r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 482

Manufacturer Part Number

r8a77850anbg

Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family

Manufacturer

Renesas Electronics Corporation.

Manufacturer

BOSTOCK HK LIMITED

Part Number:

r8a77850anbgV

Manufacturer:

Renesas Electronics America

11. Local Bus State Controller (LBSC)

11.5.14 Mode Pin Settings and General Input Output Port Settings about Data Bus Width

Table 11.18 shows the examples of MODE pin settings and port settings (GPIO port control

Table 11.18 MODE Pin Settings and Port Settings Related to Data Bus Width Selection

L: Low level

H: High level

Note: Concerning "any", setting should be correspondent to the system.

11.5.15 Pins Multiplexed with Other Modules Functions

Some pins used by the LBSC are multiplexed with general input output port (GPIO) and functions

used in other peripheral modules. The pins to be used by the LBSC should start access after setting

these pins to the LBSC functions with GPIO register. For example, when PCMCIA interface is

used, the functions of CE2A and CE2B should be enabled with the GPIO bit in PIMSELR and the

GPIO bit in PLCR before starting access.

11.5.16 Register Settings for Divided-Up DACKn Output

When the access size of DMAC1 transfer related to the local bus space is larger than the data bus

width, multiple bus cycles are generated. When multiple bus cycles are generated and CS is

negated between bus cycles, DACKn output is divided up, in the same way as CS.

Tables 11.19 to 11.22 shows the register settings when DACKn output is not divided up in DMA1

transfer and when it is divided up.

Rev.1.00 Jan. 10, 2008 Page 452 of 1658

REJ09B0261-0100

MODE12 MODE11 PACR

GPIO Port Control Register