SW00ENB-ZCC Toshiba, SW00ENB-ZCC Datasheet - Page 391

• Manufacturer Part Number: SW00ENB-ZCC
• Description: MCU, MPU & DSP Development Tools CASEWORKS
• Manufacturer: Toshiba

Specifications of SW00ENB-ZCC

• Tool Type: Development Software Support
• Core Architecture: 870
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Controller
TMP1940FDBF
P92 (SCLK0)
P90 (TXD0)
P91 (RXD0)
IVR[9:0]
SC0MOD0.RXE
P76
P92 (SCLK0)
P90 (TXD0)
P91 (RXD0)
IVR[9:0]
SC0MOD0.RXE
P76
3.5.6
TMP1940FDBF
Data Transfer Format
to Table 3.8 illustrate the sequence of two-way communications that should occur in response to each
command.
(1) Load the SC0BUF register with the transmit data, bring P76 high and wait for the SCLK0 signal to
(2) When the TMP1940FDBF has sent out a byte of data and generated a transmit-done interrupt
(3) The controller must perform the next action after a high-to-low transition occurs on P76.
For transmit:
The host controller is to issue one of the commands listed in Table 3.5 to the target board. Table 3.6
Controller
come from the controller.
request, bring P76 low to indicate to the controller that it is not ready to transmit or receive the
next data. When the transmit-done interrupt is cleared and if the next action of the boot program is
again a transmission, load the SC0BUF register with the next data and bring P76 high to inform
the controller that the TMP1940FDBF is now ready to transmit the next data. Then, wait for the
SCLK0 signal to come from the controller. If the next action of the boot program is a reception,
follow the steps described above.
Note: The wait period required until P76 is allowed to go low after the seventh rising edge of SCLK0
Note: The wait period required until P76 is allowed to go low after the seventh rising edge of SCLK0
differs, depending on the operating frequency and the baud rate.
differs, depending on the operating frequency and the baud rate.
Figure 3.10 Handshake Protocol in I/O Interface Mode
Code
10H
20H
30H
40H
0x000
0x000
Table 3.5 Single Boot Mode Commands
RAM Transfer
Show Flash Memory Sum
Show Product Information
Reserved
TMP1940FDBF-33
Command
0x300
0x310
Wait Period
Wait Period
TMP1940FDBF
0x300
0x310