AM79C976 Advanced Micro Devices, AM79C976 Datasheet - Page 15
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AM79C976
Manufacturer Part Number
AM79C976
Description
PCnet-PRO 10/100 Mbps PCI Ethernet Controller
Manufacturer
Advanced Micro Devices
Datasheet
1.AM79C976.pdf
(309 pages)
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CTRL3: Control3 Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Software Styles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
DATAMBIST: Memory Built-in Self-Test Access Register . . . . . . . . . . . . 145
DELAYED_INT: Delayed Interrupts Register . . . . . . . . . . . . . . . . . . . . . . 147
EEPROM_ACC: EEPROM Access Register . . . . . . . . . . . . . . . . . . . . . . 148
Interface Pin Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
FLASH_ADDR: Flash Address Register . . . . . . . . . . . . . . . . . . . . . . . . . 150
FLASH_DATA: Flash Data Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
IFS1: Inter-Frame Spacing Part 1 Register . . . . . . . . . . . . . . . . . . . . . . . 152
INT0: Interrupt0 Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
INTEN0: Interrupt0 Enable Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
IPG: Inter-Packet Gap Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Logical Address Filter Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
LED0 Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
MAX_LAT_A: PCI Maximum Latency Alias Register . . . . . . . . . . . . . . . . 160
MIN_GNT_A: PCI Minimum Grant Alias Register . . . . . . . . . . . . . . . . . . 160
PADR: Physical Address Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
PAUSE_CNT: Pause Count Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
PCIDATA0: PCI DATA Register Zero Alias Register . . . . . . . . . . . . . . . . 161
PHY_ACCESS: PHY Access Register . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
PMAT0: OnNow Pattern Register 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
PMAT1: OnNow Pattern Register 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Receive Protect Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
RCV_RING_LEN: Receive Ring Length Register . . . . . . . . . . . . . . . . . . 165
ROM_CFG: ROM Base Address Configuration Register . . . . . . . . . . . . . 166
SID_A: PCI Subsystem ID Alias Register . . . . . . . . . . . . . . . . . . . . . . . . . 166
SRAM Boundary Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
SRAM Size Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
STAT0: Status0 Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
Software Timer Value Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
SVID: PCI Subsystem Vendor ID Shadow Register . . . . . . . . . . . . . . . . . 170
TEST0: Test Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
VID_A: PCI Vendor ID Alias Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
XMT_RING_LEN: Transmit Ring Length Register . . . . . . . . . . . . . . . . . . 171
XMTPOLLTIME: Transmit Polling Interval Register . . . . . . . . . . . . . . . . . 172
Software Styles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
Receive Watermark Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Transmit Start Point Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Transmit Watermark Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
EEDET Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Interface Pin Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Software Styles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
SRAM_BND Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216
FMDC Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
APDW Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
Initialization Block (SSIZE32 = 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Initialization Block (SSIZE32 = 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
FLOW: Flow Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
BCR Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
P R E L I M I N A R Y
Am79C976
15
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