EZ80F91MCU ZILOG [Zilog, Inc.], EZ80F91MCU Datasheet - Page 327
EZ80F91MCU
Manufacturer Part Number
EZ80F91MCU
Description
eZ80Acclaim-TM Flash Microcontrollers
Manufacturer
ZILOG [Zilog, Inc.]
Datasheet
1.EZ80F91MCU.pdf
(396 pages)
- Current page: 327 of 396
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PS019209-0504
ZDI Read Register Low, High, and Upper
The ZDI register Read Only address space offers Low, High, and Upper functions,
which contain the value read by a Read operation from the ZDI Read/Write Con-
trol register (ZDI_RW_CTL). This data is valid only while in ZDI BREAK mode and
only if the instruction is read by a request from the ZDI Read/Write Control regis-
ter. See Table 200.
Table 200. ZDI Read Register Low, High and Upper
(ZDI_RD_L = 10h, ZDI_RD_H = 11h, and ZDI_RD_U = 12h
in the ZDI Register Read Only Address Space)
Bit
Reset
CPU Access
Note: R = Read Only.
Bit
Position
[7:0]
ZDI_RD_L,
ZDI_RD_H,
or
ZDI_RD_U
Value Description
00h–
FFh
P R E L I M I N A R Y
R
7
0
Values read from the memory location as requested by
the ZDI Read Control register during a ZDI Read
operation. The 24-bit value is supplied by {ZDI_RD_U,
ZDI_RD_H, ZDI_RD_L}.
R
6
0
R
5
0
R
4
0
R
3
0
Product Specification
R
ZiLOG Debug Interface
2
0
eZ80F91 MCU
R
1
0
R
0
0
308
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