Register Description; Pcc0 Interface Status Register (Pcc0Isr) - Hitachi HD64465 User Manual

Table 10.1 PC Card Controller Registers [cont'd]
Register Name
PCC1 interface status register
PCC1 general control register
PCC1 card status change register PCC1CSCR
PCC1 card status change
interrupt enable register
PCC1 software control register
10.4

Register Description

10.4.1

PCC0 Interface Status Register (PCC0ISR)

Bit 7
Bit Name
P0READY
/IREQ0
Initial Value -
R/W R
Note -: The initial value is determined by the status of the PC card.
The PCC0 interface status register (PCC0ISR) is an 8-bit READ-only register, which reads the
status of the PC card connected to PCC0. PCC0ISR is subject to the PC card status.
Bit Description
7 PCC0 Ready/IREQ0 Pin Status (P0READY/IREQ0)
If this bit is high: Indicates that the value of pin PCC0RDY is 1 when the PC card
connected to PCC0 is the IC memory card interface. Indicates that the value of pin IREQ
is 1 when the I/O and Memory card interface is the PC card connected to PCC0.
If this bit is low: Indicates that the value of pin PCC0RDY is 0 when the PC card
connected to PCC0 is the IC memory card interface. Indicates that the value of pin IREQ
is 0 when the I/O and Memory card interface is the PC card connected to PCC0.
6 PCC0 Memory Write Protect (P0MWP)
If this bit is high: Indicates that the value of pin PCC0WP is 1 when the Memory card
interface is the PC card connected to PCC0.
If this bit is low: Indicates that the value of pin PCC0WP is 0 when the PC card connected
to PCC0 is the IC memory card interface. The value of bit 6 is always 0 when the I/O and
Memory card interface is the PC card connected to PCC0.
Rev. 3.0, 03/01, page 110 of 390
Symbol
PCC1ISR
PCC1GCR
PCC1 CSCIER
PCC1SCR
6 5 4
P0MWP P0VS2 P0VS1
- - -
R R R
Read/ Initial
Write Value Address
R - H'10002010
R/W H'00 H'10002012
R/W H'00 H'10002014
R/W H'00 H'10002016
R/W H'00 H'10002018
3 2
P0CD2 P0CD1
- -
R R
Register Size
8 bits (16 bits)
8 bits (16 bits)
8 bits (16 bits)
8 bits (16 bits)
8 bits (16 bits)
1 0
P0BVD2
P0BVD1/
/SPKR0
STSCHG0
- -
R R
Default
-
-