ez80f92 ZiLOG Semiconductor, ez80f92 Datasheet - Page 174

• Manufacturer Part Number: ez80f92
• Description: Ez80acclaim Flash Microcontrollers
• Manufacturer: ZiLOG Semiconductor

PS015313-0508
ZDA
ZCL
ZDI Read Operations
ZDI Address
ZDI Block Write
The Block Write operation is initiated in the same manner as the single-byte Write opera-
tion, but instead of terminating the Write operation after the first data byte is transferred,
the ZDI master can continue to transmit additional bytes of data to the ZDI slave on the
eZ80F92 device. After the receipt of each byte of data the ZDI register address increments
by 1. If the ZDI register address reaches the end of the Write Only ZDI register address
space (
Write operations.
lsb of
ZDI Single-Byte Read
Single-byte Read operations are initiated in the same manner as single-byte Write opera-
tions, 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 eZ80F92 device’s ZDI block loads
the selected data into the shifter at the beginning of the first cycle following the single-bit
data separator. The msb is shifted out first.
byte Read operations.
A0
7
30h
Write
8
Byte Separator
), the address stops incrementing.
Single-Bit
0/1
9
Figure 43.ZDI Block Data Write Timing
of DATA
Byte 1
msb
D7
1
D6
2
D5
3
ZDI Data Bytes
D1
7
Figure 44
Figure 43
of DATA
Byte 1
D0
lsb
8
Byte Separator
Single-Bit
displays the timing for ZDI single-
displays the timing for ZDI Block
0/1
9
D7
1
Product Specification
of DATA
Byte 2
eZ80F92/eZ80F93
msb
D6
Zilog Debug Interface
2
1
9
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