EZ80F91MCU ZILOG [Zilog, Inc.], EZ80F91MCU Datasheet - Page 324

• Manufacturer Part Number: EZ80F91MCU
• Description: eZ80Acclaim-TM Flash Microcontrollers
• Manufacturer: ZILOG [Zilog, Inc.]

PS019209-0504
Table 195. ZDI Write Memory Register
(ZDI_WR_MEM = 30h in the ZDI Register Write Only Address Space)
eZ80 Product ID Low and High Byte Registers
The eZ80 Product ID Low and High Byte registers combine to provide a means for
an external device to determine the particular eZ80
See Tables 196 and 197.
Table 196. eZ80 Product ID Low Byte Register
(ZDI_ID_L = 00h in the ZDI Register Read Only Address Space,
ZDI_ID_L = 0000h in the I/O Register Address Space)
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
Value Description
00h–
FFh
Value Description
08h
W
P R E L I M I N A R Y
X
R
7
7
0
The 8-bit data that is transferred to the ZDI slave 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.
{ZDI_ID_H, ZDI_ID_L} = {00h, 08h} indicates the
eZ80F91 product.
W
R
6
X
6
0
W
R
X
5
5
0
W
R
X
4
4
0
®
product being addressed.
W
R
X
3
3
1
Product Specification
W
R
X
ZiLOG Debug Interface
2
2
0
eZ80F91 MCU
8 bits of
W
X
R
1
1
0
W
X
R
0
0
0
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