NAD D3020 Service Manual page 10

TAS1020APFB
PREAMP BOARD
USB Serial
Interface
USB
Engine
SOF
OSC
PLL
ACG
6 MHz
6016 Byte RAM
UBM
Suspend
/Resume
Logic
8K ROM
1520 Byte
DMA
SRAM
8052 Core
Port–3 Port–1
10
CODEC
C–Port
Interface
Global
Control/Status
Registers
I 2 C
Control
I 2 C Bus