MAC7200 datasheet(757/976 Pages) FREESCALE

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eMIOS External Pins

MAC7200 Microcontroller Family Reference Manual, Rev. 2

Freescale Semiconductor

679

32.5

eMIOS External Pins

32.6

eMIOS Bus Aborts

The eMIOS module supports Peripheral Bus bus aborts, and enforces the following memory map:

Supervisor Access: Unused.

NOTE

The above memory map is for an 8 channel eMIOS only.The address

decoding is based on the number of channels implemented.

32.7

eMIOS Differences betwee MAC71xx and MAC72x2

•

Switched from 16 channels (Channels 0-15) to 8 channels (Channels 0-7)

— Use channels 0-7

— Channel 7 can now drive Counter Bus A

— Flag Out feature uses 3:0 instead of 15:12

•

Fixed MUCts01651: Write on bus abort still writes the register

•

Fixed MUCts01526: New eMIOS mode requested by customer (Block Guide not yet updated, See

eMIOS White Paper v0.7)

a) Latch the A2 and B2 registers into A1 and B1, respectively, on a match on B.

b) Always match on B, regardless of whether a match on A has occurred.

Table 32-1. eMIOS External Pins

Signal

Description

EMIOS0

Unified Channel 0

EMIOS1

Unified Channel 1

EMIOS2

Unified Channel 2

EMIOS3

Unified Channel 3

EMIOS4

Unified Channel 4

EMIOS5

Unified Channel 5

EMIOS6

Unified Channel 6

EMIOS7

Unified Channel 7

Table 32-2. eMIOS Bus Aborts

Abort

Allowed

0x0000–0x000f

0x0010–0x001f

0x0020–0x011f

0x0120–0x3fff

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