ez80l92 ZiLOG Semiconductor, ez80l92 Datasheet - Page 167

• Manufacturer Part Number: ez80l92
• Description: Ez80acclaim Flash Microcontrollers
• Manufacturer: ZiLOG Semiconductor

PS013014-0107
ZDI-Supported Protocol
Table 89
clock.
Table 89. Recommended ZDI Clock versus System Clock Frequency
ZDI supports a bidirectional serial protocol. The protocol defines any device that sends
data as the transmitter and any receiving device as the receiver. The device controlling the
transfer is the master and the device being controlled is the slave. The master always
initiates the data transfers and provides the clock for both receive and transmit operations.
The ZDI block on the eZ80L92 MCU is considered as slave in all data transfers.
Figure 36
connector allows you to connect directly to the ZPAK emulator using a six-pin header.
System Clock
eZ80L92
12–24 MHz
20–50 MHz
Frequency
3–10 MHz
8–16 MHz
MCU
Figure 36. Schematic For Building a Target Board ZPAK Connector
lists the recommended frequencies of the ZDI clock in relation to the system
illustrates the schematic for building a connector on a target board. This
TCK (ZCL)
TDI (ZDA)
10 K‰
Frequency
ZDI Clock
1 MHz
2 MHz
4 MHz
8 MHz
6-Pin Target Connector
10 K‰
2
4
6
Product Specification
1
3
5
ZiLOG Debug Interface
(Target V
eZ80L92 MCU
TV
DD
DD
)
161