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EPSON Research and Development Page 7
Vancouver Design Center
S5U13704/5 - TMPR3912/22U CPU Module
Issue Date: 01/03/07 X00A-G-004-02
1 Introduction
This manual describes the interface between the S1D13704/5 LCD Controller (LCDC) and
the TMPR3912/22U microprocessor as implemented on the Toshiba 3912/22 and
S1D13704/5 CPU Module. This module is used in conjunction with the Toshiba TX RISC
Reference Platform.
For more information regarding the S1D13704 or S1D13705 refer to their respective
Hardware Functional Specification, document number X26A-A-001-xx and
X27A-A-001-xx respectively.
For more information regarding the TMPR3912/22U, refer to the TMPR3912/22U 32-Bit
MIPS RISC Processor User’s Manual. See the Toshiba website under semiconductors at
http://toshiba.com/taec/nonflash/indexproducts.html.
1.1 General Description
The Toshiba TX RISC Reference Kit consists of 6 boards which include: a main board, a
CPU board, a EPROM board, a FMEM board, a debug board, and an analog board. The
main board acts as the motherboard for all the other add-on boards. In addition to these
boards, there is an LCD module that connects to the CPU board. In order to support the
add-on LCD panel that connects to the LCD module, the CPU board microprocessor must
have an internal LCD controller or the CPU board must have an LCD controller on it that
interfaces to the microprocessor.
For the TMPR3912/22U microprocessor, the S1D13704 or S1D13705 LCDC is used to
provide support for LCD panels. The LCDC is socketed so that it can be interchanged
between the S1D13704 and the S1D13705. These controllers are very similar, with the
main differences being the amount of embedded display memory and the lookup-table
architecture (LUT). The S1D13704 has 40K bytes of display memory and the S1D13705
has 80K bytes.
The Toshiba TMPR3912/22U processor supports two PC Card (PCMCIA) slots on the TX
RISC Reference Platform. The S1D13704 or S1D13705 LCD controller uses the PC Card
slot 1 to interface to the TMPR3912/22U, therefore, this slot is unavailable for use on the
TX RISC Reference Platform.