Musca
‑
S1 test chip outside the SSE-200 subsystem
• Two 1MB eMRAM memories.
• 2MB Code SRAM: 4 × 512KB independently power
‑
enabled.
• One
Real Time Clock
(RTC) in the Always ON domain.
• One 32-bit general
‑
purpose timer running at 32.768kHz with programmable interrupts.
• 16 external GPIO interrupts.
• 16 GPIO.
• Three
Process, Voltage, and Temperature
(PVT) sensors:
— 501-stage ring oscillators. Software can read data from the sensors in the sensor
peripheral and group registers.
• Three-channel I
2
S:
— Two master transmitters.
— One master receiver.
• Three independent
Pulse Width Modulation
(PWM) outputs.
• Two UARTs, UART0 and UART1. The default connectivity is:
— UART0 to Shield header.
— UART1 to DAPLink. No hardware flow control.
• Two I
2
C, I
2
C0 and I
2
C1, which can be used as master (default), or slave:
• One SPI interface which can be used as master (default), or slave.
• One alternate function I/O multiplexer.
• One QSPI for external flash control with
Execute in Place
(XIP) capability.
• Programmable boot select:
— Internal Code eMRAM.
— External QSPI Flash.
• External powerup reset.
• Three system clock sources:
— External
REFCLK
, 32.768kHz.
— External
FASTCLK
, 32MHz.
— On-chip PLL. Output up to 200MHz.
• One JTAG/SWD debug port.
• One
Serial Configuration Controller
(SCC) with dual access port:
— SCC serial during reset, accessible by DAPLink only while chip is under powerup reset.
— APB after reset, accessible by software, or DAPLink while in debug mode (after reset is
released).
2.2.2
Test chip multiplexed I/O
The Musca
‑
S1 test chip contains interfaces that are multiplexed onto the Musca
‑
S1 test chip I/O. The
IOMUX registers control the GPIO multiplexer that selects the functions that appear at the Musca
‑
S1 test
chip I/O.
The IOMUX registers are part of the
Serial Configuration Control
(SCC) registers that select the ALTF1
or ALTF2 alternative I/O functions.
for information on the Musca
‑
S1 test chip I/O multiplexer
and the IOMUX registers.
Note
The IOMUX registers select each Musca
‑
S1 test chip I/O individually.
2 Hardware description
2.2 Musca-S1 test chip
101835_0000_01_en
Copyright © 2019, 2020 Arm Limited or its affiliates. All rights
reserved.
2-23
Non-Confidential