MB86391 Datasheet, PDF (45/69 Pages) Fujitsu Component Limited. – MPEG2 1chip Audio/Video Encoder

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3.7 Error Notification Function
The MB86391 has a built−in function to notify outside of an error when it occurs. In case of an error, it sets the
XERROR pin to 'L' to output error information from the bit stream output port. When the error information is
output, the STEN and TSPSSYNC pins are set to 'L' (Fig.3.7). Tables 3.7a and 3.7b list the pins and error
descriptions related to occurrence of errors.
Table 3.7a: Error list
Pin status
XERROR
STDATA
STEN TSPSSYNC
76 54 3 21 0
Error description
1
−− −− − −− −
−
−
No error (normal stream output)
0
0 0 1 Sub−error code
0
0
0 1 0 Sub−error code
0
0
1 0 0 Sub−error code
0
0
Timeout error
0
External illegal access error
0
Program error
Table 3.7b: Sub− error code list
Sub− error code
Description
0 0 0 0 0 Reset status
0 0 0 0 1 Firmware startup
0 00 1 0
to
Reserved
0 11 1 1
1 0 0 0 0 Boot complete
1 0 0 0 1 Boot in progress
1 0 0 1 0 Boot mode error
1 0 0 1 1 Boot header keyword error
1 0 1 0 0 Boot header checksum error
1 0 1 0 1 Data block header keyword error
1 0 1 1 0 Data block header checksum error
1 0 1 1 1 Data block checksum error
1 10 0 0
to
Reserved
1 11 1 1
Note: Being dependent on the firmware, this code is
subject to change and addition.
BCLK(O)
TSPSSYNC(O)
STEN(O)
STDATA(O)
XERROR(O)
ERROR
2cycle(max.)
Fig. 3.7: Error information output timings
MB86391
Product Specification
Rev. 1.1
12, November 2001
41