EZ80190AZ050SC00TR Zilog, EZ80190AZ050SC00TR Datasheet - Page 169

• Manufacturer Part Number: EZ80190AZ050SC00TR
• Description: IC EZ80 ACCLAIM 50MHZ 100LQFP
• Manufacturer: Zilog

Specifications of EZ80190AZ050SC00TR

• Processor Type: eZ80
• Features: High Speed, Single-Cycle Instruction-Fetch
• Speed: 50MHz
• Voltage: 3.3V
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

PS006614-1208
ZDI Write Data Registers
Table 85. ZDI Write Data Registers (ZDI_WR_U = 13h, ZDI_WR_H = 14h, ZDI_WR_L = 15h)
ZDI Read/Write Control Register
Bit
Reset
CPU Access
Note: X = Undefined; W = Write.
Bit
Position
[7:0]
ZDI_WR_L,
ZDI_WR_H,
or
ZDI_WR_L
Three registers are used in the ZDI Write Only register address space to store the data that
is written when a write instruction is sent to the ZDI Read/Write Control register
(ZDI_RW_CTL). The ZDI Read/Write Control register, listed in
located at ZDI address
Table
ZDI_WR_H, ZDI_WR_L} and the write command in one data transfer operation.
The ZDI Read/Write Control register is used in the ZDI Write Only Register address to
read data from, write data to, and manipulate the CPU’s registers or memory locations.
When this register is written, the eZ80190 device immediately performs the operation cor-
responding to the data value written as listed in
tion is executed via this register, the requested data values are placed in the ZDI Read Data
registers {ZDI_RD_U, ZDI_RD_H, ZDI_RD_L}. When a write operation is executed via
this register, the write data is taken from the ZDI Write Data registers {ZDI_WR_U,
ZDI_WR_H, ZDI_WR_L}. For information regarding the CPU registers refer to
eZ80
®
85. As a result, the ZDI master is allowed to write the data to {ZDI_WR_U,
CPU User Manual (UM0077).
Value Description
00h–
FFh
W
X
7
These registers contain the data that is written during
execution of a write operation defined by the ZDI_RW_CTL
register. The 24-bit data value is stored as {ZDI_WR_U,
ZDI_WR_H, ZDI_WR_L}. If less than 24 bits of data are
required to complete the required operation, the data is
taken from the LSB(s).
16h
W
immediately following the ZDI Write Data registers, in
X
6
W
X
5
W
X
4
Table 86
W
X
3
on page 160. When a read opera-
W
X
2
Product Specification
Table 86
W
X
1
Zilog Debug Interface
on page 160, is
W
X
0
eZ80190
159