ez80190 ZiLOG Semiconductor, ez80190 Datasheet - Page 165
ez80190
Manufacturer Part Number
ez80190
Description
Ez80190 Microprocessor
Manufacturer
ZiLOG Semiconductor
Datasheet
1.EZ80190.pdf
(222 pages)
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PS006613-0306
ZCL
ZDA
ZDI Read Operations
address
lsb of
ZDI
A0
ZDI Block Write
The block WRITE operation is initiated in the same manner as the single-byte
write operation. After the first data byte is transferred, the ZDI master continues to
transmit additional bytes of data to the ZDI slave on the eZ80190 device. After the
receipt of each byte of data the ZDI register address increments by one. If the ZDI
register address reaches the end of the Write Only ZDI register address space
(
block WRITE operations.
ZDI Single-Byte READ
Single-byte read operations are initiated in the same manner as single-byte write
operations, with the exception that the R/W bit of the ZDI register address is set to
1. Upon receipt of a slave address with the R/W bit set to 1, the eZ80190 device’s
ZDI block loads the selected data into the shifter at the beginning of the first cycle
following the 1-bit data separator. The most significant bit (msb) is shifted out first.
Figure 33
7
30h
), the address stops incrementing.
Write
8
separator
illustrates the timing for ZDI single-byte WRITE operations.
1-bit data
1
9
Figure 32. ZDI Block Data Write Timing
byte 1
DATA
msb
D7
of
1
D6
2
PRELIMINARY
ZDI Data Bytes
D1
Figure 32
7
DATA
byte 1
D0
lsb
8
of
eZ80190 Product Specification
1-bit data
separator
illustrates the timing for ZDI
9
1
DATA
byte 2
msb
D7
of
1
ZiLOG Debug Interface
D6
2
151
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