Sharp LH79524 - Booting from UART; Table 3-6. UART0 Boot Parameters; Table 3-7. Boot Controller Register Summary

LH79524/LH79525 User’s Guide Boot Controller
Version 1.0 3-7
3.1.4 Booting from UART
Another boot option is to boot using UART0. The transfer protocol implementation is
XMODEM with 128-byte packets. All UART0 parameters are summarized in Table 3-6.
The Boot Controller automatically handles initialization and setup of UART0; the source of
the boot code must be compatible with the parameters in the table.
3.2 Register Reference
This section provides the Boot Controller register memory mapping and bit fields.
3.2.1 Memory Map
The base address for the Boot Controller is 0xFFFE6000. Table 3-7 summarizes the Boot
Controller registers.
Table 3-6. UART0 Boot Parameters
PARAMETER VALUE
Protocol XMODEM Checksum
Bit Rate 115 kbps
Data Bits 8
Parity None
Stop Bits 1
Packet Size 128 bytes
Table 3-7. Boot Controller Register Summary
ADDRESS OFFSET NAME DESCRIPTION
0x00 PBC Power-up Boot Configuration Register
0x04 CS1OV nCS1 Override Register
0x08 EPM External Peripheral Mapping Register