPAL is zero. Subsequent frames may be flushed by eTSEC. There will be no time-stamp update to
TxPAL for the subsequent flushed frames.
14.6.7.6
Software instructs the Tx packet to be timestamped via setting bit 15 in the TxFCB to mark a PTP packet.
TxFCB[VLCTL] can be translated as the Tx PTP packet identification number. BD[TOE] must be set to
enable transmit PTP packet time stamping. TxFCB[PTP] bit takes precedence over TxFCB[VLN] bit. It
disables per packet VLAN tag insertion. On a PTP packet, a VLAN tag can be inserted from the DFVLAN
register. The TxFCB for the PTP packet is shown in
The contents of the Tx FCB are defined in
Freescale Semiconductor
Bytes
0–1
Offset + 0
Offset + 2
Offset + 4
Offset + 6
Bits
0
1
2
3
4
Tx PTP Packet Parsing
Error Condition
VLN
0
MPC8536E PowerQUICC III Integrated Processor Reference Manual, Rev. 1
Name
UDP
VLN
TUP
IP6
IP
IP
1
IP6
Table 14-168. Tx Frame Control Block Description
2
VLAN control word valid. This bit is ignored when the PTP bit is set. VLAN tag is read from
the DFVLAN register if PTP=1.
0 Ignore VLCTL field.
1 If VLAN tag insertion is enabled for eTSEC, use the VLCTL field as the VLAN control
Layer 3 header is an IP header.
0 Ignore layer 3 and higher headers.
1 Assume that the layer 3 header is an IPv4 or IPv6 header, and take L3OS field as valid.
IP header is IP version 6. Valid only if IP = 1.
0 IP header version is 4.
1 IP header version is 6.
Layer 4 header is a TCP or UDP header.
0 Do not process any layer 4 header.
1 Assume that the layer 4 header is either TCP or UDP (see UDP bit), and offload
UDP protocol at layer 4.
0 Layer 4 protocol is either TCP (if TUP = 1) or undefined.
1 Layer 4 protocol is UDP if TUP = 1.
Figure 14-153. Transmit Frame Control Block
word.
checksumming on the basis that the IP header has no extension headers.
TUP UDP CIP CTU NPH
3
L4OS
4
Table
5
14-168.
6
VLCTL/PTP_ID
Figure
7
PHCS
14-153.
8
Description
9
Enhanced Three-Speed Ethernet Controllers
10
11
L3OS
12
13
14
PTP
15
14-199