Epson S1C33210 - Manual (Page 456)

V DMA BLOCK: HSDMA (High-Speed DMA)
B-V-2-4 EPSON S1C33210 FUNCTION PART
Block length
When using block transfer mode (DxMOD = "10"), the data block length (in units of DATSIZEx) should be set
using the BLKLENx[7:0] bits.
BLKLEN0[7:0]: Ch. 0 block length (D[7:0]) / HSDMA Ch. 0 transfer counter register (0x48220)
BLKLEN1[7:0]: Ch. 1 block length (D[7:0]) / HSDMA Ch. 1 transfer counter register (0x48230)
BLKLEN2[7:0]: Ch. 2 block length (D[7:0]) / HSDMA Ch. 2 transfer counter register (0x48240)
BLKLEN3[7:0]: Ch. 3 block length (D[7:0]) / HSDMA Ch. 3 transfer counter register (0x48250)
Note: The block size thus set is decremented according to the transfers performed. If the block size is set
to 0, it is decremented to all Fs by the first transfer performed. This means that you have set the
maximum value that is determined by the number of bits available.
In single transfer and successive transfer modes, these bits are used as the bits7–0 of the transfer counter.
Transfer counter
Block transfer mode
In block transfer mode, up to 16 bits of transfer count can be specified.
TC0_L[7:0]: Ch. 0 transfer counter [7:0] (D[F:8]) / HSDMA Ch. 0 transfer counter register (0x48220)
TC1_L[7:0]: Ch. 1 transfer counter [7:0] (D[F:8]) / HSDMA Ch. 1 transfer counter register (0x48230)
TC2_L[7:0]: Ch. 2 transfer counter [7:0] (D[F:8]) / HSDMA Ch. 2 transfer counter register (0x48240)
TC3_L[7:0]: Ch. 3 transfer counter [7:0] (D[F:8]) / HSDMA Ch. 3 transfer counter register (0x48250)
TC0_H[7:0]: Ch. 0 transfer counter [15:8] (D[7:0]) / HSDMA Ch. 0 control register (0x48222)
TC1_H[7:0]: Ch. 1 transfer counter [15:8] (D[7:0]) / HSDMA Ch. 1 control register (0x48232)
TC2_H[7:0]: Ch. 2 transfer counter [15:8] (D[7:0]) / HSDMA Ch. 2 control register (0x48242)
TC3_H[7:0]: Ch. 3 transfer counter [15:8] (D[7:0]) / HSDMA Ch. 3 control register (0x48252)
Single transfer and successive transfer modes
In single transfer and successive transfer modes, up to 24 bits of transfer count can be specified.
BLKLEN0[7:0]: Ch. 0 transfer counter [7:0] (D[7:0]) / HSDMA Ch.0 transfer counter register (0x48220).
BLKLEN1[7:0]: Ch. 1 transfer counter [7:0] (D[7:0]) / HSDMA Ch.1 transfer counter register (0x48230).
BLKLEN2[7:0]: Ch. 2 transfer counter [7:0] (D[7:0]) / HSDMA Ch.2 transfer counter register (0x48240).
BLKLEN3[7:0]: Ch. 3 transfer counter [7:0] (D[7:0]) / HSDMA Ch.3 transfer counter register (0x48250).
TC0_L[7:0]: Ch. 0 transfer counter [15:8] (D[F:8]) / HSDMA Ch. 0 transfer counter register (0x48220)
TC1_L[7:0]: Ch. 1 transfer counter [15:8] (D[F:8]) / HSDMA Ch. 1 transfer counter register (0x48230)
TC2_L[7:0]: Ch. 2 transfer counter [15:8] (D[F:8]) / HSDMA Ch. 2 transfer counter register (0x48240)
TC3_L[7:0]: Ch. 3 transfer counter [15:8] (D[F:8]) / HSDMA Ch. 3 transfer counter register (0x48250)
TC0_H[7:0]: Ch. 0 transfer counter [23:16] (D[7:0]) / HSDMA Ch. 0 control register (0x48222)
TC1_H[7:0]: Ch. 1 transfer counter [23:16] (D[7:0]) / HSDMA Ch. 1 control register (0x48232)
TC2_H[7:0]: Ch. 2 transfer counter [23:16] (D[7:0]) / HSDMA Ch. 2 control register (0x48242)
TC3_H[7:0]: Ch. 3 transfer counter [23:16] (D[7:0]) / HSDMA Ch. 3 control register (0x48252)
Note: The transfer count thus set is decremented according to the transfers performed. If the transfer
count is set to 0, it is decremented to all Fs by the first transfer performed. This means that you
have set the maximum value that is determined by the number of bits available.
Source and destination addresses
In dual-address mode, a source address and a destination address for DMA transfer can be specified.
S0ADRL[15:0]:
Ch. 0 source address [15:0] (D[F:0]) / Ch. 0 low-order source address set-up register (0x48224)
S1ADRL[15:0]: Ch. 1 source address [15:0] (D[F:0]) / Ch. 1 low-order source address set-up register (0x48234)
S2ADRL[15:0]: Ch. 2 source address [15:0] (D[F:0]) / Ch. 2 low-order source address set-up register (0x48244)
S3ADRL[15:0]: Ch. 3 source address [15:0] (D[F:0]) / Ch. 3 low-order source address set-up register (0x48254)
S0ADRH[11:0]: Ch. 0 source address [27:16] (D[B:0]) / Ch. 0 high-order source address set-up register (0x48226)
S1ADRH[11:0]: Ch. 1 source address [27:16] (D[B:0]) / Ch. 1 high-order source address set-up register (0x48236)
S2ADRH[11:0]: Ch. 2 source address [27:16] (D[B:0]) / Ch. 2 high-order source address set-up register (0x48246)
S3ADRH[11:0]: Ch. 3 source address [27:16] (D[B:0]) / Ch. 3 high-order source address set-up register (0x48256)