zl50409 Zarlink Semiconductor, zl50409 Datasheet - Page 19

• Manufacturer Part Number: zl50409
• Description: Managed 9-port 10/100m Ethernet Switch
• Manufacturer: Zarlink Semiconductor

The ZL50409 CPU access support 5 interface options: 8 or 16-bit parallel, serial+MII (port 8), serial only, and
unmanaged serial (with optional EEPROM). The table below summarizes the interface signals required for each
interface, and how they relate back to the Pin Symbol name shown in “Ball Signal Description Table” on page 12.
P_A[0]
P_A[1]
P_A[2]
P_WE#
P_RD#
P_CS#
P_INT#
P_DATA0
P_DATA1
P_DATA2
P_DATA3
P_DATA4
P_DATA5
P_DATA6
P_DATA7
P_DATA8
P_DATA9
P_DATA10
P_DATA11
P_DATA12
P_DATA13
P_DATA14
P_DATA15
Management
Pin Symbol
Interface
P_A[0] (I)
P_A[1] (I)
P_A[2] (I)
P_WE# (I)
P_RD# (I)
P_CS# (I)
P_INT# (O)
P_DATA0 (IOU)
P_DATA1 (IOU)
P_DATA2 (IOU)
P_DATA3 (IOU)
P_DATA4 (IOU)
P_DATA5 (IOU)
P_DATA6 (IOU)
P_DATA7 (IOU)
P_DATA8 (IOU)
P_DATA9 (IOU)
P_DATA10 (IOU)
P_DATA11 (IOU)
P_DATA12 (IOU)
P_DATA13 (IOU)
P_DATA14 (IOU)
P_DATA15 (IOU)
(TSTOUT[3:1]=’000’)
16-bit CPU
Table 3 - Signal Mapping In Different Operation Mode
P_A[0] (I)
P_A[1] (I)
P_A[2] (I)
P_WE# (I)
P_RD# (I)
P_CS# (I)
P_INT# (O)
P_DATA0 (IOU)
P_DATA1 (IOU)
P_DATA2 (IOU)
P_DATA3 (IOU)
P_DATA4 (IOU)
P_DATA5 (IOU)
P_DATA6 (IOU)
P_DATA7 (IOU)
NC (U)
NC (U)
NC (U)
NC (U)
NC (U)
NC (U)
NC (U)
NC (U)
(TSTOUT[3:1]=’001’)
Zarlink Semiconductor Inc.
8-bit CPU
ZL50409
19
NC (U)
NC (U)
NC (U)
STROBE (IU)
DATAOUT (O)
DATAIN (IU)
P_INT# (O)
CPU_MII_TXD0 (O)
CPU_MII_TXD1 (O)
CPU_MII_TXD2 (O)
CPU_MII_TXD3 (O)
CPU_MII_TXCLK (O)
CPU_MII_TXEN (O)
NC (U)
NC (U)
CPU_MII_RXD0 (I)
CPU_MII_RXD1 (I)
CPU_MII_RXD2 (I)
CPU_MII_RXD3 (I)
CPU_MII_RXCLK (O)
CPU_MII_RXDV (I)
NC (U)
NC (U)
(TSTOUT[3:1]=’010’)
Serial with MII
SDA (IOU) (111 only)
SCL (OU) (111 only)
NC (U)
STROBE (IU)
DATAOUT (O)
DATAIN (IU)
P_INT# (O)
NC (U)
NC (U)
NC (U)
NC (U)
NC (U)
NC (U)
NC (U)
NC (U)
NC (U)
NC (U)
NC (U)
NC (U)
NC (U)
NC (U)
NC (U)
NC (U)
(TSTOUT[3:1]=’011’ or ‘111’)
Serial Only
Data Sheet