EZ80L92MCU Datasheet, PDF (195/241 Pages) Zilog, Inc. – eZ80Acclaim Flash Microcontrollers

eZ80L92 MCU
Product Specification
180
eZ80^® Product ID Revision Register
The eZ80^® Product ID Revision register identifies the current revision of the eZ80L92
product. See Table 102.
Table 102. eZ80^® Product ID Revision Register (ZDI_ID_REV = 02h in the ZDI
Register Read-Only Address Space)
Bit
7
6
5
4
3
2
1
0
Reset
X
X
X
X
X
X
X
X
CPU Access
R
R
R
R
R
R
R
R
Note: X = Undetermined; R = Read-only.
Bit
Position
[7:0]
zdi_id_rev
Value Description
00h– Identifies the current revision of the eZ80L92 product.
FFh
ZDI Status Register
The ZDI Status register provides current information about the eZ80L92 and the eZ80^®
CPU. See Table 103.
Table 103. ZDI Status Register (ZDI_STAT = 03h in the ZDI Register Read-Only
Address Space)
Bit
Reset
CPU Access
Note: R = Read-only.
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
R
R
R
R
R
R
R
R
Bit
Position
7
zdi_active
6
5
halt_SLP
Value Description
0
The CPU is not functioning in ZDI mode.
1
The CPU is currently functioning in ZDI mode.
0
Reserved.
0
eZ80L92 is not currently in HALT or SLEEP mode.
1
eZ80L92 is currently in HALT or SLEEP mode.
PS013012-1004
PRELIMINARY
ZiLOG Debug Interface