HD64570F Renesas Electronics America, HD64570F Datasheet - Page 85

• Manufacturer Part Number: HD64570F
• Description: IC SCA SRL COMM ADAPTER 88QFP
• Manufacturer: Renesas Electronics America

Specifications of HD64570F

• Applications: ISDN
• Interface: Serial
• Voltage - Supply: 4.5 V ~ 5.5 V
• Package / Case: 88-QFP
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

CLK (CPU modes 1, 2, 3)
CLK (CPU mode 0)
BUSREQ
(CPU modes 1, 2, 3)
HOLD (CPU mode 0)
BUSACK
(CPU modes 1, 2, 3)
HOLDA (CPU mode 0)
BUSY
BEO
BEO
Figure 3.6 Bus Arbitration Sequence Examples (cont)
Figure 3.7 Bus Arbitration System Block Diagram
BUSACK
SCA
Slave mode
Input
BUSREQ
Bus arbiter
BUSY
Higher MPU
V
Example c
CC
T
i
Master mode
Output
DMA cycle
T
bus master
Rev. 0, 07/98, page 69 of 453
1
Another
T
2
T
3
Input
Slave
mode