Specifications

ESS Technology, Inc. SAM0023-122898 39
ES1869 DATA SHEET
I/O PORTS
Port Descriptions
Configuration Device
EEPROM Command Register (Config_Base+3h, R/W)
Bit Definitions:
Status Register (Config_Base+5h, R/W)
Bit Definitions:
Interrupt Status Register (Config_Base+6h, R)
Read this register to find out which ES1869 interrupt
sources are active.
Bit Definitions:
Interrupt Mask Register (Config_Base+7h, R/W)
The mask bits of this register can be used to force the
interrupt source to be zero without putting the interrupt pin
in a high-impedance state. Each bit is AND’ed with the
corresponding interrupt source. Set to all ones by
hardware reset.
Bit Definitions:
EEPROM Command
7 6 5 4 3 2 1 0
Bits Name Description
3:0 EEPROM
Command
EEPROM command options.
Reserved EEPROM type State PNPOK Rst seq busy
7 6 5 4 3 2 1 0
Bits Name Description
7:6 Reserved Reserved.
5:4 EEPROM
type
EEPROM type indicator.
3:2 State ES1869 operating state.
1 PNPOK PNPOK bit.
0 Rst seq
busy
Reset sequence busy bit.
Bit 3 Bit 2 Bit 1 Bit 0 Function
0 0 0 0 Write disable
0 0 0 1 Write all
0 0 1 0 Erase all
0 0 1 1 Write enable
0 1 0 0 Write
1 0 0 0 Read
1 1 0 0 Erase
Bit 5 Bit 4 Function
0 0 Internal ROM
0 1 Reserved
1 0 Reserved
1 1 512 x 8-bit
Bit 3 Bit 2 Function
0 0 Wait-for-key
0 1 Sleep
1 0 Isolation
1 1 Configure
Reserved GP Modem CD-ROM MPU-401 H/W vol Audio 2 Audio 1
7 6 5 4 3 2 1 0
Bits Name Description
7 Reserved Reserved.
6 GP General-Purpose. GPI input pin.
5 Modem Modem. MMIRQ input pin AND’ed with inverse
of MMIEB input.
4 CD-ROM CD-ROM interface. CDIRQ input pin.
3 MPU-401 MPU-401. MPU-401 receive interrupt request
AND’ed with bit 6 of mixer register 64h.
2 H/W vol Hardware volume. Hardware volume interrupt
request AND’ed with bit 1 of mixer register 64h.
1 Audio 2 Audio 2. Audio 2 interrupt request AND’ed with
bit 6 of mixer register 7Ah.
0 Audio 1 Audio 1. Audio 1 interrupt request.
Reserved GP Modem CD-ROM MPU-401 H/W vol Audio 2 Audio 1
7 6 5 4 3 2 1 0
Bits Name Description
7 Reserved Reserved.
6 GP General-Purpose interrupt mask bit.
5 Modem Modem interrupt mask bit.
4 CD-ROM CD-ROM interface interrupt mask bit.
3 MPU-401 MPU-401 interrupt mask bit.
2 H/W vol Hardware volume interrupt mask bit.
1 Audio 2 Audio 2 interrupt mask bit.
0 Audio 1 Audio 1 interrupt mask bit.