Z8C520 View Datasheet(PDF) - Zilog

Part Name

Description

Manufacturer

Z8C520

1.5 MBPS USB LOW-POWER DEVICE CONTROLLER FOR MULTIPROTOCOL POINTING DEVICES

Zilog 

Zilog

Z8E520/C520

1.5 MBPS USB Device Controller

Z8PLUS SYSTEM REGISTERS

The registers displayed in Figures 21–27 represent Zilog’s

new Z8Plus architecture. For a complete overview of this

new technology, please refer to the Z8Plus user’s manual

(UM97Z8X0300) available at your local Zilog sales office.

1

0FA

IRQ

D7

D6 D5 D4

D3 D2

D1 D0

IRQ0 = TIMER0 TIMEOUT

IRQ1 = TIMER1 TIMEOUT

IRQ2 = TIMER2 TIMEOUT

IRQ3 = HIGH PRIORITY COMM

IRQ4 = LOW PRIORITY COMM

IRQ5 = PORTS

RESERVED (MUST BE 0)

RESERVED (MUST BE 0)

FIXED INTERRUPT PRIORITY: IRQ0 > IRQ1 > IRQ2 > IRQ3 > IRQ4 > IRQ5

Figure 21. Interrupt Request Register

DS97KEY2005

PRELIMINARY

35

Share Link: