Renesas TPS-1 User Manual

TPS-1 User’s Manual: Hardware 5. TPS-1 boot subsystem
R19UH0081ED0107 Rev. 1.07 page 44 of 86
Jul 30, 2018
5.2. Loading and update of the firmware during the manufacturing process
The serial boot Flash can be written in several ways:
• before mounting with a programmer,
• via JTAG interface
Note1
,
• via serial interface (UART)
Note1
,
• via ETHERNET interface (BOOTP/TFTP)
Note2
Note 1 Basically we recommend to use serial interface (UART) during the development phase to fill an empty Flash.
2 via ETHERNET is for firmware update only. If you have TPS-1 toolkit v1.1.0.2 or later, please pre-program empty Flash with “default
image” in the toolkit before the Flash is soldered. It allows to do all required setting via ETHERNET.
5.2.1. UART interface (UART boot)
The UART interface is used for basic communication with the TPS-1. The interface is reduced to a minimum and has no modem lines.
Table 5-1: Boot UART lines
Pin Signal TPS-1 Description
C14 UART6_TX Boot UART “Transmit data”
C13
UART6_RX
Boot UART “Receive data”
P12 BOOT_1 Forced Boot
Value
Function
0x0 BROM: Boot from Boot Flash is enabled (normal operating mode).
0x1
UART: Boot via UART is enabled.
The signal line BOOT_1 (Forced Boot) forces a firmware update. For this update, the UART interface is used. In this case also a corrupt version can be
updated.
The following parameters are set (fix) for the Interface:
• Baudrate: 115200 baud
• 8-bit data length
• 1 stop bit
• no parity check
• no hardware flow control

Renesas TPS-1 Specifications

General

Brand	Renesas
Model	TPS-1
Category	Controller
Language	English