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8XC196NP, 80C196NU USER’S MANUAL
6-24
PTS Block Transfer Mode Control Block
In block transfer mode, the PTS control block contains a block size (PTSBLOCK), a source and
destination address (PTSSRC and PTSDST), a control register (PTSCON), and a transfer count
(PTSCOUNT).
7 0
Unused
0 0 0 0 0 0 0 0
7 0
PTSBLOCK
PTS Block Size
15 8
PTSDST (HI)
PTS Destination Address (high byte)
7 0
PTSDST (LO)
PTS Destination Address (low byte)
15 8
PTSSRC (HI)
PTS Source Address (high byte)
7 0
PTSSRC (LO)
PTS Source Address (low byte)
7 0
PTSCON
M2 M1 M0 BW SU DU SI DI
7 0
PTSCOUNT
Consecutive Block Transfers
Register Location Function
PTSBLOCK PTSCB + 6 PTS Block Size
Specifies the number of bytes or words in each block. Valid values are
1–32, inclusive.
PTSDST PTSCB + 4 PTS Destination Address
Write the destination memory location to this register. A valid address is
any unreserved memory location within page 00H; however, it must
point to an even address if word transfers are selected.
PTSSRC PTSCB + 2 PTS Source Address
Write the source memory location to this register. A valid address is any
unreserved memory location within page 00H; however, it must point to
an even address if word transfers are selected.
Figure 6-13. PTS Control Block — Block Transfer Mode