ez80f91 ZiLOG Semiconductor, ez80f91 Datasheet - Page 263
ez80f91
Manufacturer Part Number
ez80f91
Description
Ez80 Acclaimplus!? Connectivity Assp Ez80f91 Assp
Manufacturer
ZiLOG Semiconductor
Datasheet
1.EZ80F91.pdf
(387 pages)
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Table 142. ZDI Write Memory Register
Address Space)
Table 143. eZ80 Product ID Low Byte Register
Address Space, ZDI_ID_L = 0000h in the I/O Register Address Space)
PS027001-0707
Bit
Reset
CPU Access
Note: X = Undefined; W = Write.
Bit
Position
[7:0]
zdi_wr_mem
Bit
Reset
CPU Access
Note: R = Read Only.
Bit
Position
[7:0]
zdi_id_l
eZ80
The eZ80 Product ID Low and High Byte registers combine to provide a means for an
external device to determine the particular eZ80 product being addressed. See
and
Table 144
®
Value
00h–FFh The 8-bit data that is transferred to the ZDI slave
Value Description
08h
Product ID Low and High Byte Registers
W
X
R
7
7
0
{ZDI_ID_H, ZDI_ID_L} = {00h, 08h} indicates the eZ80F91
product.
on page 256.
Description
following a Write to this address is written to the address
indicated by the current Program Counter. The Program
Counter is incremented following each 8 bits of data. In
Z80 MEMORY mode, ({MBASE, PC[15:0]})
transferred data. In ADL MEMORY mode, (PC[23:0])
8-bits of transferred data.
W
X
R
6
6
0
W
X
R
5
5
0
(ZDI_WR_MEM = 30h in the ZDI Register Write Only
W
X
R
4
4
0
(ZDI_ID_L = 00h in the ZDI Register Read Only
W
R
X
3
3
1
W
R
X
2
2
0
W
←
R
X
1
1
0
8 bits of
Product Specification
W
R
X
0
0
0
←
Zilog Debug Interface
eZ80F91 ASSP
Table 143
255
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