Renesas SH7709S Bedienungsanleitung PDF herunterladen (Seite 20)

Rev. 1.0, 07/03, page 16 of 38

Vdd

VddQ

Vss

VssQ

3.3V

GND

Vdd

VddQ

Vss

VssQ

3.3V

GND

A15

SH7709S/SH7729R/SH7706 64-Mbit SDRAM(×16)

64-Mbit SDRAM(×16)

A14

A13

CKIO

CKE

( )

RD/

DQMLU

DQMLL

D15

BA1

BA0

A12

CLK

CKE

DQMU

DQML

DQ15

DQ0

BA1

BA0

A12

CLK

CKE

DQMU

DQML

DQ15

DQ0

( )

Figure2.5 Interface between SDRAM (HM5225165B-B6) and SH7709S/SH7729R/SH7706

2.1.8 HM5225165B-B6 (4 Mwords × 16 bits × 4 banks)

Bus State Controller (BSC) Settings: When two SDRAMs (HM5225165B-B6) are connected to

area 3 of the SH7709S/SH7729R/ SH7706, via a 32-bit bus, the bus state controller (BSC) must be

specified as summarized below. Table 2.6 lists the BSC register settings.

Note that the interface between SDRAM and the SH7709S/SH7729R/SH7706 is performed with

bus clock = 66 MHz, CL = 2, TPC = 2, RCD = 2, TRWL = 1, and TRAS = 4.

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 43 44

SH-3, SH3-DSP SDRAM Interface 1
Cautions 2
Rev. 1.0, 07/03, page 3
Contents 4
Rev. 1.0, 07/03, page 2 of 38 6
Rev. 1.0, 07/03, page 3 of 38 7
Rev. 1.0, 07/03, page 4 of 38 8
Rev. 1.0, 07/03, page 5 of 38 9
Register Name 10
Rev. 1.0, 07/03, page 7 of 38 11
Rev. 1.0, 07/03, page 9 of 38 13

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